Current Seminars
updated 12/5/ 2001
Week of December 4-7
Department Colloquium
Topic: TBA
Presenter: Sergiu Klainerman, Princeton University
Date: Wednesday, December 5, 2001, Time: 4:30 p.m., Location: Fine Hall 314
Ergodic Theory and Statistical Mechanics Seminar
Topic: Central limit theorem for some models of random walks in random enviroment and model of directed polymers
Presenter: Robert A. Minlos, Institute for Information Transmission Problems, Moscow
Date: Thursday, December 6, 2001, Time: 2:00 p.m., Location: Fine 224
Coverings of 3-Manifolds Seminar
Topic: Universal covering spaces of closed 3-manifolds Part II
Presenter: Valentin Poenaru, Université de Paris-Sud (Orsay)
Date: Thursday, December 6, 2001, Time: 3:00 p.m., Location: Fine Hall 1201
Discrete Mathematics Seminar
Topic: Some Algebraic Constructions of Hypergraphs and Their Applications
Presenter: Felix Lazebnik, University of Delaware
Date: Thursday, December 6, 2001, Time: 4:00 p.m., Location: Fine Hall 224
Topology Seminar
Topic: Periodic Floer homology
Presenter: Michael Hutchings, Institute for Advanced Study and Berkeley University
Date: Thursday, December 6, 2001, Time: 4:00 p.m., Location: Fine Hall 314
Princeton/IAS Number Theory Seminar
Topic: On mu-Invariants of Elliptic Curves over Q
Presenter: Mak Trifkovic, Harvard University
Date: Thursday, December 6, 2001, Time: 4:30 p.m., Location: IAS SH-101
Abstract: The talk will survey some recent work on the Iwasawa mu-invariants of p-Selmer groups of elliptic curves relative to the cyclotomic Z_p-tower over Q. The guiding conjecture in the field is due to Ralph Greenberg, and asserts that any elliptic curve over Q is isogenous to one with mu-invariant zero. I will talk about what is known about this conjecture, both by way of proof and by way of computational verification, and will present some new examples of curves with mu=0.
Geometric Analysis Seminar
Topic: Effective Schottky problem
Presenter: Samuel Grushevsky, Harvard University
Date: Friday, December 7, 2001, Time: 3:00 p.m., Location: Fine Hall 314
Week of December 10-14
Analysis Seminar
Topic: Estimates and asymptotics of eigenfunctions
Presenter: Steve Zelditch, Johns Hopkins University
Date: Monday, December 10, 2001, Time: 4:00 p.m., Location: Fine Hall 314
Abstract: This talk is about eigenfunctions of the Laplacian (or a Schroedinger operator) on a (mainly compact) Riemannian manifold. The most familiar examples are exponentials on flat tori and spherical harmonics on round spheres. The first have uniformly bounded L^p norms while the second have (maximally) large L^p norms. What is it about the geometry of these manifolds which produces extremal behaviour in its eigenfunctions? Some answers (obtained in collaboration with C. Sogge and J. Toth) will be provided in my talk.
Coverings of 3-Manifolds Seminar
Topic: Universal covering spaces of closed 3-manifolds Part III
Presenter: Valentin Poenaru, Université de Paris-Sud (Orsay)
Date: Tuesday, December 11, 2001, Time: 3:00 p.m., Location: Fine Hall 1201
Algebraic Geometry Seminar
Topic: Gerbes of Higgs bundles and of bundles on genus-one fibrations
Presenter: Ron Donagi, University of Pennsylvania
Date: Tuesday, December 11, 2001, Time: 4:30 p.m., Location: Fine Hall 314
Department Colloquium
Topic: Universal covering spaces of closed 3 manifolds are simply connected at infinity
Presenter: Valentin Poenaru, Université de Paris-Sud (Orsay)
Date: Wednesday, December 12, 2001, Time: 4:30 p.m., Location: Fine Hall 314
Coverings of 3-Manifolds Seminar
Topic: Universal covering spaces of closed 3-manifolds Part IV
Presenter: Valentin Poenaru, Université de Paris-Sud (Orsay)
Date: Thursday, December 13, 2001, Time: 3:00 p.m., Location: Fine Hall 1201
Topolgy Seminar
Topic: An integer valued SU(3) Casson invariant for homology 3-spheres
Presenter: Hans Boden, McMaster University
Date: Thursday, December 13, 2001, Time: 4:00 p.m., Location: Fine Hall 314
Princeton/IAS Number Theory Seminar
Topic: Congruences between modular forms.
Presenter: James Parson, Princeton University
Date: Thursday, December 13, 2001, Time: 4:30 p.m., Location: TBA
Abstract: Since the 70s, the old subject of congruences between elliptic modular forms has been relevant to contemporary arithmetic issues. Some of the fundamental results on such congruences will be discussed and a new perspective based on the modular representation theory of reductive groups over local fields will be introduced.
Geometric Analysis Seminar
Topic: Harmonic map between spheres
Presenter: Tang Zizhou, Princeton University and Tsing Hua University
Date: Friday, December 14, 2001, Time: 3:00 p.m., Location: Fine Hall 314