Erwin Schrödinger International Institute for Mathematical Physics Contents
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Mathematical
2-12 JULY 2011 MATHEMATICAL HOST AND VENUE for Students Jacobs University Scientific Committee Étienne Ghys (École Normale The summer school is based on the park-like campus of Supérieure de Lyon, France), chair Jacobs University, with lecture halls, library, small group study rooms, cafeterias, and recreation facilities within Frances Kirwan (University of Oxford, UK) easy walking distance. Dierk Schleicher (Jacobs University, Germany) Alexei Sossinsky (Moscow University, Russia) Jacobs University is an international, highly selective, Sergei Tabachnikov (Penn State University, USA) residential campus university in the historic Hanseatic Anatoliy Vershik (St. Petersburg State University, Russia) city of Bremen. It features an attractive math program Wendelin Werner (Université Paris-Sud, France) with personal attention to students and their individual interests. Jean-Christophe Yoccoz (Collège de France) Don Zagier (Max Planck-Institute Bonn, Germany; › Home to approximately 1,200 students from over Collège de France) 100 different countries Günter M. Ziegler (Freie Universität Berlin, Germany) › English language university › Committed to excellence in higher education Organizing Committee › Has a special program with fellowships for the most Anke Allner (Universität Hamburg, Germany) talented students in mathematics from all countries Martin Andler (Université Versailles-Saint-Quentin, › Venue of the 50th International Mathematical Olympiad France) (IMO) 2009 Victor Kleptsyn (Université de Rennes, France) Marcel Oliver (Jacobs University, Germany) For more information about the mathematics program Stephanie Schiemann (Freie Universität Berlin, Germany) at Jacobs University, please visit: Dierk Schleicher (Jacobs University, Germany) math.jacobs-university.de Sergei Tabachnikov (Penn State University, USA) at Jacobs University, Bremen The School is an initiative in the framework of the European Campus of Excellence (ECE). -
The Beauty, Power and Future of Mathematics I Am Thrilled and at The
The Beauty, Power and Future of Mathematics I am thrilled and at the same time humble to be honored by the Doctor Honoris Causa of the University Politehnica of Bucharest. Romania is a country with a very excellent tradition of mathematics at the very best. When I was in high school in Hong Kong, I read with care an elementary book by Popa with lucid explanation and colorful illustrations of basic mathematical concepts. During my undergraduate studies at Sir George Williams University in Montreal, a professor introduced me to Barbu’s works on nonlinear differential and integral equations. I should also mention that he introduced me to the book on linear partial differential operators by Hörmander. When I was a graduate student at the University of Toronto working under the supervision of Professor Atkinson, I learned Fredholm operators from him and the works of Foias and Voiculescu from the operator theory group. I was also influenced by the school of harmonic analysts led by E. M. Stein at Princeton. When I was a visiting professor at the University of California at Irvine, I learned from Martin Schechter of the works of Foias on nonlinear partial differential equations. This education path of mine points clearly to the influence of Romanian mathematics on me, the importance of knowing in depth different but related fields and my life‐long works on pseudo‐differential operators and related topics in mathematics and quantum physics. I chose to specialize in mathematics when I was in grade 10 at Kowloon Technical School in Hong Kong dated back to 1967, not least inspired by an inspiring teacher. -
Issue 73 ISSN 1027-488X
NEWSLETTER OF THE EUROPEAN MATHEMATICAL SOCIETY Feature History Interview ERCOM Hedgehogs Richard von Mises Mikhail Gromov IHP p. 11 p. 31 p. 19 p. 35 September 2009 Issue 73 ISSN 1027-488X S E European M M Mathematical E S Society Geometric Mechanics and Symmetry Oxford University Press is pleased to From Finite to Infinite Dimensions announce that all EMS members can benefit from a 20% discount on a large range of our Darryl D. Holm, Tanya Schmah, and Cristina Stoica Mathematics books. A graduate level text based partly on For more information please visit: lectures in geometry, mechanics, and symmetry given at Imperial College www.oup.co.uk/sale/science/ems London, this book links traditional classical mechanics texts and advanced modern mathematical treatments of the FORTHCOMING subject. Differential Equations with Linear 2009 | 460 pp Algebra Paperback | 978-0-19-921291-0 | £29.50 Matthew R. Boelkins, Jack L Goldberg, Hardback | 978-0-19-921290-3 | £65.00 and Merle C. Potter Explores the interplaybetween linear FORTHCOMING algebra and differential equations by Thermoelasticity with Finite Wave examining fundamental problems in elementary differential equations. This Speeds text is accessible to students who have Józef Ignaczak and Martin completed multivariable calculus and is appropriate for Ostoja-Starzewski courses in mathematics and engineering that study Extensively covers the mathematics of systems of differential equations. two leading theories of hyperbolic October 2009 | 464 pp thermoelasticity: the Lord-Shulman Hardback | 978-0-19-538586-1 | £52.00 theory, and the Green-Lindsay theory. Oxford Mathematical Monographs Introduction to Metric and October 2009 | 432 pp Topological Spaces Hardback | 978-0-19-954164-5 | £70.00 Second Edition Wilson A. -
Friedrichs Type Inequalities in Arbitrary Domains
Friedrichs type inequalities in arbitrary domains Andrea Cianchi Vladimir Maz’ya To Ari Laptev on the occasion of his 70th birthday 1 Introduction Almost one century ago, in his paper [8] on boundary value and eigenvalue problems in the elasticity theory of plates, K.Friedrichs showed that, given a bounded open set Ω R2 satisfying a very mild regularity condition on the boundary ∂Ω, there exists a constant⊂ C = C(Ω) such that u 2 Ω C u 2 Ω + u 2 Ω (1.1) k kL ( ) ≤ k∇ kL ( ) k kL (∂ ) for every sufficiently smooth function u : Ω R. Here, 2 Ω stands for the → k · kL (∂ ) L2-norm on ∂Ω with respect to the (n 1)-dimensional Hausdorff measure. As noticed in the same paper, an application of inequality− (1.1) to the first-order derivatives of u yields 2 u 2 Ω C u 2 Ω + u 2 Ω (1.2) k∇ kL ( ) ≤ k∇ kL ( ) k∇ kL (∂ ) for some constant C = C(Ω). Inequality (1.1) can be regarded as a forerunner of inequalities in Sobolev type spaces involving trace norms over the boundary of the underlying domain. The latter play a role in a variety of problems in the theory of partial differential equations, including the analysis of solutions to elliptic equations subject to Robin boundary conditions. Criteria for the validity of inequalities of the form u Lq (Ω) C u L p (Ω) + C u Lr (∂Ω), (1.3) k k ≤ 1 k∇ k 2 k k A. Cianchi: Dipartimento di Matematica e Informatica “U.Dini", Università di Firenze, Viale Mor- gagni 67/a 50134, Firenze (Italy); email: andrea.ciamchi@unifi.it V. -
The Work of Wendelin Werner
The work of Wendelin Werner Charles M. Newman∗ 1. Introduction It is my great pleasure to briefly report on some of Wendelin Werner’s research ac- complishments that have led to his being awarded a Fields Medal at this International Congress of Mathematicians of 2006. There are a number of aspects of Werner’s work that add to my pleasure in this event. One is that he was trained as a probabilist, receiving his Ph.D. in 1993 under the supervision of Jean-François Le Gall in Paris with a dissertation concerning planar Brownian Motion – which, as we shall see, plays a major role in his later work as well. Until now, Probability Theory had not been represented among Fields Medals and so I am enormously pleased to be here to witness a change in that history. I myself was originally trained, not in Probability Theory, but in Mathematical Physics. Werner’s work, together with his collaborators such as Greg Lawler, Oded Schramm and Stas Smirnov, involves applications of Probablity and Conformal Map- ping Theory to fundamental issues in Statistical Physics, as we shall discuss. A second source of pleasure is my belief that this, together with other work of recent years, represents a watershed in the interaction between Mathematics and Physics generally. Namely, mathematicians such as Werner are not only providing rigorous proofs of already existing claims in the Physics literature, but beyond that are provid- ing quite new conceptual understanding of basic phenomena – in this case, a direct geometric picture of the intrinsically random structure of physical systems at their critical points (at least in two dimensions). -
Party Time for Mathematicians in Heidelberg
Mathematical Communities Marjorie Senechal, Editor eidelberg, one of Germany’s ancient places of Party Time HHlearning, is making a new bid for fame with the Heidelberg Laureate Forum (HLF). Each year, two hundred young researchers from all over the world—one for Mathematicians hundred mathematicians and one hundred computer scientists—are selected by application to attend the one- week event, which is usually held in September. The young in Heidelberg scientists attend lectures by preeminent scholars, all of whom are laureates of the Abel Prize (awarded by the OSMO PEKONEN Norwegian Academy of Science and Letters), the Fields Medal (awarded by the International Mathematical Union), the Nevanlinna Prize (awarded by the International Math- ematical Union and the University of Helsinki, Finland), or the Computing Prize and the Turing Prize (both awarded This column is a forum for discussion of mathematical by the Association for Computing Machinery). communities throughout the world, and through all In 2018, for instance, the following eminences appeared as lecturers at the sixth HLF, which I attended as a science time. Our definition of ‘‘mathematical community’’ is journalist: Sir Michael Atiyah and Gregory Margulis (both Abel laureates and Fields medalists); the Abel laureate the broadest: ‘‘schools’’ of mathematics, circles of Srinivasa S. R. Varadhan; the Fields medalists Caucher Bir- kar, Gerd Faltings, Alessio Figalli, Shigefumi Mori, Bào correspondence, mathematical societies, student Chaˆu Ngoˆ, Wendelin Werner, and Efim Zelmanov; Robert organizations, extracurricular educational activities Endre Tarjan and Leslie G. Valiant (who are both Nevan- linna and Turing laureates); the Nevanlinna laureate (math camps, math museums, math clubs), and more. -
Fundamental Concepts of History of Mathematics
RESEARCH PAPER RESEARCH REVIEW International Journal of Multidisciplinary e-ISSN: 2455-3085 | Vol.06 | Iss.07 | July 2021 | pp. 43-59 Double-Blind Peer Reviewed/Refereed Journal Fundamental Concepts of History of Mathematics *Dr. Rupen Chatterjee Department of Mathematics, NabagramHiralal Paul College, Nabagram, Hooghly, West Bengal Pin:712246, India (Affiliated to Calcutta University) Abstract Article Publication The science of structure, discipline, and relationships arose from the first practice of Published Online: 15-Jul-2021 calculating, measuring, and describing the shape of an object. It involves logical reasoning and quantitative computing. And the development of the ideal and the *Author's Correspondence abstraction of the subject has reached an extended level. Beginning in the seventeenth Dr. Rupen Chatterjee century, mathematics was an essential complement to the physical sciences and technologies and, more recently, began to play a similar role in the quantitative aspects Department of Mathematics, of the life sciences. In many cultures influenced by the need for practical study, for NabagramHiralal Paul College, example, the mathematics of trade and agriculture far exceeded calculations. This Nabagram, Hooghly, West Bengal growth was most pronounced in sophisticated societies sufficient to sustain this activity Pin:712246, India (Affiliated to Calcutta University) and to build on the free time of thought and the capacity to build on the successes of previous mathematicians. The field of study known as the history of mathematics is [email protected] practically the study of the source of discovery. Examples of new mathematical developments in mathematical methods and the study of mathematical methods of 10.31305/rrijm.2021.v06.i07.008 identifying the past and to a lesser extent in the modern age and before the spread of knowledge worldwide have appeared in only a few places. -
Mathematical Tripos Part III Lecture Courses in 2013-2014
Mathematical Tripos Part III Lecture Courses in 2013-2014 Department of Pure Mathematics & Mathematical Statistics Department of Applied Mathematics & Theoretical Physics Notes and Disclaimers. • Students may take any combination of lectures that is allowed by the timetable. The examination timetable corresponds to the lecture timetable and it is therefore not possible to take two courses for examination that are lectured in the same timetable slot. There is no requirement that students study only courses offered by one Department. • The code in parentheses after each course name indicates the term of the course (M: Michaelmas; L: Lent; E: Easter), and the number of lectures in the course. Unless indicated otherwise, a 16 lecture course is equivalent to 2 credit units, while a 24 lecture course is equivalent to 3 credit units. Please note that certain courses are non-examinable, and are indicated as such after the title. Some of these courses may be the basis for Part III essays. • At the start of some sections there is a paragraph indicating the desirable previous knowledge for courses in that section. On one hand, such paragraphs are not exhaustive, whilst on the other, not all courses require all the pre-requisite material indicated. However you are strongly recommended to read up on the material with which you are unfamiliar if you intend to take a significant number of courses from a particular section. • The courses described in this document apply only for the academic year 2013-14. Details for subsequent years are often broadly similar, but not necessarily identical. The courses evolve from year to year. -
$ L^ P $ Solvability of the Stationary Stokes Problem on Domains With
Abstract The Dirichlet boundary value problem for the Stokes operator with Lp data in any dimension on domains with conical singularity (not necessary a Lipschitz graph) is considered. We establish the solvability of the problem for all p ∈ (2 − ε, ∞] and also its solvability in C(D) for the data in C(∂D). arXiv:1007.5495v1 [math.AP] 30 Jul 2010 1 Lp solvability of the Stationary Stokes problem on domains with conical singularity in any dimension ∗ Martin Dindos The University of Edinburgh and Maxwell Institute of Mathematical Sciences JCMB, The King’s Buildings Mayfield Road, Edinburgh EH9 3JZ, Scotland [email protected] Vladimir Maz’ya Department of Mathematical Sciences, M&O Building, University of Liverpool, Liverpool L69 7ZL, UK and Department of Mathematics, Link¨oping University, SE-581 83 Link¨oping, Sweden [email protected] In memory of Michael Sh. Birman Keywords: Lam´eand Stokes systems, Lp solvability, Dirichlet problem 1 Introduction In this paper we study the Stokes system (which is the linearized version of the stationary Navier-Stokes system) on a fixed domain D ⊂ Rn, for n ≥ 3. In fact, we establish our result for a both Lam´esystem (ν < 1/2) and the Stokes system (ν = 1/2). We want to consider a classical question of the solvability of the Lp Dirichlet problem on the domain D. Let us recall that the Dirichlet problem for the system (1.1) is Lp solvable on the domain D if for all vector fields f ∈ Lp(∂D) there is a pair of (u, p) (here u : D → Rn, p : D → R) such that − ∆u + ∇p = 0, div u + (1 − 2ν)p =0 in D, (1.1) u ∂D = f almost everywhere, ∗ p u ∈ L (∂D), ∗Mathematics Subject Classifications: 35J57, 35J47 2 and moreover for some C > 0 independent of f the estimate ∗ ku kLp(∂D) ≤ CkfkLp(∂D) holds. -
Curriculum Vitae
Umberto Mosco WPI Harold J. Gay Professor of Mathematics May 18, 2021 Department of Mathematical Sciences Phone: (508) 831-5074, Worcester Polytechnic Institute Fax: (508) 831-5824, Worcester, MA 01609 Email: [email protected] Curriculum Vitae Current position: Harold J. Gay Professor of Mathematics, Worcester Polytechnic Institute, Worcester MA, U.S.A. Languages: English, French, German, Italian (mother language) Specialization: Applied Mathematics Research Interests:: Fractal and Partial Differential Equations, Homog- enization, Finite Elements Methods, Stochastic Optimal Control, Variational Inequalities, Potential Theory, Convex Analysis, Functional Convergence. Twelve Most Relevant Research Articles 1. Time, Space, Similarity. Chapter of the book "New Trends in Differential Equations, Control Theory and Optimization, pp. 261-276, WSPC-World Scientific Publishing Company, Hackenseck, NJ, 2016. 2. Layered fractal fibers and potentials (with M.A.Vivaldi). J. Math. Pures Appl. 103 (2015) pp. 1198-1227. (Received 10.21.2013, Available online 11.4.2014). 3. Vanishing viscosity for fractal sets (with M.A.Vivaldi). Discrete and Con- tinuous Dynamical Systems - Special Volume dedicated to Louis Niren- berg, 28, N. 3, (2010) pp. 1207-1235. 4. Fractal reinforcement of elastic membranes (with M.A.Vivaldi). Arch. Rational Mech. Anal. 194, (2009) pp. 49-74. 5. Gauged Sobolev Inequalities. Applicable Analysis, 86, no. 3 (2007), 367- 402. 6. Invariant field metrics and dynamic scaling on fractals. Phys. Rev. Let- ters, 79, no. 21, Nov. (1997), pp. 4067-4070. 7. Variational fractals. Ann. Scuola Norm. Sup. Pisa Cl. Sci. (4) 25 (1997) No. 3-4, pp. 683-712. 8. A Saint-Venant type principle for Dirichlet forms on discontinuous media (with M. -
500 Years of Mathematics
30TH APRIL 2019 500 Years of Mathematics PROFESSOR CHRISTOPHER BUDD OBE Introduction In the 500th year since the birth of Thomas Gresham in 1519 it is an interesting exercise to ask if I was around then (OK I’m not quite that old) what would I say had happened mathematically in the last 500 years. The answer is not a lot. In Europe almost nothing new had been discovered since the Greeks. The great advances in Arabic mathematics had largely stopped at least 500 years before, and in China before then. Only in India had much been going on, including significant advances in algebra and trigonometry. However, almost none of these discoveries were known to Thomas Gresham’s contemporaries in the West. In contrast the last 500 years have seen an explosion in mathematical discovery, with the pace of discovery increasing in the 21st Century. The start of this rapid acceleration started in Thomas Gresham’s lifetime and has continued almost uninterrupted till the present day. In particular we can see the time of Thomas Gresham as being the birth both of modern algebra and also calculus, both of which dominate modern mathematics. It is thus very fitting that I can give a talk about 500 years of mathematics, as I think we can say with some justification that we are celebrating the 500th anniversary not only of the birth of Thomas Gresham but also of the birth of modern mathematics. In this talk I will try to survey what in my opinion are the really great mathematical achievements of the last 500 years. -
Fall 2008 [Pdf]
Le Bulletin du CRM • crm.math.ca • Automne/Fall 2008 | Volume 14 – No 2 | Le Centre de recherches mathématiques The Fall 2008 Aisenstadt Chairs Four Aisenstadt Chair lecturers will visit the CRM during the 2008-2009 thematic year “Probabilistic Methods in Mathemat- ical Physics.” We report here on the series of lectures of Wendelin Werner (Université Paris-Sud 11) and Andrei Okounkov (Princeton University), both of whom are Fields Medalists, who visited the CRM in August and September 2008 respectively. The other Aisenstadt Chairs will be held by Svante Janson (Uppsala University) and Craig Tracy (University of California at Davis). Wendelin Werner Andrei Okounkov de Yvan Saint-Aubin (Université de Montréal) by John Harnad (Concordia University) Wendelin Werner est un A metaphor from an ancient fragment by Archilochus “The Fox spécialiste de la théo- knows many things but the Hedgehog knows one big thing” rie des probabilités. Il a was used by Isaiah Berlin as title and theme of his essay on Tol- obtenu son doctorat en stoy’s view of history (“. by nature a fox, but believed in be- 1993 sous la direction de ing a hedgehog”) [1]. It is also very suitably applied to styles in Jean-François Le Gall. Il science. In his presentation of the work of Andrei Okounkov est professeur au labo- when he was awarded the Fields medal at the 2006 Interna- ratoire de mathématiques tional Congress of Mathematicians in Madrid, Giovanni Felder à l’Université Paris-Sud said: “Andrei Okounkov’s initial area of research was group XI à Orsay depuis 1997, representation theory, with particular emphasis on combinato- ainsi qu’à l’École nor- rial and asymptotic aspects.