Un of Tenn | Math Department

Seminars and Colloquiums
for the week of February 11, 2013

Speakers:

Mr. Ernest Jum, Monday
Dr. Mike Gilchrist (EEB), Wednesday
Prof. Paul Bourdon, Wednesday
Mr. Kyle Austin, Thursday
Dr. Suzanne Lenhart, Thursday

*** Tea Time this week will be Monday - Wednesday at 3:00 pm.
Hosted this week by Allison Heming and Brittany Stephenson. Everyone is welcome! ***

MONDAY, FEBRUARY 11

SIAM Student Chapter Meeting
TIME: 12:30-1:10
ROOM: Ayres 114
Meet to discuss the upcoming SIAM-SEAS Southeastern Atlantic Section Meeting at UT/ORNL on March 23-24. Volunteer help is needed.

Pizza will be served.

PROBABILITY SEMINAR
TIME: 3:35 - 4:25
ROOM: Ayres 122
SPEAKER: Mr. Ernest Jum
TITLE: Jump-adapted discretization schemes for Levy driven SDEs, Part 2.
ABSTRACT: An algorithm for weak approximation of stochastic differential equations driven by pure jump Levy processes is presented. The method uses adaptive non-uniform discretization based on the times of large jumps of the driving process. To approximate the solution between these times, the small jump noise is replaced with a Brownian motion. This technique avoids the simulation of the increments of the Levy process and in many cases achieves a better rate of convergence than the traditional Euler scheme with equal time steps.

WEDNESDAY, FEBRUARY 13

MATH BIOLOGY SEMINAR
TIME: 12:20 - 1:10
ROOM: Ayres 114
SPEAKER: Dr. Mike Gilchrist
TITLE: Ecological Models and Data in R - continued

ANALYSIS SEMINAR
TIME: 3:35 - 4:25
ROOM: Ayres 112
SPEAKER: Prof. Paul Bourdon
TITLE: Weighted Composition Operators on Weighted Hardy Spaces - 2
ABSTRACT: I'll introduce this class of operators, providing some observations about boundedness and invariant subspaces. Then I'll prove that for certain composition operators T on the classical Hardy space, T - I is "universal" in the sense that any Hilbert-space operator has a multiple that is similar to the restriction of T-I to one of its invariant subspaces. In a second talk, I'll present a characterization of Hermitian weighted composition operators generalizing one recently obtained by Cowen, Gunatilliake, and Ko.

THURSDAY, FEBRUARY 14

TOPOLOGY SEMINAR
TIME: 9:40 - 10:30 a.m.
ROOM: Ayres Hall B004
SPEAKER: Mr. Kyle Austin
TITLE: Tamano's Theorem
ABSTRACT: The purpose of this presentation is to prove Tamano's Theorem for paracompact and countably paracompact spaces. A characterization of metric spaces in terms of partitions of unity will be given. The classical metrization criterion of Nagata-Smirnov will be mentioned?and proven if time permits.

JUNIOR COLLOQUIUM & MATH CLUB
TIME: 3:35 4:40
ROOM: Ayres 405
SPEAKER: Prof. Suzanne Lenhart
DESCRIPTION: Video showing of new Flatland and even newer Flatland 2

If you are interested in giving or arranging a talk for one of our seminars or colloquiums,
please review our calendar.

If you have questions, or a date you would like to confirm, please contact colloquium AT math DOT utk DOT edu

Past notices: