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Tarjan Transcript Final with Timestamps
A.M. Turing Award Oral History Interview with Robert (Bob) Endre Tarjan by Roy Levin San Mateo, California July 12, 2017 Levin: My name is Roy Levin. Today is July 12th, 2017, and I’m in San Mateo, California at the home of Robert Tarjan, where I’ll be interviewing him for the ACM Turing Award Winners project. Good afternoon, Bob, and thanks for spending the time to talk to me today. Tarjan: You’re welcome. Levin: I’d like to start by talking about your early technical interests and where they came from. When do you first recall being interested in what we might call technical things? Tarjan: Well, the first thing I would say in that direction is my mom took me to the public library in Pomona, where I grew up, which opened up a huge world to me. I started reading science fiction books and stories. Originally, I wanted to be the first person on Mars, that was what I was thinking, and I got interested in astronomy, started reading a lot of science stuff. I got to junior high school and I had an amazing math teacher. His name was Mr. Wall. I had him two years, in the eighth and ninth grade. He was teaching the New Math to us before there was such a thing as “New Math.” He taught us Peano’s axioms and things like that. It was a wonderful thing for a kid like me who was really excited about science and mathematics and so on. The other thing that happened was I discovered Scientific American in the public library and started reading Martin Gardner’s columns on mathematical games and was completely fascinated. -
Information and Announcements Mathematics Prizes Awarded At
Information and Announcements Mathematics Prizes Awarded at ICM 2014 The International Congress of Mathematicians (ICM) is held once in four years under the auspices of the International Mathematical Union (IMU). The ICM is the largest, and the most prestigious, meeting of the mathematics community. During the ICM, the Fields Medal, the Nevanlinna Prize, the Gauss Prize, the Chern Medal and the Leelavati Prize are awarded. The Fields Medals are awarded to mathematicians under the age of 40 to recognize existing outstanding mathematical work and for the promise of future achievement. A maximum of four Fields Medals are awarded during an ICM. The Nevanlinna Prize is awarded for outstanding contributions to mathematical aspects of information sciences; this awardee is also under the age of 40. The Gauss Prize is given for mathematical research which has made a big impact outside mathematics – in industry or technology, etc. The Chern Medal is awarded to a person whose mathematical accomplishments deserve the highest level of recognition from the mathematical community. The Leelavati Prize is sponsored by Infosys and is a recognition of an individual’s extraordinary achievements in popularizing among the public at large, mathematics, as an intellectual pursuit which plays a crucial role in everyday life. The 27th ICM was held in Seoul, South Korea during August 13–21, 2014. Fields Medals The following four mathematicians were awarded the Fields Medal in 2014. 1. Artur Avila, “for his profound contributions to dynamical systems theory, which have changed the face of the field, using the powerful idea of renormalization as a unifying principle”. Work of Artur Avila (born 29th June 1979): Artur Avila’s outstanding work on dynamical systems, and analysis has made him a leader in the field. -
NEWSLETTER Issue: 491 - November 2020
i “NLMS_491” — 2020/10/28 — 11:56 — page 1 — #1 i i i NEWSLETTER Issue: 491 - November 2020 COXETER THE ROYAL INSTITUTION FRIEZES AND PROBABILIST’S CHRISTMAS GEOMETRY URN LECTURER i i i i i “NLMS_491” — 2020/10/28 — 11:56 — page 2 — #2 i i i EDITOR-IN-CHIEF COPYRIGHT NOTICE Eleanor Lingham (Sheeld Hallam University) News items and notices in the Newsletter may [email protected] be freely used elsewhere unless otherwise stated, although attribution is requested when reproducing whole articles. Contributions to EDITORIAL BOARD the Newsletter are made under a non-exclusive June Barrow-Green (Open University) licence; please contact the author or David Chillingworth (University of Southampton) photographer for the rights to reproduce. Jessica Enright (University of Glasgow) The LMS cannot accept responsibility for the Jonathan Fraser (University of St Andrews) accuracy of information in the Newsletter. Views Jelena Grbic´ (University of Southampton) expressed do not necessarily represent the Cathy Hobbs (UWE) views or policy of the Editorial Team or London Christopher Hollings (Oxford) Mathematical Society. Stephen Huggett Adam Johansen (University of Warwick) ISSN: 2516-3841 (Print) Susan Oakes (London Mathematical Society) ISSN: 2516-385X (Online) Andrew Wade (Durham University) DOI: 10.1112/NLMS Mike Whittaker (University of Glasgow) Early Career Content Editor: Jelena Grbic´ NEWSLETTER WEBSITE News Editor: Susan Oakes Reviews Editor: Christopher Hollings The Newsletter is freely available electronically at lms.ac.uk/publications/lms-newsletter. CORRESPONDENTS AND STAFF MEMBERSHIP LMS/EMS Correspondent: David Chillingworth Joining the LMS is a straightforward process. For Policy Digest: John Johnston membership details see lms.ac.uk/membership. -
“To Be a Good Mathematician, You Need Inner Voice” ”Огонёкъ” Met with Yakov Sinai, One of the World’S Most Renowned Mathematicians
“To be a good mathematician, you need inner voice” ”ОгонёкЪ” met with Yakov Sinai, one of the world’s most renowned mathematicians. As the new year begins, Russia intensifies the preparations for the International Congress of Mathematicians (ICM 2022), the main mathematical event of the near future. 1966 was the last time we welcomed the crème de la crème of mathematics in Moscow. “Огонёк” met with Yakov Sinai, one of the world’s top mathematicians who spoke at ICM more than once, and found out what he thinks about order and chaos in the modern world.1 Committed to science. Yakov Sinai's close-up. One of the most eminent mathematicians of our time, Yakov Sinai has spent most of his life studying order and chaos, a research endeavor at the junction of probability theory, dynamical systems theory, and mathematical physics. Born into a family of Moscow scientists on September 21, 1935, Yakov Sinai graduated from the department of Mechanics and Mathematics (‘Mekhmat’) of Moscow State University in 1957. Andrey Kolmogorov’s most famous student, Sinai contributed to a wealth of mathematical discoveries that bear his and his teacher’s names, such as Kolmogorov-Sinai entropy, Sinai’s billiards, Sinai’s random walk, and more. From 1998 to 2002, he chaired the Fields Committee which awards one of the world’s most prestigious medals every four years. Yakov Sinai is a winner of nearly all coveted mathematical distinctions: the Abel Prize (an equivalent of the Nobel Prize for mathematicians), the Kolmogorov Medal, the Moscow Mathematical Society Award, the Boltzmann Medal, the Dirac Medal, the Dannie Heineman Prize, the Wolf Prize, the Jürgen Moser Prize, the Henri Poincaré Prize, and more. -
After Ramanujan Left Us– a Stock-Taking Exercise S
Ref: after-ramanujanls.tex Ver. Ref.: : 20200426a After Ramanujan left us– a stock-taking exercise S. Parthasarathy [email protected] 1 Remembering a giant This article is a sequel to my article on Ramanujan [14]. April 2020 will mark the death centenary of the legendary Indian mathe- matician – Srinivasa Ramanujan (22 December 1887 – 26 April 1920). There will be celebrations of course, but one way to honour Ramanujan would be to do some introspection and stock-taking. This is a short survey of notable achievements and contributions to mathematics by Indian institutions and by Indian mathematicians (born in India) and in the last hundred years since Ramanujan left us. It would be highly unfair to compare the achievements of an individual, Ramanujan, during his short life span (32 years), with the achievements of an entire nation over a century. We should also consider the context in which Ramanujan lived, and the most unfavourable and discouraging situation in which he grew up. We will still attempt a stock-taking, to record how far we have moved after Ramanujan left us. Note : The table below should not be used to compare the relative impor- tance or significance of the contributions listed there. It is impossible to list out the entire galaxy of mathematicians for a whole century. The table below may seem incomplete and may contain some inad- vertant errors. If you notice any major lacunae or omissions, or if you have any suggestions, please let me know at [email protected]. 1 April 1920 – April 2020 Year Name/instit. Topic Recognition 1 1949 Dattatreya Kaprekar constant, Ramchandra Kaprekar number Kaprekar [1] [2] 2 1968 P.C. -
Newsletter · Thursday 18Th
KEEP UPDATED NEWSLETTER · THURSDAY 18TH ICIAM'S JOURNEY Like its predecessors, a congress such as ICIAM 2019 would have never been countries like South Africa. ICIAM possible without the organization and supervision of the International Council has the ability to promote for Industrial and Applied Mathematics (ICIAM), a formal entity created in 1990 mathematics all over the world". to supervise these quadrennial meetings. From Paris 1987 to Valencia 2019 many things have changed, and not just in the field of Industrial and Applied The current and future presidents Mathematics. of the Council agree in that ICIAM 2019 in Valencia has been an The original societies that founded ICIAM (GAMM, IMA, SIAM, and SMAI) are absolute success. "In my opinion now surrounded by many other members from around the world and the everything has worked very well Council has expanded its activities significantly since 2004. despite the huge number of participants", says Esteban. "The The Council is responsible for choosing the venue and the 27 invited speakers, conferences are of high quality and which are chosen with a diverse criteria, not only mathematically and in general, especially in the main geographicall, but also with respect to academic vs. industrial work, gender or conferences —invited and prizes— type of academic institution. Furthermore, it is also responsible for overseeing the lecturers have made a real the selection of the five ICIAM prizes —Collatz, Lagrange, Maxwell, Su Buchin, Ya-Xiang Yuan recalls attending ICIAM in effort to present their results in a and Pioneer— awarded every congress. its 1995 edition in Hamburg. "We were comprehensible and pleasant way only 20 Chinese and now we're like 300, for a great variety of participants as well as create a database with all so the same thing can happen to working in very diverse areas ". -
Program of the Sessions San Diego, California, January 9–12, 2013
Program of the Sessions San Diego, California, January 9–12, 2013 AMS Short Course on Random Matrices, Part Monday, January 7 I MAA Short Course on Conceptual Climate Models, Part I 9:00 AM –3:45PM Room 4, Upper Level, San Diego Convention Center 8:30 AM –5:30PM Room 5B, Upper Level, San Diego Convention Center Organizer: Van Vu,YaleUniversity Organizers: Esther Widiasih,University of Arizona 8:00AM Registration outside Room 5A, SDCC Mary Lou Zeeman,Bowdoin upper level. College 9:00AM Random Matrices: The Universality James Walsh, Oberlin (5) phenomenon for Wigner ensemble. College Preliminary report. 7:30AM Registration outside Room 5A, SDCC Terence Tao, University of California Los upper level. Angles 8:30AM Zero-dimensional energy balance models. 10:45AM Universality of random matrices and (1) Hans Kaper, Georgetown University (6) Dyson Brownian Motion. Preliminary 10:30AM Hands-on Session: Dynamics of energy report. (2) balance models, I. Laszlo Erdos, LMU, Munich Anna Barry*, Institute for Math and Its Applications, and Samantha 2:30PM Free probability and Random matrices. Oestreicher*, University of Minnesota (7) Preliminary report. Alice Guionnet, Massachusetts Institute 2:00PM One-dimensional energy balance models. of Technology (3) Hans Kaper, Georgetown University 4:00PM Hands-on Session: Dynamics of energy NSF-EHR Grant Proposal Writing Workshop (4) balance models, II. Anna Barry*, Institute for Math and Its Applications, and Samantha 3:00 PM –6:00PM Marina Ballroom Oestreicher*, University of Minnesota F, 3rd Floor, Marriott The time limit for each AMS contributed paper in the sessions meeting will be found in Volume 34, Issue 1 of Abstracts is ten minutes. -
Mathematical Sciences 2016
Infosys Prize Mathematical Sciences 2016 Number theory is the branch Ancient civilizations developed intricate of mathematics that deals with methods of counting. Sumerians, Mayans properties of whole numbers or and Greeks all show evidence of elaborate positive integers. mathematical calculations. Akshay Venkatesh Professor, Department of Mathematics, Stanford University, USA • B.Sc. in Mathematics from The University of Western Australia, Perth, Australia • Ph.D. in Mathematics from Princeton University, USA Numbers are Prof. Akshay Venkatesh is a very broad mathematician everything who has worked at the highest level in number theory, arithmetic geometry, topology, automorphic forms and Number theorists are particularly interested in ergodic theory. He is almost unique in his ability to fuse hyperbolic ‘tilings’. These ‘tiles’ carry a great deal of information that are significant in algebraic and analytic ideas to solve concrete and hard number theory. For example they are very problems in number theory. In addition, Venkatesh’s work on the interested in the characteristic frequencies of cohomology of arithmetic groups the tiles. These are the frequencies the tiles studies the shape of these tiles and would vibrate at, if they were used as drums. “I think there’s a lot of math in the world that’s not connects it with other areas of math. at university. Pure math is only one part of math but math is used in a lot of other subjects and I think that’s just as interesting. So learn as much as you can, about all the subjects around math and then see what strikes you as the most interesting.” Prof. -
2004 Research Fellows
I Institute News 2004 Research Fellows On February 23, 2004, the Clay Mathematics Institute announced the appointment of four Research Fellows: Ciprian Manolescu and Maryam Mirzakhani of Harvard University, and András Vasy and Akshay Venkatesh of MIT. These outstanding mathematicians were selected for their research achievements and their potential to make signifi cant future contributions. Ci ian Man lescu 1 a nati e R mania is c m letin his h at Ha a ni Ciprian Manolescu pr o (b. 978), v of o , o p g P .D. rv rd U - versity under the direction of Peter B. Kronheimer. In his undergraduate thesis he gave an elegant new construction of Seiberg-Witten Floer homology, and in his Ph.D. thesis he gave a remarkable gluing formula for the Bauer-Furuta invariants of four-manifolds. His research interests span the areas of gauge theory, low-dimensional topology, symplectic geometry and algebraic topology. Manolescu will begin his four-year appointment as a Research Fellow at Princeton University beginning July 1, 2004. Maryam Mirzakhani Maryam Mirzakhani (b. 1977), a native of Iran, is completing her Ph.D. at Harvard under the direction of Curtis T. McMullen. In her thesis she showed how to compute the Weil- Petersson volume of the moduli space of bordered Riemann surfaces. Her research interests include Teichmuller theory, hyperbolic geometry, ergodic theory and symplectic geometry. As a high school student, Mirzakhani entered and won the International Mathematical Olympiad on two occasions (in 1994 and 1995). Mirzakhani will conduct her research at Princeton University at the start of her four-year appointment as a Research Fellow beginning July 1, 2004. -
Mathematical Finance SIAM Books General and Recreational Maths
Mathematics Pure Mathematics Applied Mathematics Statistics and Probability Mathematical Finance SIAM books General and Recreational Maths www.cambridge.org/mathematics 2007 Contents Highlights – SIAM Books Analysis and Probability 1 Cambridge University Press is delighted to announce Discrete Mathematics and a new arrangement with the Society of Industrial Foundations 2 and Applied Mathematics (SIAM), which means that Geometry and Topology 3 outside North America, and some parts of Asia, SIAM books will be available directly from Cambridge Algebra and Number Theory 6 University Press. If you are unsure what this means Computational Science 8 for you, please contact your local Cambridge office Dynamical Systems, Mechanics (details of these can be found on the inside back cover and Modelling 9 of this catalogue) or bookseller. Mathematical Physics and Biology 11 This catalogue contains only a selection of these Statistics, Applied Probability and books. However, you can browse all the SIAM titles Optimization 13 currently available from Cambridge (with many more Mathematical Finance 16 to come!) by visiting our web page: Classics in Mathematical Finance 17 www.cambridge.org/siam Computer Science 18 Cambridge University Press is also pleased to offer the SIAM Books 20 30% Members’ Discount on SIAM books. General and Recreational Maths 23 SIAM membership details can be obtained from www.siam.org/membership/ Author and Title Index 25 www.cambridge.org/mathematics This catalogue contains a selection of our most recent publishing in this area. Please visit our website for a full and searchable listing of all our titles in print and also an extensive range of news, features and resources. -
Mathematics People
Mathematics People Akshay Venkatesh was born in New Delhi in 1981 but Venkatesh Awarded 2008 was raised in Perth, Australia. He showed his brillance in SASTRA Ramanujan Prize mathematics very early and was awarded the Woods Me- morial Prize in 1997, when he finished his undergraduate Akshay Venkatesh of Stanford University has been studies at the University of Western Australia. He did his awarded the 2008 SASTRA Ramanujan Prize. This annual doctoral studies at Princeton under Peter Sarnak, complet- prize is given for outstanding contributions to areas of ing his Ph.D. in 2002. He was C.L.E. Moore Instructor at the mathematics influenced by the Indian genius Srinivasa Massachusetts Institute of Technology for two years and Ramanujan. The age limit for the prize has been set at was selected as a Clay Research Fellow in 2004. He served thirty-two, because Ramanujan achieved so much in his as associate professor at the Courant Institute of Math- brief life of thirty-two years. The prize carries a cash award ematical Sciences at New York University and received the of US$10,000. Salem Prize and a Packard Fellowship in 2007. He is now professor of mathematics at Stanford University. The 2008 SASTRA Prize Citation reads as follows: “Ak- The 2008 SASTRA Ramanujan Prize Committee con- shay Venkatesh is awarded the 2008 SASTRA Ramanujan sisted of Krishnaswami Alladi (chair), Manjul Bhargava, Prize for his phenomenal contributions to a wide variety Bruce Berndt, Jonathan Borwein, Stephen Milne, Kannan of areas in mathematics, including number theory, auto- Soundararajan, and Michel Waldschmidt. Previous winners morphic forms, representation theory, locally symmetric of the SASTRA Ramanujan Prize are Manjul Bhargava and spaces, and ergodic theory, by himself and in collabora- Kannan Soundararajan (2005), Terence Tao (2006), and tion with several mathematicians. -
AN13 and CT13 Abstracts
AN13 and CT13 Abstracts Abstracts are printed as submitted by the authors. Society for Industrial and Applied Mathematics 3600 Market Street, 6th Floor Philadelphia, PA 19104-2688 USA Telephone: +1-215-382-9800 Fax: +1-215-386-7999 Conference E-mail: [email protected] Conference web: www.siam.org/meetings/ Membership and Customer Service: 800-447-7426 (US & Canada) or +1-215-382-9800 (worldwide) 2 2013 SIAM Annual Meeting • SIAM Conference on Control & Its Applications Table of Contents Annual Meeting (AN13) Abstracts ...............................................3 Control & Its Applications (CT13) .............................................127 SIAM Presents Since 2008, SIAM has recorded many Invited Lectures, Prize Lectures, and selected Minisymposia from various conferences. These are available by visiting SIAM Presents (http://www.siam.org/meetings/presents.php). 2013 SIAM Annual Meeting • SIAM Conference on Control & Its Applications 3 AN13 Abstracts 4 AN13 Abstracts IC1 system including cars, buses, pedestrians, ants and molecu- Social Networks as Information Filters lar motors, which are considered as ”self-driven particles”. We recently call this interdisciplinary research on jamming Social networks, especially online social networks, are of self-driven particles as ”jamology”. This is based on driven by information sharing. But just how much informa- mathematical physics, and and includes engineering appli- tion sharing is influenced by social networks? A large-scale cations as well. In the talk, starting from the backgroud experiment measured the effect of the social network on the of this research, simple mathematical models, such as the quantity and diversity of information being shared within asymmetric simple exclusion process and the Burgers equa- Facebook. While strong ties were found to be individu- tion, are introduced as basis of all kinds of traffic flow.