Learning from Fields Medal Winners
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2006 Annual Report
Contents Clay Mathematics Institute 2006 James A. Carlson Letter from the President 2 Recognizing Achievement Fields Medal Winner Terence Tao 3 Persi Diaconis Mathematics & Magic Tricks 4 Annual Meeting Clay Lectures at Cambridge University 6 Researchers, Workshops & Conferences Summary of 2006 Research Activities 8 Profile Interview with Research Fellow Ben Green 10 Davar Khoshnevisan Normal Numbers are Normal 15 Feature Article CMI—Göttingen Library Project: 16 Eugene Chislenko The Felix Klein Protocols Digitized The Klein Protokolle 18 Summer School Arithmetic Geometry at the Mathematisches Institut, Göttingen, Germany 22 Program Overview The Ross Program at Ohio State University 24 PROMYS at Boston University Institute News Awards & Honors 26 Deadlines Nominations, Proposals and Applications 32 Publications Selected Articles by Research Fellows 33 Books & Videos Activities 2007 Institute Calendar 36 2006 Another major change this year concerns the editorial board for the Clay Mathematics Institute Monograph Series, published jointly with the American Mathematical Society. Simon Donaldson and Andrew Wiles will serve as editors-in-chief, while I will serve as managing editor. Associate editors are Brian Conrad, Ingrid Daubechies, Charles Fefferman, János Kollár, Andrei Okounkov, David Morrison, Cliff Taubes, Peter Ozsváth, and Karen Smith. The Monograph Series publishes Letter from the president selected expositions of recent developments, both in emerging areas and in older subjects transformed by new insights or unifying ideas. The next volume in the series will be Ricci Flow and the Poincaré Conjecture, by John Morgan and Gang Tian. Their book will appear in the summer of 2007. In related publishing news, the Institute has had the complete record of the Göttingen seminars of Felix Klein, 1872–1912, digitized and made available on James Carlson. -
Why U.S. Immigration Barriers Matter for the Global Advancement of Science
DISCUSSION PAPER SERIES IZA DP No. 14016 Why U.S. Immigration Barriers Matter for the Global Advancement of Science Ruchir Agarwal Ina Ganguli Patrick Gaulé Geoff Smith JANUARY 2021 DISCUSSION PAPER SERIES IZA DP No. 14016 Why U.S. Immigration Barriers Matter for the Global Advancement of Science Ruchir Agarwal Patrick Gaulé International Monetary Fund University of Bath and IZA Ina Ganguli Geoff Smith University of Massachusetts Amherst University of Bath JANUARY 2021 Any opinions expressed in this paper are those of the author(s) and not those of IZA. Research published in this series may include views on policy, but IZA takes no institutional policy positions. The IZA research network is committed to the IZA Guiding Principles of Research Integrity. The IZA Institute of Labor Economics is an independent economic research institute that conducts research in labor economics and offers evidence-based policy advice on labor market issues. Supported by the Deutsche Post Foundation, IZA runs the world’s largest network of economists, whose research aims to provide answers to the global labor market challenges of our time. Our key objective is to build bridges between academic research, policymakers and society. IZA Discussion Papers often represent preliminary work and are circulated to encourage discussion. Citation of such a paper should account for its provisional character. A revised version may be available directly from the author. ISSN: 2365-9793 IZA – Institute of Labor Economics Schaumburg-Lippe-Straße 5–9 Phone: +49-228-3894-0 53113 Bonn, Germany Email: [email protected] www.iza.org IZA DP No. 14016 JANUARY 2021 ABSTRACT Why U.S. -
The Work of Grigory Perelman
The work of Grigory Perelman John Lott Grigory Perelman has been awarded the Fields Medal for his contributions to geom- etry and his revolutionary insights into the analytical and geometric structure of the Ricci flow. Perelman was born in 1966 and received his doctorate from St. Petersburg State University. He quickly became renowned for his work in Riemannian geometry and Alexandrov geometry, the latter being a form of Riemannian geometry for metric spaces. Some of Perelman’s results in Alexandrov geometry are summarized in his 1994 ICM talk [20]. We state one of his results in Riemannian geometry. In a short and striking article, Perelman proved the so-called Soul Conjecture. Soul Conjecture (conjectured by Cheeger–Gromoll [2] in 1972, proved by Perelman [19] in 1994). Let M be a complete connected noncompact Riemannian manifold with nonnegative sectional curvatures. If there is a point where all of the sectional curvatures are positive then M is diffeomorphic to Euclidean space. In the 1990s, Perelman shifted the focus of his research to the Ricci flow and its applications to the geometrization of three-dimensional manifolds. In three preprints [21], [22], [23] posted on the arXiv in 2002–2003, Perelman presented proofs of the Poincaré conjecture and the geometrization conjecture. The Poincaré conjecture dates back to 1904 [24]. The version stated by Poincaré is equivalent to the following. Poincaré conjecture. A simply-connected closed (= compact boundaryless) smooth 3-dimensional manifold is diffeomorphic to the 3-sphere. Thurston’s geometrization conjecture is a far-reaching generalization of the Poin- caré conjecture. It says that any closed orientable 3-dimensional manifold can be canonically cut along 2-spheres and 2-tori into “geometric pieces” [27]. -
Press Release
Press release 13 August 2014 Two Fields Medals 2014 awarded to ERC laureates The 2014 Fields Medals were awarded today to four outstanding mathematicians, of whom two are grantees of the European Research Council (ERC): Prof. Artur Avila (Brazil-France), an ERC Starting grant holder since 2010, and Prof. Martin Hairer (Austria) has been selected for funding under an ERC Consolidator grant in 2013. They received the prize respectively for their work on dynamical systems and probability, and on stochastic analysis. The other two laureates are Prof. Manjul Barghava (Canada-US) and Prof. Maryam Mirzakhani (Iran). The Medals were announced at the International Congress of Mathematicians (ICM) taking place from 13 – 21 August in Seoul, South Korea. On the occasion of the announcement, ERC President Prof. Jean-Pierre Bourguignon, a mathematician himself, said: “On behalf of the ERC Scientific Council, I would like to congratulate warmly all four Fields Medallists for their outstanding contributions to the field of mathematics. My special congratulations go to Artur Avila and Martin Hairer, who are both brilliant scientists supported by the ERC. We are happy to see that their remarkable talent in the endless frontiers of science has been recognised. The Fields Medals awarded today are also a sign that the ERC continues to identity and fund the most promising researchers across Europe; this is true not only in mathematics but in all scientific disciplines.” EU Commissioner for Research, Innovation and Science, Máire Geoghegan-Quinn, said: “I would like to congratulate the four laureates of the Fields Medal announced today. The Fields Medal, the highest international distinction for young mathematicians, is a well- deserved honour for hardworking and creative young researchers who push the boundaries of knowledge. -
Read Press Release
The Work of Artur Avila Artur Avila has made outstanding contributions to dynamical systems, analysis, and other areas, in many cases proving decisive results that solved long-standing open problems. A native of Brazil who spends part of his time there and part in France, he combines the strong mathematical cultures and traditions of both countries. Nearly all his work has been done through collaborations with some 30 mathematicians around the world. To these collaborations Avila brings formidable technical power, the ingenuity and tenacity of a master problem-solver, and an unerring sense for deep and significant questions. Avila's achievements are many and span a broad range of topics; here we focus on only a few highlights. One of his early significant results closes a chapter on a long story that started in the 1970s. At that time, physicists, most notably Mitchell Feigenbaum, began trying to understand how chaos can arise out of very simple systems. Some of the systems they looked at were based on iterating a mathematical rule such as 3x(1−x). Starting with a given point, one can watch the trajectory of the point under repeated applications of the rule; one can think of the rule as moving the starting point around over time. For some maps, the trajectories eventually settle into stable orbits, while for other maps the trajectories become chaotic. Out of the drive to understand such phenomena grew the subject of discrete dynamical systems, to which scores of mathematicians contributed in the ensuing decades. Among the central aims was to develop ways to predict long-time behavior. -
Alexander Grothendieck Heng Li
Alexander Grothendieck Heng Li Alexander Grothendieck's life Alexander Grothendieck was a German born French mathematician. Grothendieck was born on March 28, 1928 in Berlin. His parents were Johanna Grothendieck and Alexander Schapiro. When he was five years old, Hitler became the Chancellor of the German Reich, and called to boycott all Jewish businesses, and ordered civil servants who were not of the Aryan race to retire. Grothendieck's father was a Russian Jew and at that time, he used the name Tanaroff to hide his Jewish Identity. Even with a Russian name it is still too dangerous for Jewish people to stay in Berlin. In May 1933, his father, Alexander Schapiro, left to Paris because the rise of Nazism. In December of the same year, his mother left Grothendieck with a foster family Heydorns in Hamburg, and joined Schapiro in Paris. While Alexander Grothendieck was with his foster family, Grothendieck's parents went to Spain and partici- pated in the Spanish Civil War. After the Spanish Civil War, Johanna(Hanka) Grothendieck and Alexander Schapiro returned to France. In Hamburg, Alexander Grothendieck attended to elementary schools and stud- ied at the Gymnasium (a secondary school). The Heydorns family are a part of the resistance against Hitler; they consider that it was too dangerous for young Grothendieck to stay in Germany, so in 1939 the Heydorns sent him to France to join his parents. However, because of the outbreak of World War II all German in France were required by law to be sent to special internment camps. Grothendieck and his parents were arrested and sent to the camp, but fortunately young Alexander Grothendieck was allowed to continue his education at a village school that was a few miles away from the camp. -
The Top Mathematics Award
Fields told me and which I later verified in Sweden, namely, that Nobel hated the mathematician Mittag- Leffler and that mathematics would not be one of the do- mains in which the Nobel prizes would The Top Mathematics be available." Award Whatever the reason, Nobel had lit- tle esteem for mathematics. He was Florin Diacuy a practical man who ignored basic re- search. He never understood its impor- tance and long term consequences. But Fields did, and he meant to do his best John Charles Fields to promote it. Fields was born in Hamilton, Ontario in 1863. At the age of 21, he graduated from the University of Toronto Fields Medal with a B.A. in mathematics. Three years later, he fin- ished his Ph.D. at Johns Hopkins University and was then There is no Nobel Prize for mathematics. Its top award, appointed professor at Allegheny College in Pennsylvania, the Fields Medal, bears the name of a Canadian. where he taught from 1889 to 1892. But soon his dream In 1896, the Swedish inventor Al- of pursuing research faded away. North America was not fred Nobel died rich and famous. His ready to fund novel ideas in science. Then, an opportunity will provided for the establishment of to leave for Europe arose. a prize fund. Starting in 1901 the For the next 10 years, Fields studied in Paris and Berlin annual interest was awarded yearly with some of the best mathematicians of his time. Af- for the most important contributions ter feeling accomplished, he returned home|his country to physics, chemistry, physiology or needed him. -
Ngô B O Châu
Ngô Bảo Châu The University of Chicago Department of Mathematics 5734 S. University Avenue Chicago, IL 60637-1514, USA (773) 702-7385 [email protected] http://math.uchicago.edu/ ngo EDUCATION PhD Mathematics 1992-1997 Universit´eParis Sud BS Mathematics and Computer Sciences 1990-1992 ENS Paris, Universit´ePierre et Maris Curie APPOINTMENTS Professor of Mathematics 2010-present University of Chicago Scientific Director 2011-present Vietnam Institute for Advanced Study in Mathematics Long-term Member 2007-2010 Institute for Advanced Study, Princeton Professor 2004-2007 Universit´eParis Sud CNRS Fellow 1998-2004 Universit´eParis Nord OUTREACH C¡nh cûa mở rëng 2012-2016 Edition House Tr´ Book series edited in collaboration with Phan Vi»t. This book series contain 25 items translated from English and French. Ai và Ky ở xù sở cõa nhúng con sè tàng h¼nh 2013 Edition House Nh¢ Nam Math adventure book written in collaboration with Nguy¹n Phương V«n, more than 50K copies sold. Cùng Vi¸t Hi¸n Ph¡p 2012 Website Collection of journal papers on the process of amending Vietnam constitution in 2013. Work in collaboration with Đàm Thanh Sơn, Nguy¹n Anh Tu§n and Tr¦n Ki¶n. Học Th¸ Nào 2013 Website Collection of papers on education. Work in collaboration with Nguy¹n Phương V«n and L¶ Quý Hi¶n. Vietnam Education Dialogue 2014 Independent Research Groups on Higher Education Members of this independent research group include Đỗ Quèc Anh, Tr¦n Ngọc Anh, Vũ Thành Tự Anh, Ph¤m Hùng Hi»p, Ph¤m Ngọc Thng, Nguy¹n Phương V«n. -
Awards of ICCM 2013 by the Editors
Awards of ICCM 2013 by the Editors academies of France, Sweden and the United States. He is a recipient of the Fields Medal (1986), the Crafoord Prize Morningside Medal of Mathematics in Mathematics (1994), the King Faisal International Prize Selection Committee for Science (2006), and the Shaw Prize in Mathematical The Morningside Medal of Mathematics Selection Sciences (2009). Committee comprises a panel of world renowned mathematicians and is chaired by Professor Shing-Tung Björn Engquist Yau. A nomination committee of around 50 mathemati- Professor Engquist is the Computational and Applied cians from around the world nominates candidates based Mathematics Chair Professor at the University of Texas at on their research, qualifications, and curriculum vitae. Austin. His recent work includes homogenization theory, The Selection Committee reviews these nominations and multi-scale methods, and fast algorithms for wave recommends up to two recipients for the Morningside propagation. He is a member of the Royal Swedish Gold Medal of Mathematics, up to two recipients for the Morningside Gold Medal of Applied Mathematics, and up to four recipients for the Morningside Silver Medal of Mathematics. The Selection Committee members, with the exception of the committee chair, are all non-Chinese to ensure the independence, impartiality and integrity of the awards decision. Members of the 2013 Morningside Medal of Mathe- matics Selection Committee are: Richard E. Borcherds Professor Borcherds is Professor of Mathematics at the University of California at Berkeley. His research in- terests include Lie algebras, vertex algebras, and auto- morphic forms. He is best known for his work connecting the theory of finite groups with other areas in mathe- matics. -
Rev. Acad. Colomb. Cienc. Ex. Fis. Nat. 41(160):399-400, Julio-Septiembre De 2017
Rev. Acad. Colomb. Cienc. Ex. Fis. Nat. 41(160):399-400, julio-septiembre de 2017 400 ISSN 0370-3908 eISSN 2382-4980 Academia Colombiana de Ciencias Exactas, Físicas y Naturales Vol. 41 • Número 160 • Págs. 269-412 • Julio - Septiembre de 2017 · Bogotá - Colombia Comité editorial Editora Elizabeth Castañeda, Ph. D. Instituto Nacional de Salud, Bogotá, Colombia Editores asociados Ciencias Biomédicas Ciencias Físicas Luis Fernando García, M.D., M.Sc. Pedro Fernández de Córdoba, Ph. D. Universidad de Antioquia, Medellin, Colombia Universidad Politécnica de Valencia, España Gustavo Adolfo Vallejo, Ph. D. Diógenes Campos Romero, Dr. rer. nat. Universidad del Tolima, Ibagué, Colombia Universidad Nacional de Colombia, Luis Caraballo, Ph. D. Bogotá, Colombia Universidad de Cartagena, Cartagena, Colombia Román Eduardo Castañeda, Dr. rer. nat. Juanita Ángel, Ph. D. Universidad Nacional, Medellín, Colombia Pontificia Universidad Javeriana, María Elena Gómez, Doctor Bogotá, Colombia Universidad del Valle, Cali Manuel Franco, Ph. D. Gabriel Téllez, Ph. D. Pontificia Universidad Javeriana, Bogotá, Colombia Universidad de los Andes, Bogotá, Colombia Alberto Gómez, Ph. D. Jairo Roa-Rojas, Ph. D. Pontificia Universidad Javeriana, Universidad Nacional de Colombia, Bogotá, Colombia Bogotá, Colombia John Mario González, Ph. D. Ángela Stella Camacho Beltrán, Dr. rer. nat. Universidad de los Andes, Bogotá, Colombia Universidad de los Andes, Bogotá, Colombia Ciencias del Comportamiento Hernando Ariza Calderón, Doctor Guillermo Páramo, M.Sc. Universidad del Quindío, Armenia, Colombia Universidad Central, Bogotá, Colombia Edgar González, Ph. D. Rubén Ardila, Ph. D. Pontificia Universidad Javeriana, Universidad Nacional de Colombia, Bogotá, Colombia Bogotá, Colombia Guillermo González, Ph. D. Fernando Marmolejo-Ramos, Ph. D. Universidad Industrial de Santander, Universidad de Adelaide, Adelaide, Australia Bucaramanga, Colombia Ciencias Naturales Ligia Sierra, Ph. -
Januar 2007 FØRSTE DOKTORGRAD I
INFOMATJanuar 2007 Kjære leser! FØRSTE DOKTORGRAD I INFOMAT ønsker alle et godt nytt år. MATEMATIKKDIDAKTIKK Det ble aldri noe desember- nummer. Redaktørens harddisk VED HiA hadde et fatalt sammenbrudd like før Jul og slike hendelser er altså nok til at enkelte ting stopper opp. Våre utmerkede dataingeniører ved Matematisk institutt i Oslo klarte å redde ut alle dataene, og undertegnede lærte en lekse om back-up. Science Magazine har kåret beviset for Poincaré-formod- ningen til årets vitenskapelige gjennombrudd i 2006. Aldri før har en matematikkbegiven- het blitt denne æren til del. Men Foto: Torstein Øen hyggelig er det og det er et vik- tig signal om at det ikke bare er Den 27. november disputerte indiske Sharada Gade for doktorgraden anvendt vitenskap som er be- i matematikk-didaktikk ved Høgskolen i Agder. Dette er den første tydningsfullt for samfunnet. matematikkdidaktikk-doktoren høgskolen har kreert etter at studiet ble HiA har fått kreert sin første opprettet i 2002. doktor i matematikkdidaktikk og er på full fart mot universi- Dermed er et viktig krav for å ta steget opp i universitetsklassen opp- tetsstatus! Vi gratulerer både fylt. HiA må levere doktorgrader i andre fag enn nordisk og det sørget høgskolen og den nye doktoren Sharada Gade for. Hennes avhandling dreier seg om viktigheten av Sharada Gade. mening, mål og lærerens rolle i matematikkundervisningen. hilsen Arne B. INFOMAT kommer ut med 11 nummer i året og gis ut av Norsk Matematisk Forening. Deadline for neste utgave er alltid den 10. i neste måned. Stoff til INFOMAT sendes til infomat at math.ntnu.no Foreningen har hjemmeside http://www.matematikkforeningen.no/INFOMAT Ansvarlig redaktør er Arne B. -
International Congress of Mathematicians
International Congress of Mathematicians Hyderabad, August 19–27, 2010 Abstracts Plenary Lectures Invited Lectures Panel Discussions Editor Rajendra Bhatia Co-Editors Arup Pal G. Rangarajan V. Srinivas M. Vanninathan Technical Editor Pablo Gastesi Contents Plenary Lectures ................................................... .. 1 Emmy Noether Lecture................................. ................ 17 Abel Lecture........................................ .................... 18 Invited Lectures ................................................... ... 19 Section 1: Logic and Foundations ....................... .............. 21 Section 2: Algebra................................... ................. 23 Section 3: Number Theory.............................. .............. 27 Section 4: Algebraic and Complex Geometry............... ........... 32 Section 5: Geometry.................................. ................ 39 Section 6: Topology.................................. ................. 46 Section 7: Lie Theory and Generalizations............... .............. 52 Section 8: Analysis.................................. .................. 57 Section 9: Functional Analysis and Applications......... .............. 62 Section 10: Dynamical Systems and Ordinary Differential Equations . 66 Section 11: Partial Differential Equations.............. ................. 71 Section 12: Mathematical Physics ...................... ................ 77 Section 13: Probability and Statistics................. .................. 82 Section 14: Combinatorics...........................