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Department of Mathematics

i1 Special Announcement:

Linear Algebra and its Applications is pleased to announce a special issue on the occasion of the 21st Conference of the International Linear Algebra Society (ILAS) at Iowa State University, Ames, Iowa, USA, July 24-28, 2017: https://ilas2017.math.iastate.edu/.

Papers corresponding to talks given at the conference should be submitted by December 15, 2017 via the Elsevier Editorial System (EES): http://ees.elsevier.com/laa choosing the special issue SI:ILAS2017 Conference.

In submitting a paper, Volker Mehrmann should be chosen as the responsible editor-in-chief. Special editors for this ILAS2017 issue are:

•Stefan Güttel, •Leslie Hogben, •Miklós Pálfia, and •Tatjana Stykel.

Authors may suggest one of these special editors to handle their submission.

Papers will be refereed according to the usual standards of LAA.

i2 Table of Contents

Section 1: General Information

Table of Contents...... i3

ILAS 2017 Local Shuttle Schedule...... i4

Shuttle and CyRide Information...... i5

Conference Information...... i6

Information on ILAS activities...... i9

Conference Schedule...... i10

Section 2: Scientific Information

Plenary Lectures...... 1

Mini-Symposia Summary...... 5

Mini-Symposia with Speakers...... 7

Contributed Talks...... 17

Poster Session...... 18

Index...... 19

Section 3: Maps

i3 ILAS HOTEL/CAMPUS SHUTTLE SCHEDULE DROP OFF/PICK UP LOCATIONS: HOOVER HALL West side on Bissell Road MEMORIAL UNION South side entrance QUALITY INN South lobby entrance LIVING HISTORY FARMS EXCURSION Attendees staying on campus need to catch the shuttle at the All times indicated are for departures; please plan on arriving Memorial Union. Those staying at hotels other than the Iowa at shuttle locations 10 minutes early to ensure your ride. House or Quality Inn are responsible for getting to the shuttle stop at either the Memorial Union or Quality Inn.

MONDAY, JULY 24TH TUESDAY, JULY 25TH WEDNESDAY, JULY 26TH THURSDAY, JULY 27TH FRIDAY, JULY 28TH

7:00 AM Quality Inn 7:00 AM Quality Inn 7:30 AM Memorial Union 7:00 AM Quality Inn 7:30 AM Quality Inn 7:15 AM Hoover 7:15 AM Hoover 7:15 AM Hoover 7:45 AM Memorial Union 7:30 AM Quality Inn 7:30 AM Quality Inn 7:45 AM Iowa House 7:30 AM Quality Inn 8:00 AM Quality Inn 7:45 AM Quality Inn 7:45 AM Hoover 7:45 AM Hoover 7:45 AM Hoover 8:15 AM Memorial Union 8:00 AM Quality Inn 8:00 AM Quality Inn 8:30 AM Quality Inn 8:00 AM Quality Inn 11:45 AM Living History 8:15 AM Hoover 8:15 AM Hoover 8:45 AM Memorial Union 8:15 AM Hoover Farms 8:30 AM Quality Inn 8:30 AM Quality Inn 8:30 AM Quality Inn 9:00 AM Quality Inn 8:45 AM Hoover 8:45 AM Hoover 8:45 AM Hoover 9:15 AM Memorial Union 9:00 AM Quality Inn 9:00 AM Quality Inn 10:00 AM Quality Inn 9:00 AM Quality Inn 9:30 AM Quality Inn 9:15 AM Hoover 9:15 AM Hoover 10:15 AM Memorial Union 9:15 AM Hoover 9:45 AM Memorial Union 9:30 AM Quality Inn 9:30 AM Quality Inn 10:30 AM Quality Inn 9:30 AM Quality Inn 10:00 AM Quality Inn 9:45 AM Hoover 9:45 AM Hoover 10:45 AM Memorial Union 9:45 AM Hoover 10:15 AM Memorial Union 11:00 AM Quality Inn 10:30 AM Quality Inn 11:15 AM Memorial Union 11:30 AM Quality Inn 11:45 AM Memorial Union 12:00 PM Quality Inn 12:15 PM Memorial Union 12:30 PM Quality Inn 12:45 PM Memorial Union

6:00 PM Memorial Union 5:30 PM Memorial Union 4:30 PM Memorial Union 6:00 PM Memorial Union 11:30 AM Hoover 6:15 PM Quality Inn 5:45 PM Quality Inn 4:45 PM Quality Inn 6:15 PM Quality Inn 11:45 AM Quality Inn 6:30 PM Memorial Union 6:00 PM Memorial Union 5:00 PM Memorial Union 6:30 PM Memorial Union 12:00 PM Hoover 6:45 PM Quality Inn 6:15 PM Quality Inn 5:15 PM Quality Inn 6:45 PM Quality Inn 12:15 PM Quality Inn 7:00 PM Memorial Union 6:30 PM Memorial Union 5:30 PM Memorial Union 7:00 PM Memorial Union 12:30 PM Hoover 7:15 PM Quality Inn 6:45 PM Quality Inn 5:45 PM Quality Inn 7:15 PM Quality Inn 12:45 PM Quality Inn 7:30 PM Memorial Union 7:00 PM Memorial Union 6:00 PM Memorial Union 7:30 PM Memorial Union 1:00 PM Hoover 7:45 PM Quality Inn 7:15 PM Quality Inn 6:15 PM Quality Inn 7:45 PM Quality Inn 1:15 PM Quality Inn 8:00 PM Memorial Union 7:30 PM Memorial Union 6:30 PM Memorial Union 8:00 PM Memorial Union 8:15 PM Quality Inn 7:45 PM Quality Inn 6:45 PM Quality Inn 8:15 PM Quality Inn 8:30 PM Memorial Union 8:00 PM Memorial Union 7:00 PM Memorial Union 8:30 PM Memorial Union 8:45 PM Quality Inn 8:15 PM Quality Inn 7:15 PM Quality Inn 8:45 PM Quality Inn By Calling: Call 515-509-2609 ILAS Local Shuttle When prompted, enter your bus stop number The ILAS Local Shuttle is provided for you free of charge for commuting between Quality Inn and Suites, By Computer or web-enabled cell phone: (2601 East 13th Street) and campus. Times and loca- Visit www.cyride.com and click on the Next Bus but- tions are listed to the left. ton or visit www.cyride.com/nextbus. Select your designated route. Select your direction of travel (if applicable). Select your bus stop.

CyRide For smartphones, a QR barcode located on the lower CyRide is the city bus system for Ames, Iowa. It is right corner of the bus stop can be scanned using any available for transportation around campus as well as free QR mobile scanning application. to key areas in Ames such as downtown, the mall, and some hotels. Fares The Orange Route, which circles campus and goes to Routes the commuter lot, is free. For all other routes, regular Detailed information for individual routes including fare is $1.25, reduced fare is $0.60 for K-12 students, maps and schedules can be found medicaid/medicare cardholders; 65 or older, persons online at with a disability. Coins and bills accepted. Drivers do www.cyride.com or through the not carry change. Iowa State App, MyState, down- loadable at: Ticket books can be purchased for 10 rides on Fixed https://mystate.iastate.edu/ Routes ­— Regular Fare $12 or Reduced Fare for those eligible for $6. Passes are available for sale at the fol- Most bus routes will have a bus stop every 10-30 min- lowing locations: utes during daytime hours, exact times can be found online. All published trips are wheelchair accessible. CyRide Office All buses have a bike rack. 601 N. University Blvd

Next Bus City Hall CyRide provides bus prediction service via a system 515 Clark Ave called NEXT BUS where a telephone, mobile device or web-enabled computer can be used to view exactly University Book Store where a bus is located and its predicted time of arrival. ISU Memorial Union 2229 Lincoln Way By Text Message: Text “cyride [bus stop #]” to 41411 HyVee (West Ames) Example: “cyride 1165” 3800 Lincoln Way Follow the texted instructions HyVee (Lincoln Center) For first time users, NEXT BUS will prompt you with a 640 Lincoln Way welcome message. HyVee Drugstore Bus Stop numbers can be obtained from CyRide’s list 500 Main St of stop numbers or by looking for the stop number on the bus stop signs.

i5 Conference Information

Registration:

You will find people who can help you with registration and general information regarding the ILAS conference at the following places and times:

Date Time Services Location Monday, July 24 7:30 - 9:00 Registration and Information Hoover atrium, outside 2055 10:00 - 17:00 Registration and Information 205 Carver Tuesday, July 25 7:30 - 17:00 Registration and Information 205 Carver Wednesday, July 26 12 noon - 17:00 Registration and Information 205 Carver Thursday, July 27 8:00 - 17:00 Information 396 Carver Friday, July 28 8:00 - 13:00 Information 396 Carver

Coffee will be available at Monday’s registration outside 2055 Hoover. Wireless Access on Campus:

Eduroam is available at ISU to those whose institu- tions subscribe.

Guest access privileges last for seven days.

Connect to the ISUguest network. Open a web browser and enter netreg.iastate.edu if the ISU NetReg page does not appear automatically.

Select (click) the Next button in the “Guests” box (on the right).

Enter your information and click “Next”.

Read the terms and check “I Agree”.

When instructed, close your browser and reboot your computer to complete the registration process.

When you re-open your browser you will be con- nected to the ISU Network.

If you have problems or questions, contact a person in a red conference t-shirt or call the Solution Center at 515-294-4000.

i6 Coffee Breaks and Monday Lunch Boxes:

Coffee breaks will be held at the times designated on the schedule. You will find refreshments at break stations in 205 Carver and the Lobby of Carver Hall (1st floor north side of building).

Monday, pre-purchased box lunches can be picked up in the Carver Hall Lobby.

ISU Department of Mathematics Office:

396 Carver Hall Phone: 515-294-1752 Hours: 8:00 - 16:30

Copying and Printing:

ISU Printing and Copy Services (accepts CASH only ­— ATM machines nearby) ISU Memorial Union 0303 Memorial Union 515-294-0008 7:30 - 16:00 Monday-Friday ISU Union Drive Community Center 132 UDCC 515-294-1319 7:30 - 16:00 Monday-Friday

Copyworks (in Campustown) 105 Welch Ave Ames, IA 50014 515-292-3630 Open 24 hours a day from Sunday 7:00, to Friday 22:00 Open Saturdays 7:00 - 22:00

ATMs:

ATMs can be found at the following places on ISU Campus:

Memorial Union West Memorial Union Food Court Memorial Union - University Book Store Parks Library The Hub Union Drive Community Center Commons

Or in Campustown (south of campus):

Wells Fargo Bank US Bank

You might also ask at your hotel for ATM locations nearby. i7 ILAS Website Iowa State App

More information can be found on For ISU information, including cam- the ILAS website: pus maps and cyride routes, check https://ilas2017.math.iastate.edu/ out the MyState App: https://mystate.iastate.edu/ The website will contain updates that occur after program printing.

Reception and Poster Session Information:

The Iowa State University Department of Mathematics is pleased to invite ILAS attendees to an Opening Recep- tion on Monday evening, July 24th at 18:30. The event will be held at the Memorial Union in the Sun Room. The ILAS 2017 Poster Session will be held at the same time and in the same location. We will celebrate the 30th birthday of ILAS and recognize longtime ILAS volunteers Jim and Judy Weaver. Please join us! Refreshments will be provided.

ILAS Business Meeting:

ILAS will hold its Annual Meeting of Members at ILAS 2017 (ILAS Business Meeting) on Wednesday, July 26, 16:45 - 18:15, in Carver 305. All ILAS members are encouraged to attend.

Banquet Information:

The ILAS Banquet will be held in the Memorial Union on Thursday, July 27, 17:45pm. Rajendra Bhatia will be recognized with the Hans Schneider Prize.

Tickets must have been purchased by July 6.

Excursion Information:

The conference excursion will visit Living History Farms on Wednesday, July 26. $50 Fee includes bus transportation to Des Moines, admission ticket, and boxed lunch. Tickets must have been purchased by July 6. Space is limited.

Living History Farms Living History Farms in Urbandale, Iowa, tells the amazing story of how Iowans transformed the fertile prairies of the Midwest into the most productive farmland in the world. At the 500-acre open-air museum, visitors trav- el at their own pace through historical time periods spanning 300 years. On-site interpreters provide a unique learning environment of seasonal activities and demonstrations.

Visitors engage at three working farm sites: 1700 Ioway Indian Farm; 1850 Pioneer Farm; and 1900 Horse-Powered Farm as well as the 1875 Town of Walnut Hill including a blacksmith shop, general store, print show, mansion, and barn.

i8 ILAS 2019: Linear Algebra Without Borders

22nd Conference of the International Linear Algebra Society - ILAS 2019

July, 8-12, 2019

Host: Department of Mathematics at Fundação Getúlio Vargas

Rio de Janeiro, Brazil.

The theme primarily refers to the fact that Linear Algebra and its myriad of applications are interwoven in a borderless unit. In the conference, we plan to illustrate this by creating a program whose plenary talks and symposia represent the many scientific “countries” of Linear Algebra, and which invites participant to “visit” them. This theme also refers to the openness and inclusiveness of Linear Algebra to researchers of different backgrounds.

More information at: http://ilas2019.org/

ELA

The Electronic Journal of Linear Algebra

The Electronic Journal of Linear Algebra (ELA) is a refereed all-electronic publication of the International Linear Algebra Society. ELA welcomes mathematical articles of high standards that contribute new information and new insights to matrix analysis and the various aspects of linear algebra and its applications. For full and free access to articles, as well as submission information visit http://repository.uwyo.edu/ela

i9 ILAS 2017: Connections Schedule Time Monday, July 24 Tuesday, July 25 Wednesday, July 26 Thursday, July 27 Friday, July 28 Time 7:30 Registration (45 mins) 7:30 Hoover Atrium

7:45 Excursion-Living History Farms 7:45 Buses Load 7:45am

8:00 Plenary 4 (50 mins) Buses Depart 8:00am Plenary 7 (50 mins) 8:00 Hoover 2055 Hoover 2055

8:15 Opening Remarks Tamara G. Kolda Collaboration time Rajendra Bhatia 8:15 Hoover 2055 Sandia National Laboratories for non-Excursion Indian Statistical Institute participants Hans Schneider Prize Speaker 8:30 Plenary 1 (50 mins) Tensor Decomposition: A Parallel Sessions 11 8:30 Hoover 2055 Mathematical Tool for Data Another metric, another mean (120 mins - 4 talks) Analysis and Compression Carver Hall (room numbers below) Vern Paulsen 8:50 University of Waterloo Plenary 5 (50 mins) Plenary 8 (50 mins) 9 parallel sessions: 8:50 Hoover 2055 Hoover 2055 (101) Combinatorial Matrix Quantum Chromatic Numbers Buses Arrive LHF Theory Miklós Pálfia Rachel Ward (268) Compressed Sensing Sungkyunkwan University University of Texas (290) Geometry Taussky-Todd Lecturer (232) Nonnegative Inverse 9:20 Plenary 2 (50 mins) On the recent advances in the Learning dynamical systems Eigenvalue 9:20 Hoover 2055 multivariable theory of from highly corrupted (305) Quantum Information monotone functions and measurements Science Helena Šmigoc means (274) Representation Theory 9:40 University College Dublin Coffee Break (30 mins) Group Photo (204) Spectral Graph Theory 9:40 LAMA Lecturer Carver Lobby and Carver 205 Hoover 2055 (294) Tensors and Manifolds (282) Toeplitz Matrices and RH From positive matrices to Coffee Break (30 mins) 10:00 negative polynomial Carver Lobby and Carver 205 10:00 coefficients 10:10 Coffee Break (30 mins) Parallel Sessions 4 Parallel Sessions 9 10:10 Carver Lobby and Carver 205 (120 mins - 4 talks) (120 mins - 4 talks) Carver Hall (room numbers below) Carver Hall (room numbers below)

10:30 8 parallel sessions: 9 parallel sessions: Coffee Break (30 mins) 10:30 (101) Combinatorial Matrix (101) Combinatorial Matrix Carver Lobby and Carver 205 10:40 Parallel Sessions 1 Theory Theory 10:40 (90 mins - 3 talks) (294) Distance & Dynamical (204) Distances on Networks Carver Hall (room numbers below) Systems (268) Krylov & filtering for (204) Geometry eigenvalues 11:00 8 parallel sessions: (268) Numerical Ranges (305) Matrix Inequalities Plenary 11 (50 mins) 11:00 (202) Combinatorial Matrix (305) Positivity with (232) Positivity with Hoover 2055 Theory Applications Applications (305) Matrix Inequalities (274) Representation Theory (274) Random Matrix Theory Raf Vandebril (232) Nonnegative Inverse (232) Contributed 4 Box lunch available for LHF (294) Tensors and Manifolds KU Leuven Eigenvalue (282) Contributed 5 participants (282) Toeplitz Matrices and RH ILAS 30th Anniversary LAA (204) Numerical Eigenvalue (290) Contributed 11 Lecturer Methods Fast and Stable Roots of (268) Numerical Ranges Polynomials via Companion (294) Operator Algebra Matrices 11:50 (274) Representation Theory Buses Load 11:50am Closing Remarks (15 mins) 11:50 (282) Solving Matrix Equations Hoover 2055 Buses leave LHF at 12 noon Travel safely home!

12:10 Lunch Break (95 mins) Lunch Break (95 mins) Lunch Break (95 mins) 12:10

On your own -- Please see your On your own -- Please see your On your own -- Please see your program for lunch options program for lunch options program for lunch options on ISU Campus and nearby! on ISU Campus and nearby! on ISU Campus and nearby!

Pre-Purchased Box Lunches will be distributed in the Carver Hall Lobby.

13:00 Buses return to ISU 1:00pm 13:00 (approximate)

13:15 Parallel Sessions 7 13:15 (90 mins - 3 talks) Carver Hall (see next page for details and room numbers)

Time Monday, July 24 Tuesday, July 25 Wednesday, July 26 Thursday, July 27 Friday, July 28 Time Time Monday, July 24 Tuesday, July 25 Wednesday, July 26 Thursday, July 27 Friday, July 28 Time 13:45 Plenary 3 (50 mins) Plenary 6 (50 mins) Parallel Sessions 7 (starts at 13:15) Plenary 9 (50 mins) 13:45 Hoover 2055 Hoover 2055 9 parallel sessions: Hoover 2055 (294) Association Schemes Chris Godsil Hal Caswell (232) Mathematical Biology Willem Haemers University of Waterloo University of Amsterdam (305) Matrix Inequalities Tilburg University (274) Numerical Eigenvalue Graph invariants from Matrix population models: Methods Spectral characterizations of quantum walks Connecting individuals and (268) Solving Matrix Equations graphs populations (204) Spectral Graph Theory (202) Zero Forcing 14:35 Walking time (10 mins) Walking time (10 mins) (282) Numerical Ranges Plenary 10 (50 mins) 14:35 (290) Contributed 8 Hoover 2055 14:45 Parallel Sessions 2 Parallel Sessions 5 Coffee Break (30 mins) 14:45 (90 mins - 3 talks) (90 mins - 3 talks) Carver Lobby and Carver 205 Stefan Güttel Carver Hall (room numbers below) Carver Hall (room numbers below) The University of Manchester SIAG-LA Lecturer 9 parallel sessions: 8 parallel sessions: (274) Education (294) Association Schemes The Nonlinear Eigenvalue 15:15 (268) Krylov & filtering for (202) Education Parallel Sessions 8 Problem 15:15 eigenvalues (232) Mathematical Biology (90 mins - 3 talks) 15:25 (232) Mathematical Biology (305) Matrix Polynomials Carver Hall (room numbers below) Coffee Break (30 mins) 15:25 (305) Matrix Inequalities (268) Solving Matrix Equations Carver Lobby and Carver 205 (202) Positivity with Applications (204) Spectral Graph Theory 8 parallel sessions: (294) Solving Matrix Equations (274) Contributed 6 (294) Association Schemes (204) Spectral Graph Theory (268) Compressed Sensing (282) Contributed 1 (232) Matrix Polynomials (290) Contributed 2 (305) Quantum Information 16:00 Science Parallel Sessions 10 16:00 (274) Random Matrix Theory (90 mins - 3 talks) (204) Spectral Graph Theory Carver Hall (room numbers below) 16:15 Coffee Break (30 mins) Coffee Break (30 mins) (202) Zero Forcing 16:15 Carver Lobby and Carver 205 Carver Lobby and Carver 205 (290) Contributed 10 9 parallel sessions: (101) Combinatorial Matrix Theory (204) Compressed Sensing (268) Matrix Inequalities 16:45 Parallel Sessions 3 Parallel Sessions 6 ILAS Business Meeting (232) Matrix Polynomials 16:45 (90 mins - 3 talks) (90 mins - 3 talks) (90 mins) (294) Operator Algebra Carver Hall (room numbers below) Carver Hall (room numbers below) Carver 305 (305) Quantum Information Science 8 parallel sessions: 7 parallel sessions: (282) Toeplitz Matrices and RH (294) Association Schemes (202) Distances on Networks (274) Contributed 12 (202) Compressed Sensing (274) Education (290) Contributed 13 (274) Education (268) Krylov & filtering for (232) Mathematical Biology eigenvalues 17:30 (268) Matrix Polynomials (232) Mathematical Biology Walking time (15 mins) 17:30 (305) Quantum Information (305) Quantum Information Science Science 17:45 (204) Zero Forcing (282) Toeplitz Matrices & RH Banquet 17:45 (282)Contributed 3 (204) Zero Forcing (135 mins) Memorial Union Great Hall

Presentation of Hans Schneider Prize 18:15 Walking time (15 mins) 18:15

18:30 Opening Reception and 18:30 Poster Session (90 mins) Memorial Union Sun Room

ILAS 30th Birthday Celebration and Special Recognition of James and Judith Weaver, long-time ILAS volunteers!

Monday, July 24 Tuesday, July 25 Wednesday, July 26 Thursday, July 27 Friday, July 28 Scientific Information

Plenary Lectures

Rajendra Bhatia, Indian Statistical Institute, Hans Schneider Prize Speaker, Thursday, 8:00, Hoover 2055 Another metric, another mean Abstract The geometric mean of several positive definite matrices has been extensively studied in recent years, and has been much talked about in recent ILAS meetings. This mean is defined as the solution to a least squares problem with respect to a Riemannian metric on the space of positive definite matrices. There is another very interesting metric that gives rise to the Bures-Wasserstein distance much used in quantum information and in optimal transport. We will describe some fea- tures of this distance, and the associated two-variable and several-variable mean.

Hal Caswell, University of Amsterdam, Tuesday, 13:45, Hoover 2055 Matrix population models: Connecting individuals and populations Abstract The dynamics of populations depend on the survival, fertility, development, and movement of in- dividuals. Individuals differ in those processes depending on their age, size, developmental stage, health status, physiological condition, past history, or a host of other variables. Formulating these dynamics as matrix operators has provided a rich framework for theoretical and applied population ecology. Indeed, the Perron-Frobenius theorem may have been invoked more frequently than any other mathematical result in conservation biology. This talk will survey some recent developments that have opened new perspectives on the connec- tion of individuals and populations, and that may be of interest to fans of linear algebra. These developments have inspired a tighter link between matrix population models and absorbing Markov chains, including Markov chains with rewards. As models for individual development, the results include the moments of lifetime reproductive output, lifetime income, and lifetime experience of health outcomes. One of the conclusions is an increased appreciation for the importance of indi- vidual stochasticity and unobserved heterogeneity as sources of variance in demographic outcomes. This research has been supported by ERC Advanced Grant 322989, NWO Project ALWOP.2015.100, and NSF Grant DEB-1257545.

Chris Godsil, University of Waterloo, Monday, 13:45, Hoover 2055 Graph invariants from quantum walks Abstract Work in quantum computing leads physicists to ask questions about matrices of the form exp(itM), where M is the adjacency (or Laplacian) matrix of a graph. Such a family of matrices defines what is known as a continuous quantum walk. Questions raised by physicists about these walks lead to a number of interesting mathematical problems; the basic goal is to derive properties of the associated quantum system from properties of the underlying graph. In my talk I will discuss some of these problems, but I will actually focus on some new graph invariants that have arisen from work in this area. (These can defined without use of the words ”physics” or ”quantum” but are nonetheless interesting.)

1 Stefan G¨uttel, The University of Manchester, SIAG-LA Lecturer, Thursday, 14:35, Hoover 2055 The Nonlinear Eigenvalue Problem Abstract n×n Given a matrix-valued function F : C ⊇ Ω → C , the basic nonlinear eigenvalue problem consists of finding scalars z ∈ Ω for which F (z) is singular. Such problems arise in many areas of computa- tional science and engineering, including acoustics, control theory, fluid mechanics, and structural engineering. In this talk I will discuss some interesting mathematical properties of nonlinear eigenvalue prob- lems and then review recently developed algorithms for their numerical solution. Emphasis will be given to the linear algebra problems to be solved in these algorithms and to the choice of parameters.

Willem Haemers, Tilburg University, Thursday, 13:45, Hoover 2055 Spectral characterizations of graphs Abstract Spectral graph theory deals with the relation between the structure of a graph and the eigenvalues (spectrum) of an associated matrix, such as the adjacency matrix A and the Laplacian matrix L. Many results in spectral graph theory give necessary condition for certain graph properties in terms of the spectrum of A or L. Typical examples are spectral bounds for characteristic numbers of a graph, such as the independence number, the chromatic number, and the isoperimetric number. Another type of relations are characterization. These are conditions in terms of the spectrum of A or L, which are necessary and sufficient for certain graph properties. Two famous examples are: (i) a graph is bipartite if and only if the spectrum of A is invariant under multiplication by −1, and (ii) the number of connected components of a graph is equal to the multiplicity of the eigenvalue 0 of L. In this talk we will survey graph properties that admit such a spectral characterization. In the special case that the graph itself is characterized by the spectrum of A or L, we say that the graph is determined by the considered spectrum. Although many graphs are not determined by the spec- trum of A or L it is conjectured that almost all graphs are determined by their adjacency spectrum (and perhaps also by the Laplacian spectrum). We will report on recent results concerning this conjecture.

Tamara G. Kolda, Sandia National Laboratories, Tuesday, 8:00, Hoover 2055 Tensor Decomposition: A Mathematical Tool for Data Analysis and Compression Abstract Tensors are multiway arrays, and tensor decompositions are powerful tools for data analysis and compression. In this talk, we demonstrate the wide-ranging utility of both the canonical polyadic (CP) and Tucker tensor decompositions with examples in neuroscience, chemical detection, and combustion science. The CP model is extremely useful for interpretation, as we show with an example in neuroscience. However, it can be difficult to fit to real data for a variety of reasons. We present a novel randomized method for fitting the CP decomposition to dense data that is more scalable and robust than the standard techniques. The Tucker model is useful for compression and can guarantee the accuracy of the approximation. We show that it can be used to compress massive data sets by orders of magnitude; this is done by determining the latent low-dimensional multilin- ear manifolds. Lastly, we consider the modeling assumptions for fitting tensor decompositions to data and explain alternative strategies for different statistical scenarios. This talk features joint work with Woody Austin (University of Texas), Casey Battaglino (Georgia Tech), Grey Ballard (Wake Forrest), Alicia Klinvex (Sandia), Hemanth Kolla (Sandia), and Alex Williams (Stanford University).

2 Mikl´osP´alfia, Sungkyunkwan University and MTA-DE “Lend¨ulet”Functional Analysis Research Group, Taussky-Todd Lecturer, Tuesday, 8:50, Hoover 2055 On the recent advances in the multivariable theory of operator monotone functions and means Abstract The origins of this talk go back to the fundamental theorem of Loewner in 1934 on operator mono- tone real functions and also to the hyperbolic geometry of positive matrices. Loewner’s theorem characterizing one variable operator monotone functions has been very influential in matrix anal- ysis and operator theory. Among others it lead to the Kubo-Ando theory of two-variable operator means of positive operators in 1980. One of the nontrivial means of the Kubo-Ando theory is the non-commutative generalization of the geometric mean which is intimately related to the hyperbolic, non-positively curved Riemannian structure of positive matrices. This geometry provides a key tool to define multivariable general- izations of two-variable operator means. Arguably the most important example of them all is the Karcher mean which is the center of mass on this manifold. This formulation enables us to define this mean for probability measures on the cone of positive definite matrices extending further the multivariable case. Even the infinite dimensional case of positive operators is tractable by aban- doning the Riemannian structure in favor of a Banach-Finsler structure provided by Thompson’s part metric on the cone of positive definite operators. This metric enables us to develop a general theory of means of probability measures defined as unique solutions of nonlinear operator equations on the cone, with the help of contractive semigroups of nonlinear operators. The order preserving property of operator means and operator monotone functions are crucial in this theory. We also introduce the recently established structure theory of multivariable operator monotone functions extending the classical result of Loewner into the non-commutative multivariable realm of free functions, providing theoretically explicit closed formulas for our multivariable operator means.

Vern Paulsen, University of Waterloo, Monday, 8:30, Hoover 2055 Quantum Chromatic Numbers Abstract The chromatic number of a graph can be characterized as the minimal c for which a perfect de- terministic strategy exists for a game called the c-coloring game. If instead of giving deterministic the players use classical random variables to produce their answers then the least c for which the players can win the c-coloring game with probability one is still the chromatic number. However, if they are allowed to use the random outcomes of entangled quantum experiments to produce their answers, then the players can win the c-coloring game with probability one for values of c that are much smaller than the chromatic number. The least c for which one can win this game using such quantum probabilities is called the quantum chromatic number of the graph. Comput- ing this integer reduces to finding systems of projection matrices that satisfy certain combinatorial identities. Also, there are several possible models for the set of quantum probability densities, whether these are all the same or different is related to conjectures of Connes and Tsirelson. These different models lead to several possible variants of the quantum chromatic number. In this talk, I will introduce these ideas and introduce a free algebra whose representation theory determines the values of these chromatic numbers.

3 Helena Smigocˇ , University College Dublin, LAMA Lecturer, Monday, 9:20, Hoover 2055 From positive matrices to negative polynomial coefficients Abstract The nonnegative inverse eigenvalue problem, the problem of charactarising all lists of eigenvalues of entry-wise nonnegative matrices, motivated the construction of matrices with nonnegative entries and a given set of eigenvalues. Constructions based on companion matrices proved to be one of the most fruitful approaches to this problem. We will review several different companion-type construc- tions, and learn about some extensions of classical results on the roots of polynomials developed in the process. The talk concludes with some related results on the coefficients of power series. Joint work with Richard Ellard (University College Dublin), Thomas Laffey (University College Dublin) and Raphael Loewy (Technion).

Raf Vandebril, KU Leuven, ILAS 30th Anniversary LAA Lecturer, Friday, 11:00, Hoover 2055 Fast and Stable Roots of Polynomials via Companion Matrices Abstract In this talk we present a fast and stable algorithm for computing roots of polynomials. The roots are found by computing the eigenvalues of the associated companion matrix. A companion matrix is an upper Hessenberg matrix that is of unitary-plus-rank-one form, that is, it is the sum of a unitary matrix and a rank-one matrix. When running Francis’s implicitly-shifted QR algorithm this property is preserved, and exactly that is exploited here. To compactly store the matrix we will show that only 3n−1 rotators are required, so the storage space is O(n). In fact, these rotators only represent the unitary part, but we will show that we can retrieve the rank-one part from the unitary part with a trick. It is thus not necessary to store the rank-one part explicitly. Francis’s algorithm tuned for working on this representation requires only O(n) flops per iteration and thus O(n2) flops in total. The algorithm is normwise backward stable and is shown to be about as accurate as the (slow) Francis QR algorithm applied to the companion matrix without exploiting the structure. It is also faster than other O(n2) methods that have been proposed, and its accuracy is comparable or better.

Rachel Ward, University of Texas, Thursday, 8:50, Hoover 2055 Learning dynamical systems from highly corrupted measurements Abstract We consider the problem of learning the governing equations in a system of ODES from possibly noisy snapshots of the system in time. Using a combination of tools from ergodic theory and com- pressive sensing, we show that if the governing equations are polynomial of given maximal degree, then the polynomial coefficients can be recovered exactly – even when most of the snapshots are highly corrupted by noise – under certain ergodicity assumptions. Important in high-dimensional problems, such coefficients can be exactly recovered even when the number of measurements is smaller than the dimension of the polynomial space, assuming the underlying polynomial expan- sions are sparse. Finally, we present several numerical results suggesting that L1-minimization based recovery algorithms can exactly recover dynamical systems in a much wider regime.

4 Mini-Symposia Summary

MS-1 Linear Algebra Aspects of Association Schemes (Association Schemes): Allen Herman and Bangteng Xu Parallel Session 3 Mon., 16:45–18:15, Room 294 Parallel Session 7 Wed., 13:15–14:45, Room 294 Parallel Session 5 Tue., 15:15–16:15, Room 294 Parallel Session 8 Wed., 15:15–16:45, Room 294 MS-2 Combinatorial Matrix Theory: Minerva Catral and Louis Deaett Parallel Session 1 Mon., 11:10–12:10, Room 202 Parallel Session 10 Thu., 16:00–17:30, Room 101 Parallel Session 4 Tue., 10:10–12:10, Room 101 Parallel Session 11 Fri., 8:30–10:30, Room 101 Parallel Session 9 Thu., 10:10–12:10, Room 101 MS-3 Compressed sensing and matrix completion (Compressed Sensing): Simon Foucart and Namrata Vaswani Parallel Session 3 Mon., 16:45–18:15, Room 202 Parallel Session 10 Thu., 16:00–17:30, Room 204 Parallel Session 8 Wed., 15:15–16:45, Room 268 Parallel Session 11 Fri., 8:30–10:30, Room 268 MS-4 Distance problems in linear algebra, dynamical systems and control (Distance & Dynamical Systems): Elias Jarlebring and Wim Michiels Parallel Session 4 Tue., 10:10–12:10, Room 294 MS-5 Distances on networks and its applications (Distances on Networks): Angeles Carmona, Andres M. Encinas, and Margarida Mitjana Parallel Session 6 Tue., 16:45–18:15, Room 202 Parallel Session 9 Thu., 10:10–12:10, Room 204 MS-6 Linear Algebra Education (Education): Rachel Quinlan and Megan Wawro Parallel Session 2 Mon., 14:45–16:15, Room 274 Parallel Session 5 Tue., 14:45–16:15, Room 202 Parallel Session 3 Mon., 16:45–17:45, Room 274 Parallel Session 6 Tue., 16:45–18:15, Room 274 MS-7 Linear Algebra and Geometry (Geometry): Gabriel Larotonda and Alejandro Varela Parallel Session 4 Tue., 10:10–11:40, Room 204 Parallel Session 11 Fri., 9:00–10:00, Room 290 MS-8 Krylov and filtering methods for eigenvalue problems (Krylov & filtering for eigenvalues): Jared Aurentz and Karl Meerbergen Parallel Session 2 Mon., 14:45–16:15, Room 268 Parallel Session 9 Thu., 10:10–11:40, Room 268 Parallel Session 6 Tue., 16:45–18:15, Room 268 MS-9 Linear Algebra and Mathematical Biology (Mathematical Biology): Julien Arino and Natalia Komarova Parallel Session 2 Mon., 14:45–16:15, Room 232 Parallel Session 6 Tue., 16:45–18:15, Room 232 Parallel Session 3 Mon., 16:45–18:15, Room 232 Parallel Session 7 Wed., 13:15–14:15, Room 232 Parallel Session 5 Tue., 14:45–16:15, Room 232 MS-10 Matrix Analysis: Inequalities, Means, and Majorization (Matrix Inequalities): Fumio Hiai and Yongdo Lim Parallel Session 1 Mon., 10:40–12:10, Room 305 Parallel Session 9 Thu., 10:10–12:10, Room 305 Parallel Session 2 Mon., 15:15–16:15, Room 305 Parallel Session 10 Thu., 16:00–17:30, Room 268 Parallel Session 7 Wed., 13:45–14:45, Room 305

5 MS-11 Matrix Polynomials: Froil´anDopico and Paul Van Dooren Parallel Session 3 Mon., 16:45–18:15, Room 268 Parallel Session 8 Wed., 15:15–16:45, Room 232 Parallel Session 5 Tue., 14:45–16:15, Room 305 Parallel Session 10 Thu., 16:00–17:30, Room 232 MS-12 The Nonnegative Inverse Eigenvalue Problem (Nonnegative Inverse Eigenvalue): Charles R. Johnson and Pietro Paparella Parallel Session 1 Mon., 10:40 – 12:10, Room 232 Parallel Session 11 Fri., 9:00–10:30, Room 232 MS-13 Recent Advancements in Numerical Methods for Eigenvalue Computation (Numerical Eigenvalue Methods): James Vogel, Xin Ye, and Jianlin Xia Parallel Session 1 Mon., 10:40 – 12:10, Room 204 Parallel Session 7 Wed., 13:15–14:15, Room 274 MS-14 Numerical Ranges: Patrick X. Rault and Ilya Spitkovsky Parallel Session 1 Mon., 10:40 – 12:10, Room 268 Parallel Session 7 Wed., 13:15–14:15, Room 282 Parallel Session 4 Tue., 10:10–12:10, Room 268 MS-15 Matrix techniques in operator algebra theory (Operator Algebra): Vern Paulsen and Hugo Woerdeman Parallel Session 1 Mon., 10:40 – 12:10, Room 294 Parallel Session 10 Thu., 16:00–17:30, Room 294 MS-16 Linear Algebra and Positivity with Applications to Data Science (Positivity with Applications): Dominique Guillot, Apoorva Khare, and Bala Rajaratnam Parallel Session 2 Mon., 14:45–16:15, Room 202 Parallel Session 9 Thu., 10:10–11:10, Room 232 Parallel Session 4 Tue., 10:10–12:10, Room 305 MS-17 Linear Algebra and Quantum Information Science (Quantum Information Science): Chi-Kwong Li, Yiu Tung Poon, and Raymond Nung-Sing Sze Parallel Session 3 Mon., 16:45–18:15, Room 305 Parallel Session 10 Thu., 16:00–17:30, Room 305 Parallel Session 6 Tue., 16:45–18:15, Room 305 Parallel Session 11 Fri., 8:30–10:00, Room 305 Parallel Session 8 Wed., 15:15–16:45, Room 305 MS-18 Random matrix theory for networks (Random Matrix Theory): Dustin Mixon and Rachel Ward Parallel Session 8 Wed., 15:15–16:45, Room 274 Parallel Session 9 Thu., 10:10–12:10, Room 274 MS-19 Representation Theory: Jonas Hartwig Parallel Session 1 Mon., 10:40 – 12:10, Room 274 Parallel Session 11 Fri., 9:00–10:00, Room 274 Parallel Session 4 Tue., 10:10–12:10, Room 274 MS-20 Solving Matrix Equations: Qing-Wen Wang and Yang Zhang Parallel Session 1 Mon., 10:40 – 12:10, Room 282 Parallel Session 5 Tue., 14:45–16:15, Room 268 Parallel Session 2 Mon., 14:45–15:45, Room 294 Parallel Session 7 Wed., 13:15–14:45, Room 268 MS-21 Spectral Graph Theory: Nair Abreu and Leonardo de Lima Parallel Session 2 Mon., 14:45–16:15, Room 204 Parallel Session 8 Wed., 15:15–16:45, Room 204 Parallel Session 5 Tue., 14:45–16:15, Room 204 Parallel Session 11 Fri., 8:30–10:30, Room 204 Parallel Session 7 Wed., 13:15–14:45, Room 204

6 MS-22 Matrices, Tensors and Manifold Optimization (Tensors and Manifolds): Daniel Kressner and Bart Vandereycken Parallel Session 9 Thu., 10:10–11:40, Room 294 Parallel Session 11 Fri., 8:30–10:30, Room 294 MS-23 Toeplitz Matrices and Riemann Hilbert Problems (Toeplitz Matrices and RH): Jani Virtanen and Gy¨orgy Pal Geh´er Parallel Session 6 Tue., 17:15–18:15, Room 282 Parallel Session 10 Thu., 16:00–17:30, Room 282 Parallel Session 9 Thu., 10:10–11:40, Room 282 Parallel Session 11 Fri., 8:30–10:30, Room 282 MS-24 Zero Forcing: Its Variations and Applications (Zero Forcing): Daniela Ferrero, Mary Flagg, and Michael Young Parallel Session 3 Mon., 16:45–18:15, Room 204 Parallel Session 7 Wed., 13:15–14:45, Room 202 Parallel Session 6 Tue., 16:45–18:15, Room 204

Mini-Symposia with Speakers

MS-1 Linear Algebra Aspects of Association Schemes Parallel Session 3 Monday, July 24, 16:45 – 18:15, Room 294 16:45 Christopher French, Realizations of nonsymmetric hypergroups of rank 4 as association schemes 17:15 Bangteng Xu, Pseudo-direct sums and wreath products of loose-coherent algebras with appli- cations to coherent configurations 17:45 Siwaporn Mamart, Merging in bipartite distance-regular graphs Parallel Session 5 Tuesday, July 25, 15:15 – 16:15, Room 294 15:15 Supalak Sumalroj, The nonexistence of a distance-regular graph with intersection array {22, 16, 5; 1, 2, 20} 15:45 Paul Terwilliger, Leonard triples of q-Racah type and their pseudo intertwiners Parallel Session 7 Wednesday, July 26, 13:15 – 14:45, Room 294 13:15 Mitsugu Hirasaka, On meta-thin association schemes with certain conditions 13:45 Alyssa Sankey, Covering configurations derived from weighted coherent configurations 14:15 Gurmail Singh, C-algebras arising from integral Fourier matrices Parallel Session 8 Wednesday, July 26, 15:15 – 16:45, Room 294 15:15 Harvey Blau, Reality-based algebras with a 2-dimensional representation 15:45 Jason Williford, Q-polynomial association schemes with at most 5 classes 16:15 Sung Yell Song, Partial geometric designs obtained from association schemes MS-2 Combinatorial Matrix Theory Parallel Session 1 Monday, July 24, 11:10 – 12:10, Room 202 11:10 Shahla Nasserasr, Distinct eigenvalues of graphs 11:40 Polona Oblak, The maximum of the minimal multiplicity of eigenvalues of symmetric matrices whose pattern is constrained by a graph Parallel Session 4 Tuesday, July 25, 10:10 – 12:10, Room 101 10:10 Ravindra Bapat, Squared distance matrix of a weighted tree 10:40 Stephen Kirkland, (0, 1) Matrices and the Analysis of Social Networks 11:10 Jane Breen, Minimising the largest mean first passage time of a Markov chain and the influ- ence of directed graphs 11:40M a Jos´eJim´enez, Triangular matrices and combinatorial recurrences

7 Parallel Session 9 Thursday, July 27, 10:10 – 12:10, Room 101 10:10 Richard A Brualdi, The Permutation and Alternating Sign Matrix Rational Cones 10:40 Louis Deaett, Matroids and the minimum rank problem for zero-nonzero patterns 11:10 Franklin Kenter, Computational Approaches for Minimum Rank Problems and their Varia- tions 11:40 Xiaohong Zhang, Hadamard diagonalizable graphs used to transfer quantum information Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 101 16:00 Judi McDonald, Spectrally Arbitrary Patterns over Different Fields 16:30 Colin Garnett, Combinatorial and Algebraic Conditions that preclude SAPpiness 17:00 Kevin Vander Meulen, Recursive constructions for spectrally arbitrary patterns Parallel Session 11 Friday, July 28, 8:30 – 10:30, Room 101 8:30 Zhongshan Li, Sign patterns that allow diagonalizability 9:00 Wei Gao, Tree Sign Patterns that Require Hn 9:30 Xavier Martinez-Rivera, The signed epr-sequence 10:00 Mohsen Aliabadi, On matching in groups and vector spaces MS-3 Compressed sensing and matrix completion Parallel Session 3 Monday, July 24, 16:45 – 18:15, Room 202 16:45 Waheed Bajwa, Collaborative dictionary learning from big, distributed data

17:15 Arian Maleki, On The Asymptotic Performance of `q-regularized Least Squares 17:45 Dustin Mixon, Explicit Restricted Isometries Parallel Session 8 Wednesday, July 26, 15:15 – 16:45, Room 268 15:15 Hassan Mansour, A Kaczmarz Method for Low Rank Matrix Recovery 15:45 Rob Nowak, Low Rank Matrix Completion and Beyond 16:15 Simon Foucart, Concave Mirsky Inequality and Low-Rank Recovery Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 204 16:00 Paul Hand, Compressed Sensing from Phaseless Gaussian Measurements via Linear Program- ming in the Natural Parameter Space 16:30 Rayan Saab, Phase retrieval from local measurements 17:00 Chinmay Hegde, Stable inversion of (certain) random periodic feature maps Parallel Session 11 Friday, July 28, 8:30 – 10:30, Room 268 8:30 Yuxin Chen, The Projected Power Method: A Nonconvex Algorithm for Joint Alignment 9:00 Yuejie Chi, Provably robust and fast low-rank matrix recovery with outliers 9:30 Ludwig Schmidt, Faster Constrained Optimization via Approximate Projections 10:00 Namrata Vaswani, New Results for Provably Correct Dynamic Robust Principal Components Analysis (PCA) MS-4 Distance problems in linear algebra, dynamical systems and control Parallel Session 4 Tuesday, July 25, 10:10 – 12:10, Room 294 10:10 Francesco Borgioli, An iterative algorithm to compute the pseudospectral abscissa for real perturbations of a nonlinear eigenvalue problem 11:10 Emre Mengi, Subspace procedures for large-scale stability radius problems 11:40 Bart Vandereycken, Subspace acceleration for computing the Crawford number

8 MS-5 Distances on networks and its applications Parallel Session 6 Tuesday, July 25, 16:45 – 18:15, Room 202 16:45 Douglas J. Klein, Intrinsic Metrics on Graphs and Applications 17:15 Angeles´ Carmona, Matrix Tree Theorem for Schr¨odinger operators on networks 17:45 Milan Randic, Graphical Bioinformatics: The Exact Solution to the Protein Alignment Prob- lem Parallel Session 9 Thursday, July 27, 10:10 – 12:10, Room 204 10:10 Yujun Yang, A recursion formula for resistance distances and its applications 10:40 Jiang Zhou, Resistance distance and resistance matrix of graphs 11:10 Enric Mons´o, Green’s kernel of Schr¨odingeroperators on generalized subdivision networks 11:40 Andr´esM. Encinas, The effective resistance of extended or contracted networks MS-6 Linear Algebra Education Parallel Session 2 Monday, July 24, 14:45 – 16:15, Room 274 14:45 Sepideh Stewart, Embodied, symbolic and formal worlds: A basis for the vector space of mathematical thinking. 15:15 Carlos Nicolas, Teaching combinatorial convexity applications in an undergraduate linear al- gebra class. 15:45 Megan Wawro, Inquiry-Oriented Linear Algebra: An overview and an example. Parallel Session 3 Monday, July 24, 16:45 – 17:45, Room 274 16:45 Ana Paulina Figueroa, Multiplying Matrices: an activity based approach. 17:15 Damjan Kobal, Visualizations and the Concept of Proof in Basic Linear Algebra Teaching. Parallel Session 5 Tuesday, July 25, 14:45 – 16:15, Room 202 14:45 David Strong, Motivating Examples, Meaning and Context in Teaching Linear Algebra. 15:15 Maria Trigueros, Students learning through a modeling course on elementary Linear Algebra. 15:45 Christine Andrews-Larson, Solving Linear Systems: Reconstructing Unknowns to Interpret Row Reduced Matrices. Parallel Session 6 Tuesday, July 25, 16:45 – 18:15, Room 274 16:45 Guershon Harel, The Learning and Teaching of Linear Algebra Through the Lenses of DNR- Based Instruction in Mathematics. 17:15 Hamide Dogan, Multi-Faceted Nature of Matrices. 17:45 Helena Smigoc,ˇ Using Nonnegative Matrix Factorization to Analyze a Set of Documents.

MS-7 Linear Algebra and Geometry Parallel Session 4 Tuesday, July 25, 10:10 – 11:40, Room 204 10:10 Gy¨orgyGeh´er, Symmetry transformations on Grassmann spaces 10:40 Tin-Yau Tam, Geometry and unitarily similarity orbit of a matrix 11:10 Eduardo Chiumiento, Approximation by partial isometries and symmetric approximation of finite frames Parallel Session 11 Friday, July 28, 9:00 – 10:00, Room 290 9:00 Alejandro Varela, Short curves in orbits of unitary subgroups 9:30 Martin Argerami, Matricial and numerical ranges in the classification of small-dimension operator systems

9 MS-8 Krylov and filtering methods for eigenvalue problems Parallel Session 2 Monday, July 24, 14:45 – 16:15, Room 268 14:45 Yasunori Futamura, A real-valued method for improving efficiency of a contour integral eigen- value solver 15:15 Brendan Gavin, The FEAST Eigenvalue Algorithm with Inexact Solves 15:45 Anthony Austin, Estimating Eigenvalue Distributions Parallel Session 6 Tuesday, July 25, 16:45 – 18:15, Room 268 16:45 Vassilis Kalantzis, Rational filtering Schur complement techniques for the solution of large- scale generalized symmetric eigenvalue problems 17:15 Yousef Saad, Rational and polynomial filtering, spectrum slicing, and the EVSL package 17:45 Roel van Beeumen, A rational filtering connection between contour integration and rational Krylov methods for large scale eigenvalue problems Parallel Session 9 Thursday, July 27, 10:10 – 11:40, Room 268 10:10 Thomas Mach, LAA Early Career Speaker, Inverse Free Rational Krylov Subspaces for Com- puting Matrix Functions 10:40 Daan Camps, On the implicit restart of the rational Krylov method 11:10 Vjeran Hari, On Element-wise and Block-wise Jacobi Methods for PGEP MS-9 Linear Algebra and Mathematical Biology Parallel Session 2 Monday, July 24, 14:45 – 16:15, Room 232 14:45 Marc Feldman, Reduction Principle for recombination, mutation and migration 15:15 Natalia Komarova, Stability of control networks in stem cell lineages 15:45 Jim Cushing, Some Matrix Population Models with Imprimitive Projection Matrices Parallel Session 3 Monday, July 24, 16:45 – 18:15, Room 232 16:45 Pauline van den Driessche, Inequalities on Spectral Bounds for Matrices in a Stage-Structured Population Model 17:15 Joe Tien, Disease spread on networks: integrating structure and dynamics through a general- ized inverse 17:45 Gleb Pogudin, Elimination for nonlinear ODEs arising in biology Parallel Session 5 Tuesday, July 25, 14:45 – 16:15, Room 232 14:45 Lee Altenberg, ”Error Catastrophes” and the Information Content of the Perron vector in Quasispecies Models of Evolution 15:15 Zhijun Wu, Computing Dense versus Sparse Equilibrium States for Evolutionary Games 15:45 Evan Milliken, A technique to approximate the probability of partial extinction events in metapopulations. Parallel Session 6 Tuesday, July 25, 16:45 – 18:15, Room 232 16:45 Patrick De Leenheer, The population dynamics of a fish species subject to environmental stochasticity 17:15 Julien Arino, The population dynamics of a fish species subject to environmental stochasticity 17:45 Mark Artzrouni, A Leslie matrix model for Sicyopterus lagocephalus in La R´eunion: sensi- tivity, uncertainty and research prioritization

10 Parallel Session 7 Wednesday, July 26, 13:15 – 14:15, Room 232 13:15 Jonathan Smith, Virtual species and matrix solution of Eigen’s equations 13:45 Bruce Ayati, Mathematics for Musculoskeletal Diseases MS-10 Matrix Analysis: Inequalities, Means, and Majorization Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 305 10:40 Jimmie Lawson, The Karcher Barycentric Map for Positive Operator Probability Measures on Hilbert Space 11:10 Sejong Kim, An order inequality characterizing Cartan barycenters of positive definite matri- ces 11:40 Takeaki Yamazaki, Properties of weighted operator means via generalized relative operator entropy Parallel Session 2 Monday, July 24, 15:15 – 16:15, Room 305 15:15 Yongdo Lim, Multiplicative Geometric Means 15:45 Masatoshi Ito, Estimations of power difference mean by Heron mean Parallel Session 7 Wednesday, July 26, 13:45 – 14:45, Room 305 13:45 Man-Duen Choi, Some assorted inequalities for positive linear maps 14:15 Fuad Kittaneh, A generalization of the Ando-Hiai-Okubo trace inequalities Parallel Session 9 Thursday, July 27, 10:10 – 12:10, Room 305 10:10 Lajos Molnar, Order automorphisms in matrix algebras and in operator algebras and their applications 10:40 Douglas Farenick, Isometries and contractions of density operators realtive to the Bures metric 11:10 Frank Hansen, Peierls-Bogolyubov’s inequality for deformed exponentials 11:40 Seung-Hyeok Kye, Separability of three qubit X-states Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 268 16:00 Pingping Zhang, Remarks on two determinantal inequalities 16:30 Takashi Sano, On classes of non-normal matrices/operators 17:00 Fumio Hiai, Log-majorization and Lie-Trotter formula for the Cartan barycenter MS-11 Matrix Polynomials Parallel Session 3 Monday, July 24, 16:45 – 18:15, Room 268 16:45 Paul Van Dooren, Robustness and perturbations of minimal bases. 17:15 Mar´ıaIsabel Bueno, A unified approach to Fiedler-like pencils via strong block minimal bases pencils. 17:45 Philip Saltenberger, Block Kronecker ansatz spaces for matrix polynomials. Parallel Session 5 Tuesday, July 25, 14:45 – 16:15, Room 305 14:45 Marc Van Barel, Solving polynomial eigenvalue problems by a scaled block companion lin- earization. 15:15 Javier P´erez, Structured backward error analyses of linearized polynomial eigenvalue problems. 15:45 Leonardo Robol, Fast and backward stable computation of the eigenvalues of matrix polyno- mials. Parallel Session 8 Wednesday, July 26, 15:15 – 16:45, Room 232 15:15 Steve Mackey, Majorization and matrix polynomials. 15:45 Elias Jarlebring, The infinite bi-Lanczos method for nonlinear eigenvalue problems.

11 16:15 Andrii Dmytryshyn, LAA Early Career Speaker, Generic matrix polynomials with fixed rank and fixed degree. Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 232 16:00 Vasilije Perovi´c, T -even nonlinear eigenvalue problems and structure-preserving interpolation. 16:30 Silvia Marcaida, Extended spectral equivalence. 17:00 Froil´anDopico, Paul Van Dooren’s Index Sum Theorem and the solution of the inverse rational eigenvalue problem. MS-12 The Nonnegative Inverse Eigenvalue Problem Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 232 10:40 Ricardo Soto, Structured nonnegative inverse elementary divisors problem 11:10 Pietro Paparella, A matricial view of the KarpeleviˇcTheorem 11:40 Carlos Mariju´an, On Symmetric Nonnegative Realizability Parallel Session 11 Friday, July 28, 9:00 – 10:30, Room 232 9:00 Sasmita Barik, On the spectra of multi-directed bipartite graphs 9:30 Miriam Pisonero, 5-Spectra of Symmetric Nonnegative Matrices 10:00 Raphael Loewy, A new necessary condition for the spectrum of nonnegative symmetric 5 × 5 matrices MS-13 Recent Advancements in Numerical Methods for Eigenvalue Computation Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 204 10:40 Jonathan Moussa, Local reduction of Hermitian eigenproblems 11:10 James Vogel, A Superfast Multi-Rank Eigenvalue Update: Algorithm, Analysis, and Applica- tions 11:40 Enyinda Onunwor, On the Computation of a Truncated SVD of a Large Linear Discrete Ill-Posed Problem Parallel Session 7 Wednesday, July 26, 13:15 – 14:15, Room 274 13:15 Tetsuya Sakurai, Nonlinear Sakurai-Sagiura method for electronic transport calculation 13:45 James Kestyn, New Functionality in the FEAST Eigenvalue Solver MS-14 Numerical Ranges Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 268 10:40 Kristin Camenga, The Gau-Wu number for 4 × 4 matrices. 11:10 Brian Lins, Eigenvalue crossings in Hermitian pencils and the boundary of the numerical range 11:40 Hiroshi Nakazato, Singular points of the Kippenhahn curves for unitary bordering matrices Parallel Session 4 Tuesday, July 25, 10:10 – 12:10, Room 268 10:10 Cesar Palencia, The numerical range as a spectral set 10:40 Linda Patton, Numerical ranges with rotational symmetry 11:10 Peng-Ruei Huang, Cyclic weighted shift matrix with reversible weights 11:40 Patrick Rault, Numerical ranges over finite fields Parallel Session 7 Wednesday, July 26, 13:15 – 14:15, Room 282 13:15 G¨oranBergqvist, Curves and envelopes that bound the spectrum of a matrix 13:45 Pan Shun Lau, The star-shapedness of a generalized numerical range

12 MS-15 Matrix techniques in operator algebra theory Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 294 10:40 Lawrence Fialkow, The core variety and representing measures in multivariable moment prob- lems 11:10 Scott McCullough, Matrix convex sets defined by non-commutative polynomials 11:40 Hugo J. Woerdeman, Complete spectral sets and numerical range Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 294 16:00 Radu Balan, On a Feichtinger Problem for trace-class operators 16:30 John Haas, Constructions of optimal like packings with DFT matrices 17:00 Eric Weber, Boundary Representations of Reproducing Kernels in the Hardy Space MS-16 Linear Algebra and Positivity with Applications to Data Science Parallel Session 2 Monday, July 24, 14:45 – 16:15, Room 202 14:45 Mahya Ghandehari, LAA Early Career Speaker, Geometric graphs and uniform embeddings 15:15 Alfred Hero, Continuum limits for shortest paths 15:45 Peter Diao, Distribution-Free Consistency of Graph Clustering Parallel Session 4 Tuesday, July 25, 10:10 – 12:10, Room 305 10:10 Nikolas Stott, Minimal upper bounds in the Loewner order: characterizations and parametriza- tion 10:40 Tanvi Jain, Hadamard powers of two classes of positive matrices 11:10 Shaun Fallat, Hadamard Powers, Critical Exponents, and Total Positivity 11:40 Alexander Belton, A quantitative form of Schoenberg’s theorem in fixed dimension Parallel Session 9 Thursday, July 27, 10:10 – 11:10, Room 232 10:10 Ilse Ipsen, Randomized matrix-free trace and log-determinant estimators 10:40 Cynthia Vinzant, Hyperbolicity and reciprocal linear spaces MS-17 Linear Algebra and Quantum Information Science Parallel Session 3 Monday, July 24, 16:45 – 18:15, Room 305 16:45 Chi-Kwong Li, Numerical range techniques in quantum information science 17:15 Shmuel Friedland, Entanglement of Boson quantum states 17:45 Michael Nathanson, An equivalence between local state discrimination and state transforma- tion in multipartite systems Parallel Session 6 Tuesday, July 25, 16:45 – 18:15, Room 305 16:45 Dariusz Chru´sci´nski, Positive maps from mutually unbiased bases 17:15 Wai Shing Tang, Some aspects of 2-positive linear maps on matrix algebras 17:45 D´anielVirosztek, Quantum f-divergence preserving maps on positive semidefinite operators acting on finite dimensional Hilbert spaces Parallel Session 8 Wednesday, July 26, 15:15 – 16:45, Room 305 15:15 Jinchuan Hou, Entropy exchange for infinite-dimensional systems 15:45 Rajesh Pereira, The Classical Mathematics Behind Some Concepts in Quantum Information 16:15 Xiaofei Qi, Measurement-Induced Nonlocality of Gaussian version Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 305 16:00 Thomas Schulte-Herbr¨uggen, Quantum Systems Theory as Reflected by Numerical Ranges 16:30 Stephan Weis, A new signature of quantum phase transitions from the numerical range

13 17:00 Nathaniel Johnston, LAA Early Career Speaker, Quantum Coherence and Quantum Entan- glement Parallel Session 11 Friday, July 28, 8:30 – 10:00, Room 305 8:30 Jianxin Chen, Quantum algorithm for multivariate polynomial interpolation 9:00 Sarah Plosker, Quantum state transfer via Hadamard diagonalizable graphs 9:30 Diane Christine Pelejo, On the Rank of Bipartite States with Prescribed Reduced States MS-18 Random matrix theory for networks Parallel Session 8 Wednesday, July 26, 15:15 – 16:45, Room 274 15:15 Sam Cole, A simple algorithm for spectral clustering of random graphs 15:45 Soledad Villar, Clustering subgaussian mixtures by semidefinite programming Parallel Session 9 Thursday, July 27, 10:10 – 12:10, Room 274 10:10 Thang Huynh, Phase Retrieval with Noise and Outliers 10:40 Shuyang Ling, Fast joint blind deconvolution and demixing via nonconvex optimization 11:10 Hamidreza Hakim Javadi, Non-negative Matrix Factorization Revisited 11:40 Tingran Gao, Manifold Learning on Fibre Bundles MS-19 Representation Theory Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 274 10:40 Apoorva Khare, Generalized nil-Coxeter algebras over complex reflection groups 11:10 Akaki Tikaradze, On the isomorphism problem of certain algebraic quantizations 11:40 Lisa Schneider, Multiplicities of Demazure flags Parallel Session 4 Tuesday, July 25, 10:10 – 12:10, Room 274 10:10 Tathagata Basak, Eisenstein series for hyperbolic reflection groups 10:40 Kayla Murray, Graded representations of current algebras 11:10 Matthew Lee, Global Weyl modules for non standard maximal parabolics of twisted affine Lie algebras 11:40 Mark Colarusso, The Gelfand-Zeitlin integrable system for complex orthogonal Lie algebras Parallel Session 11 Friday, July 28, 9:00 – 10:00, Room 274 cfirm9:00 Miodrag Iovanov, On incidence algebras and their representations 9:30 Sarah Bockting-Conrad, Some linear transformations associated with a tridiagonal pair of q-Racah type MS-20 Solving Matrix Equations Parallel Session 1 Monday, July 24, 10:40 – 12:10, Room 282 10:40 Eric King-wah Chu, Projection Methods for Riccati Equations 11:10 Yan-Fei Jing, Recent Progress on Block Krylov Subspace Methods for Linear Systems with Multiple Right-hand Sides 11:40 Jin Liang, Monotonicity of certain maps of positive definite matrices

14 Parallel Session 2 Monday, July 24, 14:45 – 15:45, Room 294 14:45 Qing-Wen Wang, A System of Matrix Equations over the Quaternion Algebra with Applica- tions 15:15 David Imberti, Condition Number of Krylov Matrices and Subspaces via Kronecker Product Structure Parallel Session 5 Tuesday, July 25, 14:45 – 16:15, Room 268 cfirm14:45 Xingping Sheng, A relaxed gradient based algorithm for solving generalized coupled Sylvester matrix equations 15:15 Ozlem¨ Esen, On the Diagonal Stability of Metzler Matrices 15:45 Lizhu Sun, Solutions of multilinear systems and characterizations for spectral radius of tensors Parallel Session 7 Wednesday, July 26, 13:15 – 14:15, Room 268 cfirm13:15 Caiqin Song, On solutions to the matrix equations XB − AX = CY and XB − AXb = CY 13:45 Yang Zhang, Solving Ore matrix equations MS-21 Spectral Graph Theory Parallel Session 2 Monday, July 24, 14:45 – 16:15, Room 204 14:45 Domingos Cardoso, Lexicographic polynomials of graphs and their spectra

15:15 Mike Tait, The spectral radius of a graph with no induced Ks,t 15:45 Vilmar Trevisan, Ordering starlike trees by their indices Parallel Session 5 Tuesday, July 25, 14:45 – 16:15, Room 204 14:45 Geir Dahl, Laplacian energy, threshold graphs and majorization 15:15 Enide Andrade, A lower bound for the energy of symmetric matrices and graphs 15:45 Mar´ıaRobbiano, α−Adjacency spectra of a compound graph of weighted Bethe trees Parallel Session 7 Wednesday, July 26, 13:15 – 14:45, Room 204 13:15 Carlos Hoppen, Eigenvalue location for graphs of small clique-width 13:45 Aida Abiad, An application of Hoffman graphs for spectral characterizations of graphs 14:15 Margarida Mitjana, Spectra of the generalized subdivision and other extensions of a network Parallel Session 8 Wednesday, July 26, 15:15 – 16:45, Room 204 15:15 Sebastian Cioaba, Maximizing the order of a regular graph with given valency and second eigenvalue 15:45 Leonardo de Lima, Graphs with all but two eigenvalues in [-2,0] 16:15 Suil Oh, The second largest eigenvalue and vertex-connectivity in regular graphs Parallel Session 11 Friday, July 28, 8:30 – 10:30, Room 204 8:30 Gabriel Coutinho, LAA Early Career Speaker, Quantum walks on trees 9:00 Krystal Guo, Quantum walks and graph isomorphism 9:30 Jephian C.-H. Lin, Note on von Neumann and R´enyientropies of a graph 10:00 Carolyn Reinhart, Results on the minimum number of distinct eigenvalues of graphs MS-22 Matrices, Tensors and Manifold Optimization Parallel Session 9 Thursday, July 27, 10:10 – 11:40, Room 294 10:10 Nicolas Boumal, Semidefinite programs with a dash of smoothness: Why and when the low- rank approach Works 10:40 Ju Sun, When are nonconvex optimization problems not scary? 11:10 Ke Wei, Guarantees of Riemannian optimization for low rank matrix reconstruction

15 Parallel Session 11 Friday, July 28, 8:30 – 10:30, Room 294 8:30 Alex Gorodetsky, Low-rank functional decompositions with applications to stochastic optimal control 9:00 Ke Ye, Tensor network ranks 9:30 Wen Huang, Intrinsic representation of tangent vectors and vector transport on matrix man- ifolds 10:00 Sutanoy Dasgupta, A Geometric framework for density modeling MS-23 Toeplitz Matrices and Riemann Hilbert Problems Parallel Session 6 Tuesday, July 25, 17:15 – 18:15, Room 282 17:15 Joao Serra, On the Riemann-Hilbert approach to Einstein’s field equations 17:45 Stefano Massei Computations with semi-infinite quasi-Toeplitz matrices Parallel Session 9 Thursday, July 27, 10:10 – 11:40, Room 282 10:10 Josh Isralowitz, Compactness of operators on Bergman and Fock spaces 10:40 Aamena Alqabani, Fredholm Properties of Toeplitz Operators on Fock Spaces 11:10 Richard Ferro, A Note on Structured Pseudospectra of Block Matrices Parallel Session 10 Thursday, July 27, 16:00 – 17:30, Room 282 16:00 Cristina Camara, Truncated Toeplitz operators and their spectra 16:30 Christophe Charlier, Thinning and conditioning of the Circular Unitary Ensemble 17:00 Jongrak Lee, Hyponormality of block Toeplitz operators with circulant matrix function symbols Parallel Session 11 Friday, July 28, 8:30 – 10:30, Room 282 8:30 Estelle Basor, Asymptotics of determinants of block Toeplitz matrices 9:00 Robert Buckingham, Nonintersecting Brownian motions on the unit circle with drift 9:30 Roozbeh Gharakhloo, On the asymptotic analysis of Toeplitz + Hankel determinants 10:00 Jani Virtanen, Transition asymptotics of Toeplitz determinants and their applications MS-24 Zero Forcing: Its Variations and Applications Parallel Session 3 Monday, July 24, 16:45 – 18:15, Room 204 16:45 Chassidy Bozeman, Zero forcing and power domination 17:15 Boris Brimkov, Connected zero forcing 17:45 Veronika Furst, Zero forcing and power domination for tensor products of graphs Parallel Session 6 Tuesday, July 25, 16:45 – 18:15, Room 204 16:45 Tracy Hall, Maehara’s Conjecture, the Delta Theorem, and the greedegree of a graph 17:15 Seth Meyer, Z sharp forcing

17:45 Steve Butler, The Zq variation of zero forcing Parallel Session 7 Wednesday, July 26, 13:15 – 14:45, Room 202 13:15 Mary Flagg, Nordhaus-Gaddum bounds for power domination 13:45 Daniela Ferrero, Power domination and zero forcing in interated line digraphs 14:15 Joshua Carlson, Throttling for variants of zero forcing

16 Contributed Talks

Contributed Session 1 Monday, July 24, 14:45 – 16:15, Room 282 14:45 Hana Kim, Riordan matrices related to the Mertens function 15:15 Little Hermie Monterde, On the sum of strictly k-zero matrices 15:45 Manami Chatterjee, Inequalities regarding group invertible H matrices Contributed Session 2 Monday, July 24, 14:45 – 16:15, Room 290 14:45 Minerva Catral, Spectral study of {R, s + 1}-potent matrices 15:15 Jillian Glassett, Spectrally Arbitrary Zero-Nonzero Patterns over Rings with Unity 15:45 Xinqi Gong, Singular value decompostion based deep learning architecture for functional motion prediction of super-large protein complexes Contributed Session 3 Monday, July 24, 16:45 – 17:45, Room 282 16:45 Hamide Dogan, Ideals of Lower Triangular Toeplitz Matrices 17:15 Gary Greaves, Equiangular line systems in Euclidean space notfullContributed Session 4 Tuesday, July 25, 10:10 – 11:40, Room 232 10:10 Sivakumar K.C., Singular M-matrices: Some Recent Results 10:40 Hiroshi Kurata, Some Theorems on Core Inverse of Matrices & Core Partial Ordering 11:10 Kensuke Aihara, Numerical study on combining the CGS-type methods and the residual smoothing technique Contributed Session 5 Tuesday, July 25, 10:10 – 12:10, Room 282 10:10 Chunli Deng, Minc-type bound eigenvalue inclusion sets of general product of tensors 10:40 Gennadij Heidel, Second Order Riemannian Methods Low-Rank Tensor Completion 11:10 Jihad Titi, Fast Determination of the Tensorial and Simplicial Bernstein Enclosure 11:40 Konstantin Usevich, Global convergence of Jacobi-type algorithms for symmetric tensor di- agonalization notfullContributed Session 6 Tuesday, July 25, 14:45 – 15:45, Room 274 14:45 Marko Orel, Connections between preserver problems, graph theory, & finite geometry 15:15 Bokhee Im, Approximate Latin squares and triply stochastic cubic tensors Contributed Session 8 Wednesday, July 26, 13:15 – 14:45, Room 290 13:15 Mohammad Adm, Recent Applications of the Cauchon Algorithm to the Totally Nonnegative Matrices 13:45 Projesh Nath Choudhury, Matrices whose hermitian part is positive semidefinite 14:15 Rachel Quinlan, Counting matrices over finite fields Contributed Session 10 Wednesday, July 26, 15:15 – 16:45, Room 290 15:15 Abbas Salemi Parizi, On the convergence rate of the DGMRES method by using the polyno- mial numerical hulls of matrices 15:45 Tianpei Jiang, The operator monotonicity of k-isotropic functions 16:15 Adam Rutkowski, Merging of positive maps: a construction of various classes of positive maps on matrix algebras

17 notfullContributed Session 11 Thursday, July 27, 10:10 – 11:40, Room 290 10:10 Travis Peters, LIGHTS OUT! on Cartesian Products 10:40 Haifeng Li, Principal eigenvectors and spectral radii of uniform hypergraphs 11:10 Enzo Wendler, A generalization of skew adjacency matrices and spectra Contributed Session 12 Thursday, July 27, 16:00 – 17:30, Room 274 16:00 Keiichi Morikuni, Contour integral methods for rectangular eigenproblems 16:30 Simon Telen, Polynomial system solving and numerical linear algebra cfirm17:00 Kenneth Driessel, Schwartz’s Model of Business Cycles Contributed Session 13 Thursday, July 27, 16:00 – 17:30, Room 290 16:30 Evelyn Nitch-Griffin, Backwards Stability of the Schur Canonical Form 17:00 Alicia Roca, On the minimal partial realizations of a sequence of vectors

Poster Session

John Ahn, Christine Alar, Audrey Goodnight, Haley Knox, Casandra Monroe, and Michael Wigal, Ordered Multiplicity Inverse Eigenvalue Problem on Six Vertices: Attainability John Ahn, Christine Alar, Audrey Goodnight, Haley Knox, Casandra Monroe, and Michael Wigal, Ordered Multiplicity Inverse Eigenvalue Problem on Six Vertices: Unattainability Beth Bjorkman, Impact of graph operations on the minimum number of distinct eigenvalues of a graph Joshua Cape, The Two-to-Infinity Norm and Singular Subspace Geometry Daeshik Choi, A partial determinant corresponding to the first partial trace Hana Choi, Positiveness of Geometric Mean Matrices Esther Conrad, Zero Forcing The Sierpinski Graphs Emelie Curl and Derek Young, Generalized Petersen Graphs with maximum nullity equal to zero forcing number Camille Felton, Mariana Harris, Stefan Nelson, and Ian Pelakh, Positivity and Slope Limiters for Locally-Implicit Lax-Wendroff Discontinuous Galerkin Methods Minghao Rostami, Robust linear stability analysis and a new method for computing the action of the matrix exponential Alex Schulte and O’Neill Kingston, Expansion Techniques for Maintaining M(G) = Z(G) Hongmei Yao, Unitary eigenvalues of a general complex tensor

18 Index

P: Plenary Lectures MS: Mini-Symposia C: Contributed Talks Π: Poster Session

Abiad, A., MS-21 Charlier, C., MS-23 Furst, V., MS-24 Adm, M., C8 Chatterjee, M., C1 Futamura, Y., MS-8 Ahn, J., Π Chen, J., MS-17 Gao, T., MS-18 Aihara, K., C4 Chen, Y., MS-3 Gao, W., MS-2 Alar, C., Π Chi, Y., MS-3 Garnett, C., MS-2 Aliabadi, M., MS-2 Chiumiento, E., MS-7 Gavin, B., MS-8 Alqabani, A., MS-23 Choi, D., Π Geh´er,G., MS-7 Altenberg, L., MS-9 Choi, H., Π Ghandehari, M., MS-16 Andrade, E., MS-21 Choi, M., MS-10 Gharakhloo, R., MS-23 Andrews-Larson, C., MS-6 Chruscinski, D., MS-17 Glassett, J., C2 Argerami, M., MS-7 Chu, E., MS-20 Godsil, C., P3 Arino, J., MS-9 Cioaba, S., MS-21 Gong, X., C2 Artzrouni, M., MS-9 Colarusso, M., MS-19 Goodnight, A., Π Austin, A., MS-8 Cole, S., MS-18 Gorodetsky, A., MS-22 Ayati, B., MS-9 Coutinho, G., MS-21 Greaves, G., C3 Bajwa, W., MS-3 Curl, E., Π Guo, K., MS-21 Balan, R., MS-15 Cushing, J., MS-9 G¨uttel,S., P10 Bapat, R., MS-2 Dahl, G., MS-21 Haas, J., MS-15 Barik, S., MS-12 Dasgupta, S., MS-22 Haemers, W., P9 Basor, E., MS-23 De Leenheer, P., MS-9 Hall, T., MS-24 Belton, A., MS-16 De Lima, L., MS-21 Hand, P., MS-3 Bergqvist, G., MS-14 Deaett, L., MS-2 Hansen, F., MS-10 Bhatia, R., P7 Deng, C., C5 Harel, G., MS-6 Bjorkman, B., Π Diao, P., MS-16 Hari, V., MS-8 Blau, H., MS-1 Dmytryshyn, A., MS-11 Harris, M., Π Bockting-Conrad, S., MS-19 Dogan, H., MS-6 Hegde, C., MS-3 Borgioli, F., MS-4 Dogan, H., C3 Heidel, G., C5 Boumal, N., MS-22 Dopico, F., MS-11 Hero, A., MS-16 Bozeman, C., MS-24 Driessel, K., C12 Hiai, F., MS-10 Breen, J., MS-2 Dusel, J., MS-19 Hirasaka, M., MS-1 Brimkov, B., MS-24 Encinas, A., MS-5 Hoppen, C., MS-21 Brualdi, R., MS-2 Esen, O.,¨ MS-20 Hou, J., MS-17 Buckingham, R., MS-23 Fallat, S., MS-16 Huang, P., MS-14 Bueno, M., MS-11 Farenick, D., MS-10 Huang, W., MS-22 Butler, S., MS-24 Feldman, M., MS-9 Huynh, T., MS-18 Camara, C., MS-23 Felton, C., Π Im, B., C6 Camenga, K., MS-14 Ferrero, D., MS-24 Imberti, D., MS-20 Camps, D., MS-8 Ferro, R., MS-23 Iovanov, M., MS-19 Cape, J., Π Fialkow, L., MS-15 Ipsen, I., MS-16 Cardoso, D., MS-21 Figueroa, A., MS-6 Isralowitz, J., MS-23 Carlson, J., MS-24 Flagg, M., MS-24 Ito, M., MS-10 Carmona, A., MS-5 Foucart, S., MS-3 Jain, T., MS-16 Caswell, H., P6 French, C., MS-1 Javadi, H., MS-18 Catral, M., C2 Friedland, S., MS-17 Jiang, T., C10

19 Jim´enez,M., MS-2 Molnar, L., MS-10 Saltenberger, P., MS-11 Jing, Y., MS-20 Monroe, C., Π Sankey, A., MS-1 Johnston, N., MS-17 Mons´o,E., MS-5 Sano, T., MS-10 K.C., S., C4 Monterde, L., C1 Schmidt, L., MS-3 Kalantzis, V., MS-8 Morikuni, K., C12 Schneider, L., MS-19 Kenter, F., MS-2 Moussa, J., MS-13 Schulte, A., Π Kestyn, J., M-13 Murray, K., MS-19 Schulte-Herbr¨uggen,T., MS-17 Khare, A., MS-19 Nakazato, H., MS-14 Serra, J., MS-23 Kim, H., C1 Nasserasr, S., MS-2 Sheng, X., MS-20 Kim, S., MS-10 Nath Choudhury, P., C8 Singh, G., MS-1 Kingston, O., Π Nathanson, M., MS-17 Smigoc,ˇ H., MS-6 Kirkland, S., MS-2 Nelson, S., Π Smigoc,ˇ H., P2 Kittaneh, F., MS-10 Nicolas, C., MS-6 Smith, J., MS-9 Klein, D., MS-5 Nitch-Griffin, E., C13 Song, C., MS-20 Knox, H., Π Nowak, R., MS-3 Song, S., MS-1 Kobal, D., MS-6 Oh, S., MS-21 Soto, R., MS-12 Kolda, T., P4 Oblak, P., MS-2 Stewart, S., MS-6 Komarova, N., MS-9 Onunwor, E., MS-13 Stott, N., MS-16 Kurata, H., C4 Orel, M., C6 Strong, D., MS-6 Kye, S., MS-10 Palencia, C., MS-14 Sumalroj, S., MS-1 Lau, P., MS-14 P´alfia,M., P5 Sun, J., MS-22 Lawson, J., MS-10 Paparella, P., MS-12 Sun, L., MS-20 Lee, J., MS-23 Patton, L., MS-14 Tait, M., MS-21 Lee, M., MS-19 Paulsen, V., P1 Tam, T., MS-7 Li, C., MS-17 Pelakh, I.,Π Tang, W., MS-17 Li, H., C11 Pelejo, D., MS-17 Telen, S., C12 Li, Z., MS-2 Pereira, R., MS-17 Terwillinger, P., MS-1 Liang, J., MS-20 P´erez,J., MS-11 Tien, J., MS-9 Lim, Y., MS-10 Perovi´c,V., MS-11 Tikaradze, A., MS-19 Lin, J., MS-21 Peters, T., C11 Titi, J., C6 Ling, S., MS-18 Pisonero, M., MS-12 Trevisan, V., MS-21 Lins, B., MS-14 Plosker, S., MS-17 Trigueros, M., MS-6 Loewy, R., MS-12 Pogudin, G., MS-9 Usevich, K., C5 Mach, T., MS-8 Polizzi, E., MS-13 Van Barel, M., MS-11 Mackey, S., MS-11 Qi, X., MS-17 van Beeumen, R., MS-8 Maleki, A., MS-3 Quinlan, R., C8 van den Driessche, P., MS-9 Mamart, S., MS-1 Randic, M., MS-5 Van Dooren, P., MS-11 Mansour, H., MS-3 Rault, P., MS-14 Vandebril, R., P11 Marcaida, S., MS-11 Reinhart, C., MS-21 Vander Meulen, K., MS-2 Mariju´an,C., MS-12 Robbiano, M., MS-21 Vandereycken, B., MS-4 Martinez-Rivera, X., MS-2 Robol, L., MS-11 Varela, A., MS-7 McCullough, S., MS-15 Roca, A., C13 Vaswani, N., MS-3 McDonald, J., MS-2 Rostami, M., Π Villar, S., MS-18 Mengi, E., MS-4 Rutkowski, A., C10 Vinzant, C., MS-16 Meyer, S., MS-24 Saab, R., MS-3 Virosztek, D., MS-17 Milliken, E., MS-9 Saad, Y., MS-8 Virtanen, J., MS-23 Mitjana, M., MS-21 Sakurai,T., MS-13 Vogel, J., MS-13 Mixon, D., MS-3 Salemi Parizi, A., C10 Wang, Q., MS-20

20 Ward, R., P8 Williford, J., MS-1 Ye, K., MS-22 Wawro, M., MS-6 Woerdeman, H., MS-15 Young, D., Π Weber, E., MS-15 Wu, Z., MS-9 Zhang, P., MS-10 Wei, K., MS-22 Xu, B., MS-1 Zhang, X., MS-2 Weis, S., MS-17 Yamazaki, T., MS-10 Zhang, T., MS-20 Wendler, E., C11 Yang, Y., MS-5 Zhou, J., MS-5 Wigal, M., Π Yao, H., Π

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ARCADIA CAFÉ 1 FIGHTING BURRITO 6 LITTLE TAIPEI 12 POTBELLY SANDWICH SHOP 16 Specialty coffees, Mexican grill, gourmet Chinese cuisine Hot toasted sandwiches,salads, pastries,soups, sandwiches burritos soups, shakes MEMORIAL UNION BLAZE PIZZA 2 FUZZY’S TACO SHOP 7 FOOD COURT 13 SMOKIN’ OAK Counter-serving pizzeria Baja-style Mexican food WOOD-FIRED PIZZA 17 Chester’s Chicken Wood-fired pizza CAFÉ BEAUDELAIRE 3 INDIAN DELIGHTS CYs & Fries (CLOSED M/W/F) Brazilian fusion cuisine EXPRESS 8 Fresh Burrito Works STARBUCKS 18 Authentic Indian cuisine (CLOSED T/TH) Specialty coffees, pastries CARIBOU COFFEE/ Godfather’s Pizza & sandwiches HUB GRILL & CAFE 4 JEFF’S PIZZA 9 Panda Express Specialty coffee drinks, Pizza, calzones, sandwiches The Dish STOMPING GROUNDS CAFE 19 deli sandwiches, salads European style cafe & soups JIMMY JOHN’S 10 MR. BURRITO 14 Fast, fresh gourmet sandwiches Authentic Mexican food THAI KITCHEN 20 DUNKIN’ DONUTS 5 Thai eatery with noodles, rice Donuts, breakfast JOY’S MONGOLIAN GRILL 11 PIZZA PIT 15 and curry dishes sandwiches & coffee drinks Mongollian and Chinese buffet Pizza, hot sandwiches Science Organizing Committee Local Organizing Committee Leslie Hogben, Iowa State University, Chair Leslie Hogben, Iowa State University, Chair Fan Chung, University of California San Diego Cliff Bergman, Iowa State University Mark Embree, Virginia Tech Steve Butler, Iowa State University Stephen Kirkland, University of Manitoba, Canada Stephen Kirkland, University of Manitoba Wolfgang Kliemann, Iowa State University Wolfgang Kliemann, Iowa State University Bala Rajaratnam, Stanford Ryan Martin, Iowa State University Joachim Rosenthal, University of Zurich, Switzerland Yiu Tung Poon, Iowa State University Peter Semrl, University of Ljubljana, Slovenia Bryan Shader, University of Wyoming Bryan Shader, University of Wyoming Sung-Yell Song, Iowa State University Tatjana Stykel, Universitat Augsburg, Germany Michael Young, Iowa State University Jared Tanner, Oxford, UK Raf Vandebril, KU Leuven, Belgium Xavier Martínez-Rivera, Assistant Conference Director Pauline van den Driessche, University of Victoria, Jephian Chin-Hung Lin, Assistant Conference Director Canada Seth Selken, Conference Assistant, Web Master

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