Fields Medal: Feature Nobel Prize for Young Mathematicians
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
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. -
Arithmetic Equivalence and Isospectrality
ARITHMETIC EQUIVALENCE AND ISOSPECTRALITY ANDREW V.SUTHERLAND ABSTRACT. In these lecture notes we give an introduction to the theory of arithmetic equivalence, a notion originally introduced in a number theoretic setting to refer to number fields with the same zeta function. Gassmann established a direct relationship between arithmetic equivalence and a purely group theoretic notion of equivalence that has since been exploited in several other areas of mathematics, most notably in the spectral theory of Riemannian manifolds by Sunada. We will explicate these results and discuss some applications and generalizations. 1. AN INTRODUCTION TO ARITHMETIC EQUIVALENCE AND ISOSPECTRALITY Let K be a number field (a finite extension of Q), and let OK be its ring of integers (the integral closure of Z in K). The Dedekind zeta function of K is defined by the Dirichlet series X s Y s 1 ζK (s) := N(I)− = (1 N(p)− )− I OK p − ⊆ where the sum ranges over nonzero OK -ideals, the product ranges over nonzero prime ideals, and N(I) := [OK : I] is the absolute norm. For K = Q the Dedekind zeta function ζQ(s) is simply the : P s Riemann zeta function ζ(s) = n 1 n− . As with the Riemann zeta function, the Dirichlet series (and corresponding Euler product) defining≥ the Dedekind zeta function converges absolutely and uniformly to a nonzero holomorphic function on Re(s) > 1, and ζK (s) extends to a meromorphic function on C and satisfies a functional equation, as shown by Hecke [25]. The Dedekind zeta function encodes many features of the number field K: it has a simple pole at s = 1 whose residue is intimately related to several invariants of K, including its class number, and as with the Riemann zeta function, the zeros of ζK (s) are intimately related to the distribution of prime ideals in OK . -
Homogeneous Flows, Moduli Spaces and Arithmetic
CLAY MATHEMATICS INSTITUTE SUMMER SCHOOL 2007 Homogeneous Flows, Moduli Spaces and Arithmetic at the Centro di Ricerca Matematica Designed for graduate students and mathematicians within Ennio De Giorgi, Pisa, Italy five years of their PhD, the program is an introduction to the theory of flows on homogeneous spaces, moduli spaces and their many applications. These flows give concrete examples of dynamical systems with highly interesting behavior and a rich and powerful theory. They are also a source of many interesting problems and conjectures. Furthermore, understanding the dynamics of such a concrete system lends to numerous applications in number theory and geometry regarding equidistributions, diophantine approximations, rational billiards and automorphic forms. The school will consist of three weeks of foundational courses Photo: Peter Adams and one week of mini-courses focusing on more advanced topics. June 11th to July 6th 2007 Lecturers to include: Organizing Committee Nalini Anantharaman, Artur Avila, Manfred Einsiedler, Alex Eskin, Manfred Einsiedler, David Ellwood, Alex Eskin, Dmitry Kleinbock, Elon Svetlana Katok, Dmitry Kleinbock, Elon Lindenstrauss, Shahar Mozes, Lindenstrauss, Gregory Margulis, Stefano Marmi, Peter Sarnak, Hee Oh, Akshay Venkatesh, Jean-Christophe Yoccoz Jean-Christophe Yoccoz, Don Zagier Foundational Courses Graduate Postdoctoral Funding Unipotent flows and applications Funding is available to graduate students and postdoctoral fellows (within 5 Alex Eskin & Dmitry Kleinbock years of their PhD). Standard -
Diagonalizable Flows on Locally Homogeneous Spaces and Number
Diagonalizable flows on locally homogeneous spaces and number theory Manfred Einsiedler and Elon Lindenstrauss∗ Abstract.We discuss dynamical properties of actions of diagonalizable groups on locally homogeneous spaces, particularly their invariant measures, and present some number theoretic and spectral applications. Entropy plays a key role in the study of theses invariant measures and in the applications. Mathematics Subject Classification (2000). 37D40, 37A45, 11J13, 81Q50 Keywords. invariant measures, locally homogeneous spaces, Littlewood’s conjecture, quantum unique ergodicity, distribution of periodic orbits, ideal classes, entropy. 1. Introduction Flows on locally homogeneous spaces are a special kind of dynamical systems. The ergodic theory and dynamics of these flows are very rich and interesting, and their study has a long and distinguished history. What is more, this study has found numerous applications throughout mathematics. The spaces we consider are of the form Γ\G where G is a locally compact group and Γ a discrete subgroup of G. Typically one takes G to be either a Lie group, a linear algebraic group over a local field, or a product of such. Any subgroup H < G acts on Γ\G and this action is precisely the type of action we will consider here. One of the most important examples which features in numerous number theoretical applications is the space PGL(n, Z)\ PGL(n, R) which can be identified with the space of lattices in Rn up to homothety. Part of the beauty of the subject is that the study of very concrete actions can have meaningful implications. For example, in the late 1980s G. -
FIELDS MEDAL for Mathematical Efforts R
Recognizing the Real and the Potential: FIELDS MEDAL for Mathematical Efforts R Fields Medal recipients since inception Year Winners 1936 Lars Valerian Ahlfors (Harvard University) (April 18, 1907 – October 11, 1996) Jesse Douglas (Massachusetts Institute of Technology) (July 3, 1897 – September 7, 1965) 1950 Atle Selberg (Institute for Advanced Study, Princeton) (June 14, 1917 – August 6, 2007) 1954 Kunihiko Kodaira (Princeton University) (March 16, 1915 – July 26, 1997) 1962 John Willard Milnor (Princeton University) (born February 20, 1931) The Fields Medal 1966 Paul Joseph Cohen (Stanford University) (April 2, 1934 – March 23, 2007) Stephen Smale (University of California, Berkeley) (born July 15, 1930) is awarded 1970 Heisuke Hironaka (Harvard University) (born April 9, 1931) every four years 1974 David Bryant Mumford (Harvard University) (born June 11, 1937) 1978 Charles Louis Fefferman (Princeton University) (born April 18, 1949) on the occasion of the Daniel G. Quillen (Massachusetts Institute of Technology) (June 22, 1940 – April 30, 2011) International Congress 1982 William P. Thurston (Princeton University) (October 30, 1946 – August 21, 2012) Shing-Tung Yau (Institute for Advanced Study, Princeton) (born April 4, 1949) of Mathematicians 1986 Gerd Faltings (Princeton University) (born July 28, 1954) to recognize Michael Freedman (University of California, San Diego) (born April 21, 1951) 1990 Vaughan Jones (University of California, Berkeley) (born December 31, 1952) outstanding Edward Witten (Institute for Advanced Study, -
What's Inside
Newsletter A publication of the Controlled Release Society Volume 32 • Number 1 • 2015 What’s Inside 42nd CRS Annual Meeting & Exposition pH-Responsive Fluorescence Polymer Probe for Tumor pH Targeting In Situ-Gelling Hydrogels for Ophthalmic Drug Delivery Using a Microinjection Device Interview with Paolo Colombo Patent Watch Robert Langer Awarded the Queen Elizabeth Prize for Engineering Newsletter Charles Frey Vol. 32 • No. 1 • 2015 Editor Table of Contents From the Editor .................................................................................................................. 2 From the President ............................................................................................................ 3 Interview Steven Giannos An Interview with Paolo Colombo from University of Parma .............................................. 4 Editor 42nd CRS Annual Meeting & Exposition .......................................................................... 6 What’s on Board Access the Future of Delivery Science and Technology with Key CRS Resources .............. 9 Scientifically Speaking pH-Responsive Fluorescence Polymer Probe for Tumor pH Targeting ............................. 10 Arlene McDowell Editor In Situ-Gelling Hydrogels for Ophthalmic Drug Delivery Using a Microinjection Device ........................................................................................................ 12 Patent Watch ................................................................................................................... 14 Special -
Higher Algebraic K-Theory I
1 Higher algebraic ~theory: I , * ,; Daniel Quillen , ;,'. ··The·purpose of..thispaper.. is.to..... develop.a.higher. X..,theory. fpJ;' EiddUiy!!. categQtl~ ... __ with euct sequences which extends the ell:isting theory of ths Grothsndieck group in a natural wll7. To describe' the approach taken here, let 10\ be an additive category = embedded as a full SUbcategory of an abelian category A, and assume M is closed under , = = extensions in A. Then one can form a new category Q(M) having the same objects as ')0\ , = =, = but :in which a morphism from 101 ' to 10\ is taken to be an isomorphism of MI with a subquotient M,IM of M, where MoC 101, are aubobjects of M such that 101 and MlM, o 0 are objects of ~. Assuming 'the isomorphism classes of objects of ~ form a set, the, cstegory Q(M)= has a classifying space llQ(M)= determined up to homotopy equivalence. One can show that the fundamental group of this classifying spacs is canonically isomor- phic to the Grothendieck group of ~ which motivates dsfining a ssquenoe of X-groups by the formula It is ths goal of the present paper to show that this definition leads to an interesting theory. The first part pf the paper is concerned with the general theory of these X-groups. Section 1 contains various tools for working .~th the classifying specs of a small category. It concludes ~~th an important result which identifies ·the homotopy-theoretic fibre of the map of classifying spaces induced by a.functor. In X-theory this is used to obtain long exsct sequences of X-groups from the exact homotopy sequence of a map. -
Occasion of Receiving the Seki-Takakazu Prize
特集:日本数学会関孝和賞受賞 On the occasion of receiving the Seki-Takakazu Prize Jean-Pierre Bourguignon, the director of IHÉS A brief introduction to the Institut des Hautes Études Scientifiques The Institut des Hautes Études Scientifiques (IHÉS) was founded in 1958 by Léon MOTCHANE, an industrialist with a passion for mathematics, whose ambition was to create a research centre in Europe, counterpart to the renowned Institute for Advanced Study (IAS), Princeton, United States. IHÉS became a foundation acknowledged in the public interest in 1981. Like its model, IHÉS has a small number of Permanent Professors (5 presently), and hosts every year some 250 visitors coming from all around the world. A Scientific Council consisting of the Director, the Permanent Professors, the Léon Motchane professor and an equal number of external members is in charge of defining the scientific strategy of the Institute. The foundation is managed by an 18 member international Board of Directors selected for their expertise in science or in management. The French Minister of Research or their representative and the General Director of CNRS are members of the Board. IHÉS accounts are audited and certified by an international accountancy firm, Deloitte, Touche & Tomatsu. Its resources come from many different sources: half of its budget is provided by a contract with the French government, but institutions from some 10 countries, companies, foundations provide the other half, together with the income from the endowment of the Institute. Some 50 years after its creation, the high quality of its Permanent Professors and of its selected visiting researchers has established IHÉS as a research institute of world stature. -
Density of Algebraic Points on Noetherian Varieties 3
DENSITY OF ALGEBRAIC POINTS ON NOETHERIAN VARIETIES GAL BINYAMINI Abstract. Let Ω ⊂ Rn be a relatively compact domain. A finite collection of real-valued functions on Ω is called a Noetherian chain if the partial derivatives of each function are expressible as polynomials in the functions. A Noether- ian function is a polynomial combination of elements of a Noetherian chain. We introduce Noetherian parameters (degrees, size of the coefficients) which measure the complexity of a Noetherian chain. Our main result is an explicit form of the Pila-Wilkie theorem for sets defined using Noetherian equalities and inequalities: for any ε> 0, the number of points of height H in the tran- scendental part of the set is at most C ·Hε where C can be explicitly estimated from the Noetherian parameters and ε. We show that many functions of interest in arithmetic geometry fall within the Noetherian class, including elliptic and abelian functions, modular func- tions and universal covers of compact Riemann surfaces, Jacobi theta func- tions, periods of algebraic integrals, and the uniformizing map of the Siegel modular variety Ag . We thus effectivize the (geometric side of) Pila-Zannier strategy for unlikely intersections in those instances that involve only compact domains. 1. Introduction 1.1. The (real) Noetherian class. Let ΩR ⊂ Rn be a bounded domain, and n denote by x := (x1,...,xn) a system of coordinates on R . A collection of analytic ℓ functions φ := (φ1,...,φℓ): Ω¯ R → R is called a (complex) real Noetherian chain if it satisfies an overdetermined system of algebraic partial differential equations, i =1,...,ℓ ∂φi = Pi,j (x, φ), (1) ∂xj j =1,...,n where P are polynomials. -
Interview with Andrei Okounkov “I Try Hard to Learn to See the World The
Interview with Andrei Okounkov “I try hard to learn to see the world the way physicists do” Born in Moscow in 1969, he obtained his doctorate in his native city. He is currently professor of Representation Theory at Princeton University (New Jersey). His work has led to applications in a variety of fields in both mathematics and physics. Thanks to this versatility, Okounkov was chosen as a researcher for the Sloan (2000) and Packard (2001) Foundations, and in 2004 he was awarded the prestigious European Mathematical Society Prize. This might be a very standard question, but making it is mandatory for us: How do you feel, being the winner of a Fields Medal? How were you told and what did you do at that moment? Out of a whole spectrum of thoughts that I had in the time since receiving the phone call from the President of the IMU, two are especially recurrent. First, this is a great honour and it means a great responsibility. At times, I feel overwhelmed by both. Second, I can't wait to share this recognition with my friends and collaborators. Mathematics is both a personal and collective endeavour: while ideas are born in individual heads, the exchange of ideas is just as important for progress. I was very fortunate to work with many brilliant mathematician who also became my close personal friends. This is our joint success. Your work, as far as I understand, connects several areas of mathematics. Why is this important? When this connections arise, are they a surprise, or you suspect them somehow? Any mathematical proof should involve a new ingredient, something which was not already present in the statement of the problem. -
The History of the Abel Prize and the Honorary Abel Prize the History of the Abel Prize
The History of the Abel Prize and the Honorary Abel Prize The History of the Abel Prize Arild Stubhaug On the bicentennial of Niels Henrik Abel’s birth in 2002, the Norwegian Govern- ment decided to establish a memorial fund of NOK 200 million. The chief purpose of the fund was to lay the financial groundwork for an annual international prize of NOK 6 million to one or more mathematicians for outstanding scientific work. The prize was awarded for the first time in 2003. That is the history in brief of the Abel Prize as we know it today. Behind this government decision to commemorate and honor the country’s great mathematician, however, lies a more than hundred year old wish and a short and intense period of activity. Volumes of Abel’s collected works were published in 1839 and 1881. The first was edited by Bernt Michael Holmboe (Abel’s teacher), the second by Sophus Lie and Ludvig Sylow. Both editions were paid for with public funds and published to honor the famous scientist. The first time that there was a discussion in a broader context about honoring Niels Henrik Abel’s memory, was at the meeting of Scan- dinavian natural scientists in Norway’s capital in 1886. These meetings of natural scientists, which were held alternately in each of the Scandinavian capitals (with the exception of the very first meeting in 1839, which took place in Gothenburg, Swe- den), were the most important fora for Scandinavian natural scientists. The meeting in 1886 in Oslo (called Christiania at the time) was the 13th in the series. -
Program of the Sessions Washington, District of Columbia, January 5–8, 2009
Program of the Sessions Washington, District of Columbia, January 5–8, 2009 MAA Short Course on Data Mining and New Saturday, January 3 Trends in Teaching Statistics (Part I) 8:00 AM –4:00PM Delaware Suite A, Lobby Level, Marriott Organizer: Richard D. De Veaux, Williams College AMS Short Course on Quantum Computation 8:00AM Registration and Quantum Information (Part I) 9:00AM Math is music—statistics is literature. (5) What are the challenges of teaching 8:00 AM –5:00PM Virginia Suite A, statistics, and why is it different from Lobby Level, Marriott mathematics? Richard D. De Veaux, Williams College Organizer: Samuel J. Lomonaco, 10:30AM Break. University of Maryland Baltimore County 10:45AM What does the introductory course look (6) like in 2009? How technology has 8:00AM Registration. changed what we do in introductory 9:00AM A Rosetta Stone for quantum computing. statistics for the non-math/science (1) Samuel Lomonaco,Universityof student. Maryland Baltimore County Richard D. De Veaux, Williams College 10:15AM Break. 1:00PM What does the math-based introductory (7) course look like in 2009? How do 10:45AM Quantum algorithms. we merge mathematical concepts (2) Peter Shor, Massachusetts Institute of into the introductory course for the Technology math/science student? How does 2:00PM Concentration of measure effects in statistical programming fit in? (3) quantum information. Richard D. De Veaux, Williams College Patrick Hayden, McGill University 2:30PM Break. 3:15PM Break. 2:45PM Introduction to Modeling. Regression and 3:45PM Quantum error correction and fault (8) ANOVA. Overview: How much to teach (4) tolerance.