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Seminars for the week of April 9, 2007
Colloquium
Thursday, 3:20, in VinH 16Professor John Mallet-Paret
of Division of Applied Mathematics, Brown University
will speak on
"Qualitative and geometric dynamics of time-delay systems"
Differential equations which involve time-delays arise in various applications, and are the source of a rich and growing theory. A simple example of such an equation is $\dot x(t) = -x(t)+f(x(t-r))$ where $r\geq 0$ could be a constant, an explicit function $r=r(t)$ of time, or may be determined from the state as $r=r(x(t))$. Certainly more complicated examples occur. The qualitative and geometric approach of dynamical systems has proved particularly fruitful in studying such systems. Techniques involving invariant manifolds, degree theory, singular perturbations, and Floquet theory are employed although their adaptation to the delay setting can be highly nontrivial. In this lecture, we describe some recent advances in the theory, as well as open problems.
Monday, 9 Apr 2007
- ... Will not meet this week
- Luan Hoang will speak on "Navier-Stokes equations with Navier boundary conditions in nearly flat domains"
- Li Zhong will speak on "Weil representation through tensor product"
- Professor G. Seregin will speak on "Local regularity of the Navier-Stokes equations, I. (This is the first in a series of four talks)"
-
Special Seminar:
at 11:15 in LindH 409
-
Joint with PDE and Dynamical Systems Seminar:
at 3:35 in VinH 570
-
Student Lie Groups Seminar:
at 3:35 in VinH 213
-
Real Analysis:
at 4:40 in VinH 206
Tuesday, 10 Apr 2007
- Professor Uwe Nagel from University of Kentucky will speak on "Hilbert functions of standard graded algebras"
- Professor Alexander A. Voronov will speak on "BV quantization, II: Matthai-Quillen's trick and BV master equation"
- ... Will not meet this week
- Professor Paul Garrett will speak on "Spectral decompositions, generalized functions, and number theory"
- Mr. Alexander Korolev will speak on "Generalization(s) of Banach fixed point theorem"
-
IMA Postdoc Seminar:
at 11:15 in Lind Hall 215
-
Algebra, Topology, and Physics:
at 1:20 in VinH 301
-
Student Algebraic Geometry, Geometry and Topology:
at 1:25 in 570 VinH
-
Jr. Colloquium:
at 4:30 in VinH 301
-
Student Seminar on Differential Equations:
at 5:00 in VinH 203B
Wednesday, 11 Apr 2007
- Professor Saugata Basu from Georgia Institute of Technology will speak on "Combinatorial complexity in o-minimal geometry"
- Professor Laurent Clozel from University of Paris, at Orsay will speak on "Algebraic automorphic forms and motives"
- Professor Scot Adams will speak on "A continuation of Junior Seminar in Financial Math"
- Mr. Ben Rosenfield will speak on "Hecke theory and converse theorem for GL(n)"
- Professor Alex Mahalov from Arizona State University will speak on "3D Navier-Stokes and Euler equations with uniformly large initial vorticity: Global regularity and three-dimensional Euler dynamics"
-
Algebraic Geometry and Applications:
at 11:15 in EE/CS 3-180
-
Special Ordway Lecture Series:
at 2:30 in VinH 213
-
Financial Mathematics:
at 3:30 in VinH 1
-
Student Automorphic Forms:
at 3:35 in VinH 213
-
PDE:
at 3:35 in VinH 570
Thursday, 12 Apr 2007
- ... Will not meet this week
- Kenneth R. Driessel from Iowa State University will speak on "Applications of the abstract positivstellensatz"
- Mr. Dan Swenson will speak on "The Steinberg complex"
- Professor John Mallet-Paret from Brown University will speak on "Qualitative and geometric dynamics of time-delay systems"
- ... Will not meet this week
-
Applied Mathematics and Numerical Analysis:
at 11:15 in VinH 570
-
Weekly Tutorial: Real Algebraic Geometry:
at 11:15 in LindH 409
-
Algebraic Representation Theory:
at 1:25 in VinH 206
-
Colloquium:
at 3:20 in VinH 16
-
Informal Mathematical Biology:
at 5:30 in VinH 570
Friday, 13 Apr 2007
- Professor Hao Fang from University of Iowa will speak on "The geometry of intermediate Jacobians"
- ... Will not meet this week
- Professor Laurent Clozel from University of Paris, at Orsay will speak on "Algebraic automorphic forms and motives"
- ... Will not meet this week
- Professor Christos Athanasiadis from University of Athens will speak on "Combinatorics and topology of generalized cluster complexes"
- Professor Krzysztof Burdzy from University of Washington will speak on "A particle representation for the heat equation solution"
- Professor Paul Garrett will speak on "Integral identities as reciprocity laws"
-
Differential Geometry/Symplectic Topology:
at 12:20 in VinH 207
-
Industrial Problems Seminar:
at 1:25 in VinH 1
-
Special Ordway Lecture Series:
at 2:30 in VinH 213
-
Student Combinatorics:
at 2:30 in VinH 570
-
Combinatorics:
at 3:35 in VinH 570
-
Probability:
at 3:35 in VinH 206
-
Automorphic Forms and Number Theory:
at 3:35 in VinH 364
Professor John Mallet-Paret from Brown University will be visiting for one month beginning April 1, 2007. His visit is made possible by the Ordway Endowment. During his stay, Professor Mallet-Paret's office will be VinH 109A; you can reach him by phone at 625-6398.\hfill\break\vskip .2cmProfessor Laurent Clozel, University of Paris-SUD will visit the School of Mathematics for one month beginning April 8, 2007. Professor Clozel's visit is made possible by the Ordway Endowment. While in residence, Professor Clozel's office will be Vincent Hall 323; you can reach him by phone at 625-6802
