Seminars and Colloquiums
for week of August 29, 2011
Speaker:
Professor David Anderson , Monday
Professor Cheng Wang, University of Massachusetts, Dartmouth
Mr. Fei Xing, Monday
Professor Stefan Richter, Wednesday
Mr. Eric Numfor, Thursday
Professor Fernando Schwartz, Friday
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. Judy Day.
Monday, August 29
ALGEBRA SEMINAR
TIME: 2:30 – 3:30 p.m.
ROOM: Ayres B004
SPEAKER: Professor David Anderson
TITLE: "The Abian partial order on a ring"
DE/Applied and Computational Math Seminar
TIME: 3:35 – 4:30 p.m.
ROOM: Ayres 113
SPEAKER: Professor Cheng Wang, University of Massachusetts, Dartmouth
TITLE: “Local and global in time numerical stability of fully discrete pseudo-spectral schemes for nonlinear PDEs” ABSTRACT: Stability and convergence analysis for fully discrete pseudo spectral numerical schemes to nonlinear PDEs are presented in this talk, such as viscous Burgers' equation and incompressible Navier-Stokes equations. Related applications to incompressible Euler equation and quasi-geostrophic equation will also be addressed, in both 2-D and 3-D, for smooth and vortex sheet initial data. In addition, high order time stepping schemes, including Adams Bashforth-Adams Moulton multi-step schemes up to fourth order accuracy and high order explicit SSP schemes, will be explored in detail. Unconditional stability is established for the implicit time stepping algorithms.
PROBABILITY SEMINAR
TIME: 3:35 – 4:25 p.m.
ROOM: Ayres 122
SPEAKER: Mr. Fei Xing
TITLE: "Almost sure asymptotic for Ornstein-Uhlenbeck process of Poisson potential"
ABSTRACT: Consider a particle moving randomly in R^d space. There are some points, independent of the particle movement, randomly located in this space (called the "random media"). The particle earns rewards from those points from time to time. An interesting question is: what is the growth rate of
this total reward in a long run? In this talk, I will answer this question in some way under the situation that the particle follows a type of stationary movement (Ornstein-Uhlenbeck process) in a Poisson distributed random media.
In my first talk, I will start with the background of this probabilistic problem, then formulate the model and present the main result I've obtained. Some useful estimate for the random media will also be given during the talk.
Wednesday, August 31
ANALYSIS SEMINAR
TIME: 3:35 – 4:25 p.m.
ROOM: Ayres 113
SPEAKER: Professor Stefan Richter, UTK
TITLE: "Cyclic functions in spaces of analytic functions of several complex variables"
ABSTRACT: A function f is called cyclic in a space H, if the polynomial multiples of f are dense in H. For analytic functions of a single variable investigations about cyclic vectors are a classical topic: Many nontrivial results are known and challenging open problems remain. I will discuss some results and open questions about functions of several variables.
Thursday, September 1
MATH BIOLOGY SEMINAR
TIME: 12:45 – 1:35 p.m.
ROOM: NIMBioS Classroom
SPEAKER: Mr. Eric Numfor
TITLE: “Passive Diffusion in Ecosystems”
Friday, September 2
COLLOQUIUM
TIME: 3:35 – 4:25 p.m.
ROOM: Ayres 112
SPEAKER: Professor Fernando Schwartz, UTK
TITLE: "On how black holes contribute to the mass of the Universe"
ABSTRACT: I will describe the Penrose inequality of general relativity and sketch the proof of a version of it which partially solves a conjecture by Bray and Iga. The talk is about joint work with Alex Freire.
Refreshments available in Ayres 401 at 3:15 p.m.
Past notices:
Seminars from 2010-2011 academic year
Seminars from 2009-2010 academic year
Seminars from 2008-2009 academic year
Seminars from 2007-2008 academic year
Seminars from 2006-2007 academic year