University of Georgia
Department of Mathematics
Seminar Schedule
April 5 - April 9, 2004
All Seminars are held in Boyd Graduate Studies Bldg. unless
otherwise noted.
VIGRE - Algebra
2:30p.m., Room 410
Speaker: Daniel Nakano, University of Georgia
Title of talk: Support varieties for Weyl modules III
Topology
2:30p.m., Room 322
Speaker: David Galewski, University of Georgia
Title of talk: Spines of 3-manifolds, continued
Faculty and Graduate Social
3:00p.m., Room 409
Coffee, Tea, Cookies
Lie Theory
3:30p.m., Room 303
Not meeting this week
Stochastic Processes
3:30p.m., Room 410
Speaker: Moustapah Pemy, University of Georgia
Title of talk: Stochastic Calculus.
VIGRE Graduate Student Seminar
2:00p.m., Room 304
Speaker: Aaron Abrams, University of Georgia
Title of talk: Braids, graphs, and robots
Abstract: A common technique for solving problems involving
lots of moving objects is to introduce a topological space called the "configuration
space" associated to the problem. This talk will focus on the configuration
spaces associated to motions of several points on a graph. We will play with
several examples and hopefully get used to visualizing these spaces. Along the
way these spaces will exhibit some neat properties, which are both mathematically
interesting and useful for solving related problems in robotics.
Special Seminar in Analysis
2:00-4:00p.m., Ga Tech, Rm. 255
Speaker: TBA
Title of talk: TBA
Wavelet Analysis
2:00p.m., Room 326
Speaker: Kyunglim Nam, University of Georgia
Title of talk: Box splines for image denoising
Berkovich Spaces Seminar
11:00a.m., Room 410
Organizers: Matthew Baker and Robert Rumely
Algebra
2:30p.m., Room 410
Speaker: JangHyun Jo, University of Georgia
Title of talk: A criterion for projective modules.
Abstract : Let $G$ be a finite group. There is a well-known
projective criterion : A $\bbz G$-module $M$ is projective if and only if it
is $\bbz$-free and has finite projective dimension. We first investigate whether
only finite groups satisfy the above criterion. In the class of groups $\HF$,
this turns out to be true. Secondly, we show that for an $\LHF$-group $\Gamma$,
every stably flat cofibrant $\bbz\Gamma$-module is projective.
Algebraic Geometry Seminar
2:30p.m., Room 303
Speaker: Peter Petrov, University of Georgia
Title of talk: Motivic Integration With Calculations
Abstract: The aim of this talk is first to introduce shortly,
but with motivation, some tools and facts from the motivic integration. After
that few simpleconcrete calculations will be done on examples of toric varieties,
such as A^n, P^n x P^m and F_a. Finally the case of smooth toric variety with
T-invariant Cartier divisor will be observed and the case of simplicial toric
variety will be discussed. A very basic knowledge in toric geometry will be
enough to understand it.
Faculty and Graduate Social
3:00p.m., Room 409
Coffee, Cookies, Tea
Numerical Analysis
3:30p.m., Room 303
Speaker: Ming-Jun Lai, University of Georgia
Title of talk: Convergence of Uzawa-like Iterative Method
Number Theory
3:45p.m., Room 304
Speaker: Frank Calegari, Harvard University
Title: Ramification of Hecke Algebras at Eisenstein Primes
Abstract: Using techniques of Wiles, we revisit the structure
of the Eisenstein Ideal, first studied by Mazur in the seventies.
In this optic, one can reprove many of Mazur's results using algebra instead
of geometry. In this way we also obtain new
information about the ramification of Hecke algebras at Eisenstein primes. Along
the way we derive a curious numerical criterion for the non-triviality of certain
class groups. This is joint work with Matthew Emerton.
VIGRE - Cardiac Physiology
2:30p.m., Room 304
Speaker: Tremaine Skeen, University of Georgia
Activity: Tremaine will discuss ion channel gating and will go over
potassium and sodium channels, focusing on a detailed discussion of the sodium
channel. This is the last main concept that we will cover before discussing
the Hodgkin-Huxley model.
VIGRE - Contact Topology
2:00p.m., Room 410
Organizer: Gordana Matic, University of Georgia
Faculty and Graduate Social
3:00p.m., Room 409
Coffee, Tea, Cookies
Colloquium
3:30p.m., Room 304
Speaker: Semyon Alesker, Tel Aviv University
Titleof talk: Theory of continuous valuations
Student Number Theory
3:30p.m., Room 303
Speaker: Michael Guy, University of Georgia
Title of talk: Quantum Cohomology
Abstract: Quantum Cohomology is an interesting and still emerging idea
which has connections to physics, algebraic geometry and probably other stuff
too. This "new" theory can be used to give proofs of classical ideas
such as the famous 27 lines theorem for a cubic. I will present some information
on the subject and show how the 27 lines theorem is proven. This talk is in
preparation for my oral exam, and the more feedback I recieve, the better!
CATS
1:25-2:15pm, Room 306
Speaker: M. Agrawal, University of Georgia
Title of talk: Generation of SCFG models for RNA secondary
structure
Electrodynamics Seminar
2:30p.m., Room 322
Speaker: Bob Wood and Bob Anderson, UGA Physics Department
Title of talk: Wigner's time reversal, I
Geometry
2:30p.m., Room 326
Speaker: Ted Ashton, University of Georgia
Title of Talk: Octrope: A Fast Algorithm for Computing
Ropelength.