Monday March 19, 2007

Topology Seminar
TIME: 10:10a.m. -11:00a.m.
ROOM: Ayres Hall 015
SPEAKER: Anastasiia Tsvietkova
TITLE: Cat(0) spaces V

DE and Applied/Computational Math Seminar
TIME: 3:35 p.m. -­ 4:25 p.m.
ROOM: Ayres Hall 309A
SPEAKER: Professor Christian Remling, University of Oklahoma
TITLE: Differential operators and de Branges spaces
ABSTRACT: The spectral theory of ordinary differential operators can be given a function theoretic interpretation. This (and much more) is accomplished by de Branges's theory of Hilbert spaces of entire functions. In this talk, I'd like to discuss some aspects of this interaction between spectral theory and de Branges's formalism.

Wednesday March 21, 2007

TOPOLOGY SEMINAR
TIME: 10:10a.m. -11:00a.m.
ROOM: Ayres Hall 015
SPEAKER: Conrad Plaut
TITLE: Uniform Universal Covers V

Algebra Seminar

TIME: 3:35 p.m. -­ 4:25 p.m.
ROOM: Ayres Hall 309B
SPEAKER: Ryan Clark
TITLE: Injective Modules

Thursday, March 22, 2007

Probability Seminar

TIME: 10:10 a.m. - 11:00 a.m.
ROOM: 309B Ayres Hall
SPEAKER: Professor Gennady Samorodnitsky, Cornell University
TITLE: Tails of infinite sums

ABSTRACT: We discuss convergence and the tails of infinite series of independent heavy tailed random vectors with matrix-valued predictable coefficients. Examples include linear processes, random recursions and a tail version of Wald identity. This talk is based on a joint work with Henrik Hult.

Friday, March 23, 2007

Colloquium

TIME: 3:35 p.m. – 4:25 p.m.
ROOM: 214 Ayres Hall
SPEAKER: Professor Gennady Samorodnitsky, Cornell University
TITLE: Ergodic theory, group theory and extrema of stable random fields

ABSTRACT: We establish connections between the ergodic theoretical and group theoretical properties of the non-singular group action underlying a stationary symmetric $\alpha$-stable random field and its extrema over increasing hypercubes. This builds on the results of J. Rosinski (2000) and G. Samorodnitsky (2004). The talk is based on a joint recent work with Parthanil Roy.

---