Seminars and Colloquiums
for the week of March 23, 2009
Speakers:
Dr. Chunlei Su, UT Microbiology Department, Monday
Siam Student Chapter Talk, Monday
Assistant Professor Remus Nicoara, Wednesday
Mr. Brendon LaBuz, Wednesday
Assistant Professor Remus Nicoara, Wednesday
Ms. Jenny Sinclair, Thursday
Dr. Bill Goldman, University of Maryland, Friday
Monday, March 23
MATH ECOLOGY SEMINAR
TIME: 11:15 – 12:05 p.m.
ROOM: Dabney 575
SPEAKER: Dr. Chunlei Su, UT Microbiology Department
TITLE: “Population genetics and virulence of Toxoplasma gondii”
SIAM STUDENT CHAPTER TALK AND PIZZA LUNCH
TIME: 12:20 – 1:00 p.m.
ROOM: Temple 303
SPEAKER: Sharon Bewick, UT Biomedical Engineering post-doc
TITLE: “Community structure in social and biological networks”
Wednesday, March 25
ANALYSIS SEMINAR
TIME: 3:35 – 4:25 p.m.
ROOM: AC 113A
SPEAKER: Assistant Professor Remus Nicoara
TITLE: “Continuous deformations of commuting squares"
ABSTRACT: We introduce commuting squares of finite dimensional matrix algebras and present a deformation theory for these objects. We discuss applications to inclusions of von Neumann algebras. Since we work with algebras of matrices, the talk should be quite accessible to graduate students.
TOPOLOGY SEMINAR
TIME: 3:35 – 4:25 p.m.
ROOM: AC 113
SPEAKER: Mr. Brendon LaBuz, UT
TITLE: “Generalized uniform covering maps characterized as inverse limits of uniform covering maps”
ABSTRACT: The definition of a generalized uniform covering map was inspired by a map that is the inverse limit of uniform covering maps. The inverse limit of a strong Mittag-Leffler inverse system of uniform covering maps over a space is always a generalized uniform covering map. We will see when a generalized uniform covering map can be expressed as an inverse limit of uniform covering maps.
WORKSHOP ON COURSE GEOMETRY
TIME: 4:35 – 5:25 p.m.
ROOM: AC 113
SPEAKER: Assistant Professor Remus Nicoara
TITLE: “Introduction to Kazhdan's property (T)”
ABSTRACT: We give an introduction to property (T) for groups. We present several equivalent definitions, give examples and discuss connections to amenability. Property (T) is a rigidity property introduced by Kazhdan in 1967, which turned out to play an important role in various subjects, including ergodic theory, Lie groups, operator algebras, coarse geometry and graph theory. Graduate students are encouraged to attend.
Thursday, March 26
PROBABILITY SEMINAR
TIME: 12:40 – 1:55 p.m.
ROOM: HBB 132
SPEAKER: Ms. Jenny Sinclair
TITLE: “Generalized Tempered Stable Processes”
ABSTRACT: Tempered stable processes are an important subclass of
multifractal Levy processes. Recently, many new variations on TS distributions have been introduced in the field. Each variation displays a different method of tilting the stable distribution, but all exemplify multifractal short and long term behavior. In this talk, I will discuss unifying all of these variations, thus creating a generalized tempered stable process and showing it displays multifractal properties at different scales.
Friday, March 27
COLLOQUIUM
TIME: 3:35 – 4:35 p.m.
ROOM: HBB 102
SPEAKER: Dr. Bill Goldman, University of Maryland
TITLE: “3-dimensional affine space forms”
ABSTRACT: An affine space form is a quotient of R^n by a discrete group G of affine transformations acting properly. This talk discusses the classification in dimension three. When G is solvable, the classification involves elementary algebra, and was completed in the early 1980's. The more interesting nonsolvable examples closely relate to deformations of noncompact complete hyperbolic surfaces. In this case G is a finite extension of a free group. I will describe the conjectural classification, of both the topologies and their deformation spaces.
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 Dr. Steve Wise.
Week of:
3/16/09 (spring break)
Past notices:
Seminars from 2007-2008 academic year
Seminars from 2006-2007 academic year