Events for 09/01/2017 from all calendars
Mathematical Physics and Harmonic Analysis Seminar
Time: 3:00PM - 4:00PM
Location: BLOC 628
Speaker: Selim Sukhtaiev, Rice University
Title: The Maslov index and the spectra of second order elliptic operators
Abstract: In this talk I will discuss a formula relating the spectral flow of the one-parameter families of second order elliptic operators to the Maslov index, the topological invariant counting the signed number of conjugate points of certain paths of Lagrangian planes. In addition, I will present formulas expressing the Morse index, the number of negative eigenvalues, in terms of the Maslov index for several classes of second order differential operators. The talk is based on joint work with Yuri Latushkin.
Algebra and Combinatorics Seminar
Time: 3:00PM - 3:50PM
Location: BLOC 506A
Speaker: Eric Rowell, Texas A&M University
Title: Organizational meeting
Geometry Seminar
Time: 4:00PM - 5:00PM
Location: BLOC 628
Speaker: E. Ventura, TAMU
Title: Catalecticants, antipolars, and ranks of forms
Abstract: The complex (or real) rank of a homogeneous polynomial is the smallest number of powers of complex (or real) linear forms such that the polynomial may be expressed as a linear combination of those. Such an expression is called a minimal Waring or symmetric decomposition. We will talk about real and complex ranks in the setting of bihomogeneous polynomials by the means of maps associated to them: catalecticants and antipolars. We will also explain how the latter ones are related to loci encoding information about minimal decompositions of these bihomogeneous polynomials.
Linear Analysis Seminar
Time: 4:00PM - 5:00PM
Location: BLOC 220
Speaker: Gilles Pisier, TAMU
Title: Completely Sidon sets in discrete groups
URL: Event link