Events for 03/20/2019 from all calendars

Noncommutative Geometry Seminar

Time: 2:00PM - 2:50PM

Location: BLOC 628

Speaker: Zhuang Niu, University of Wyoming

Title: [Colloquium] Comparison radius and mean dimension

Abstract: Comparison radius of a C*-algebra was introduced by Toms to measure the regularity of a C*-algebra, and it can be regarded as a C*-version of dimension growth. Mean topological dimension was introduced by Gromov and developed by Lindenstrauss and Weiss, and it is an invariant for topological dynamical systems which measures dimension growth along orbits. In the talk, I will discuss some estimations of the comparison radius of the crossed product C*-algebra in terms of the mean dimension of the dynamical system.

Numerical Analysis Seminar

Time: 4:00PM - 5:00PM

Location: BLOC 220

Speaker: Antoine Mellet, UMD

Title: Anomalous Diffusion Phenomena: A Kinetic Approach

Abstract: The derivation of diffusion or drift-diffusion equations from transport equations (such as Vlasov-Fokker-Planck or Boltzmann equations) is a classical problem. In this talk, we will discuss situations in which the usual derivation fails because the mean squared displacement of the particles does not grow linearly with time. We will show that such "anomalous diffusion" regimes typically lead to fractional diffusion equations. We will present results in both bounded and unbounded domain and we will discuss some applications to the description of anomalous energy transport in chains of non-harmonic oscillators (FPU-alpha and FPU-beta chains).

First Year Graduate Student Seminar

Time: 5:30PM - 6:30PM

Location: BLOC 628

Speaker: Peter Howard

Title: Jobs in the profession