Events for 11/18/2009 from all calendars
Several Complex Variables Seminar
Time: 03:10AM - 4:10PM
Location: MILN 317
Speaker: Mikael Passare, Stockholm University
Title: Coamoebas and Mellin transforms
Abstract: The coamoeba of a complex polynomial $f$ is defined to be the image of the hypersurface defined by $f$ under the mapping $\text{Arg}$ that sends each coordinate $z_k$ to its argument $\arg z_k$. We shall discuss the connection between coamoebas and the multidimensional Mellin transforms of rational functions. It turns out that there is some amusing combinatorics involved here.
Departmental External Review
Time: 08:00AM - 8:00PM
Number Theory Seminar
Time: 1:45PM - 2:45PM
Location: MILN 317
Speaker: Kimberly Hopkins, UT Austin
Title: Higher weight Heegner points and the Riemann Hypothesis
Abstract: The theorem of Gross, Kohnen, and Zagier says approximately that the Heegner divisors for a weight two Hecke eigenform lie on a line in the Jacobian, and that their positions on this line are given by the coefficients of certain half-integer weight modular forms. In this talk we formulate two conjectures which partially generalize their theorem to higher weight modular forms. This is done by the construction of what we call `higher weight Heegner points'. Examples and results will be discussed. We will try to motivate this topic from the angle of the celebrated Riemann Hypothesis.
Groups and Dynamics Seminar
Time: 3:00PM - 3:50PM
Location: MILN 216
Speaker: Kateryna Iushchenko, Texas A&am;M University
Title: Examples of hyperlinear groups without factorization property
Abstract: Following a paper of Andreas Thom we construct non-residually finite group with Kazhdan's property (T) which is locally embeddable into finite groups. As a consequence this group is hyperlinear but fails to have Kirchberg's factorization property.
Analysis/PDE Reading Seminar
Time: 4:00PM - 5:00PM
Location: MILN317
Speaker: Andrew Comech, Texas A&M University
Title: Scattering Theory and Nonlinear Waves
Abstract: We continue studying the connection between Schroedinger equation and KdV. This is the second meeting on the Riemann-Hilbert problem.