A B C D E 1 2 Visitors Supported by MRI 3 2017-2018 4 5 Seminars 6 Name Seminar Talk Title Date of Visit Home Institution Arrangements with group actions and 7 Christin Bibby Algebraic Geometry representation stability 10/30/17-11/1/17 University of Michigan 8 Roi Docampo Algebraic Geometry Differentials on the arc space 10/16/17-10/19/17 University of Oklahoma 9 Christopher Manon Algebraic Geometry Problems with Khovanskii bases 11/6/17-11/7/17 University of Kentucky Arithmetic Representations of Fundamental 10 Daniel Litt Algebraic Geometry Groups 11/13/17-11/14/17 Columbia University Interpolating between the Batyrev-Manin and 11 Matthew Satriano Algebraic Geometry Malle Conjectures 12/2/17-12/9/17 University of Waterloo 12 Nicola Tarasca Algebraic Geometry Hyperelliptic loci in moduli spaces of curves 2/18/18-2/21/18 Rutgers University Homogeneous vector bundles on abelian 13 Michel Brion Algebraic Geometry varieties via representation theory 4/15/18-4/21/18 Institut Fourier 14 Fourier Decay of Singular Measures, Salem Sets, 15 Kyle Hambrook Analysis and Operator Theory and Metric Diophantine Approximation 9/27/17-10/1/17 University of Rochester Spectral instabilities of Schrödinger operators 16 Petr Siegl Analysis and Operator Theory with complex potentials 10/16/17-10/23/17 University of Bern Comparing the degrees of unconstrained and 17 Dany Leviatan Analysis and Operator Theory constrained approximation by polynomials 5/15/18-5/18/18 Tel Aviv University 18 Gerald Dunne Analysis and Operator Theory 5/8/18-5/11/18 University of Connecticut 19 Biological architecture: the search for geometric 20 Erik Taylor Applied Math patterns in normal and pathological tissues 8/23/17-8/27/17 Boston University Transit times and mean ages for non- autonomous and autonomous compartmental 21 Ying Wang Applied Math systems modeling the terrestrial carbon cycle 10/25/17-10/28/17 University of Oklahoma Integrating diverse analyses reveals a convergent design principle of B cell 22 Tongli Zhang Applied Math differentiation 12/7/17-12/8/17 University of Cincinnati 23 Thomas Strohmer Applied Math 1/31/18-2/2/18 UC Davis 24 Xingfu Zou Applied Math 4/19/18-4/21/18 University of Western Ontario 25 A B C D E 26 Bhargav Narayanan Combinatorics Diffusion on Graphs 10/18/17-10/20/17 Rutgers University 27 Eric Foxall Combinatorics The compulsive gambler with allowances 11/1/17-11/5/17 University of Alberta On largest eigenvalues of bounded degree 28 Mustazee Rahman Combinatorics graphs 11/15/17-11/18/17 MIT 29 Kyle Luh Combinatorics Embedding Large Graphs in Random Graphs 12/6/17-12/8/17 Harvard 30 Oanh Nguyen Combinatorics Roots of random functions 3/27/18-3/29/18 Princeton University 31 Matthew Junge Combinatorics Chase-Escape 4/25/18-4/27/18 Duke University 32 33 William Heinzer Commutative Algebra Intersections of Regular Local Rings of Dimension 10/8/17-10/10/17 Purdue University California State University - 34 Jesse Elliott Commutative Algebra Closure Operations on Ideals and Submodules 10/21/17-10/24/17 Channel Islands Transference of ring-theoretic properties in D+M 35 Jason Boynton Commutative Algebra (and generalizations) 2/11/18-2/13/18 North Dakota State University Tight closure from the point-of-view of 36 Hans Schoutens Commutative Algebra difference closure 3/16/18-3/19/18 CUNY 37 Bruce Olberding Commutative Algebra Local rings as points in topological spaces 3/16/18-3/20/18 New Mexico State University Factorization in Polynomial Rings with Zero 38 Ranthony Edmonds Commutative Algebra Divisors 4/15/18-4/17/18 University of Iowa Some new constructions of spectral spaces and 39 Marco Fontana Commutative Algebra the Smyth powerdomain theory 4/19/18-4/25/18 University of Rome III 40 On symmetry of complete locally conformally flat metrics on canonical domains of the round 41 Zheng-Chao Han Differential Geometry sphere with constant Q-curvature 11/8/17-11/9/17 Rutgers University Geometry of harmonic maps into singular 42 Brian Freidin Differential Geometry spaces 10/30/17-11/6/17 Brown University On the geometric meaning of some quantities 43 Zhongmin Shen Differential Geometry of Finsler metrics 11/16/2017 IUPUI Some results on strongly pseudoconvex complex 44 Chunping Zhong Differential Geometry Finsler metrics 11/16/2017 Xiamen University 45 Peng Lu Differential Geometry Solitons and ancient solutions in Ricci flow 3/19/18-3/21/18 University of Oregon 46 Jie Qing Differential Geometry On hypersurfaces in Hyperbolic Space 2/19/18-2/21/18 UC Santa Cruz 47 Divergent trajectories in arithmetic 48 Nattalie Tamam Ergodic Theory homogeneou spaces of rational rank two 10/1/17-12/12/17 Tel Aviv University 49 Adam Kanigowski Ergodic Theory Disjointness properties of some parabolic flows 10/25/17-10/26/17 Penn State University A B C D E Cohomology of smooth abelian group actions 50 Kurt Vinhage Ergodic Theory and applications of exotic topological groups 11/15/17-11/16/17 University of Chicago Badly approximable points on manifolds and 51 Lei Yang Ergodic Theory unipotent orbits in homogeneous spaces 1/27/18-2/3/18 Sichuan University The automorphism group of a zero entropy 52 Van Cyr Ergodic Theory symbolic system 2/21/18-2/22/18 Bucknell University Lee-Yang zeros for the Cayley Tree and 53 Roland Roeder Ergodic Theory expanding maps of the circle 3/1/2018 IUPUI On the relationship between entropy and 54 Bryce Weaver Ergodic Theory periodic orbits 3/8/2018 Xavier University Periodic point growth for C^2 maps of the two 55 Yun Yung Ergodic Theory sphere 3/22/2018 CUNY A classification of intermediate β- 56 Tony Samuel Ergodic Theory transformations 4/18/18-4/21/18 Cal State Poly San Luis Obispo Unique Equilibrium States for Geodesic Flows on 57 Lien-Yung Kao Ergodic Theory Surfaces without Focal Points 5/30/18-6/1/18 University of Chicago 58 Geometry, Combinatorics, and Pattern avoidance and fiber bundle structures 59 Edward Richmond Integrable Systmes on Schubert varieties 9/27/17-9/29/17 Oklahoma State University Geometry, Combinatorics, and 60 Tair Akhmejanov Integrable Systmes Affine Growth Diagrams 10/4/17-10/6/17 Cornell University Geometry, Combinatorics, and Combinatorics of Lusztig's t-analogue of weight 61 Cristian Lenart Integrable Systmes multiplicity 10/18/17-10/21/17 SUNY at Albany Geometry, Combinatorics, and 62 Daniel Corey Integrable Systmes Initial degenerations of Grassmannians 1/7/18-1/12/18 Yale University Geometry, Combinatorics, and 63 Anna Weigandt Integrable Systmes Prism Tableaux and Alternating Sign Matrices 1/31/18-2/2/18 UIUC Geometry, Combinatorics, and 64 Chris Fraser Integrable Systmes Webs, dimers, and total positivity 2/14/18-2/16/18 IUPUI Geometry, Combinatorics, and 65 Martha Precup Integrable Systmes The cohomology of abelian Hessenberg varieties 3/29/18-3/30/18 Northwestern Geometry, Combinatorics, and Geometry and maximum likelihood estimation 66 Kaie Kubjas Integrable Systmes of the binary latent class model 4/25/18-4/27/18 Aalto University/MIT 67 Algebra versus regularity for group actions on 68 Thomas Koberda Geometric Group Theory one-manifolds 10/2/17-10/6/17 University of Virginia 69 Marc Pengitore Geometric Group Theory Translation-like actions of nilpotent groups 10/16/17-10/20/17 Purdue University 70 Kevin Schreve Geometric Group Theory Action dimension and L2-cohomology 11/15/17-11/19/17 University of Michigan A B C D E 71 Sahana Balasubramanya Geometric Group Theory Acylindrical group actions on quasi-trees 11/2/2017 Vanderbilt University Geometrical finiteness and Veech subgroups of 72 Matt Durham Geometric Group Theory mapping class groups 11/29/17-12/2/17 Yale 73 David Constantine Geometric Group Theory Marked length rigidity for Fuchsian buildings 1/15/18-1/20/18 Weslyan University 74 Thomas Farrell Geometric Group Theory Bundles with negatively curved fibers 1/23/18-2/7/18 Binghamton University 75 Christoforos Neofytidis Geometric Group Theory Aspherical circle bundles and a problem of Hopf 2/4/18-2/7/18 University Geneva Geometric structures on surfaces with a 76 Lorenzo Ruffoni Geometric Group Theory maximal number of symmetries 2/21/18-2/23/18 Yale University 77 78 Phillip Jedlovec Homotopy Theory The generalized homology of BU 2k 11/1/17-11/3/17 University of Notre Dame 79 Eva Belmont Homotopy Theory Localizing the E 2 page of the Adams spectral 10/25/17-10/27/17 MIT Applications of homological algebra to 80 Bob Bruner Homotopy Theory homotopy 11/8/17-11/9/17 Wayne State The homology of algrebras over the spectral Lie 81 Jens Kjaer Homotopy Theory operad 11/15/17-11/17/17 Notre Dame Hurewicz Images of Real Johnson-Wilson 82 Guchuan Li Homotopy Theory Theories and a recomputation of ER (2)∗RP ∞ 11/27/17-12/1/17 Northwestern 83 Peter Haine Homotopy Theory Monodromy & Stratified Homotopy Theory 12/6/17-12/8/17 MIT 84 Ozgyr Bayindir Homotopy Theory Topological Equivalences of E ∞ DGAs 1/17/18-1/19/18 UIC 85 Nima Rasekh Homotopy Theory A theory of Elementary Higher Toposes 1/31/18-2/2/18 UIUC 86 Berardo Villarreal Homotopy Theory Classifying Spaces for Commutativity 2/21/18-2/23/18 IUPUI Descent Theory and The Local Joyal Model 87 Nicholas Meadows Homotopy Theory Structure 4/2/18-4/4/18 Western Ontario 88 K-Theory and Motivic Homotopy 89 Elden Elmanto Theory Infinite Loop Spaces in Algebraic Geometry 10/3/17-10/5/17 Northwestern University K-Theory and Motivic Homotopy 90 James Quigley Theory The motivic Mahowald invariant 10/18/17-10/20/17 Notre Dame K-Theory and Motivic Homotopy A triangulated approach to the Bloch-Beilinson National Autonomous 91 Jose Pablo Pelaez Theory filtration 11/16/17-11/18/17 University of Mexico K-Theory and Motivic Homotopy 92 Niranjan Ramachandran Theory Gerbes and algebraic cycles 3/22/18-3/23/18 University of Maryland K-Theory and Motivic Homotopy 93 Ravindra Girivaru Theory Lifting classes in K 0 and Chow groups.