MenuEvents for 02/15/2019 from all calendars
Working Seminar on Quantum Groups
Time: 10:30AM - 12:00PM
Location: BLOC 624
Speaker: Priyanga Ganesan, TAMU
Title: Representations of CQG, part II
Probability Seminar
Time: 11:00AM - 12:00PM
Location: BLOC 628
Speaker: Petros Valettas, University of Missouri
Title: Gaussian concentration and convexity
Abstract: We will discuss new forms of concentration and anti-concentration phenomena explained by convexity rather than isoperimetry. On the side of applications, this perspective allows for superconcentration and convexity to be melted together in order to obtain strong small ball and small deviation estimates in normed spaces. In this framework, the $\ell_\infty$-structure arises naturally as the (approximate) extremal. The underlying principle dictating these phenomena is rooted in the sensitivity of the variance. Based on a joint work with G. Paouris and K. Tikhomirov
Seminar on Banach and Metric Space Geometry
Time: 11:00AM - 12:00PM
Location: BLOC 628
Speaker: Petros Valettas, University of Missouri
Title: Gaussian concentration and convexity
Abstract: We will discuss new forms of concentration and anti-concentration phenomena explained by convexity rather than isoperimetry. On the side of applications, this perspective allows for superconcentration and convexity to be melted together in order to obtain strong small ball and small deviation estimates in normed spaces. In this framework, the l∞-structure arises naturally as the (approximate) extremal. The underlying principle dictating these phenomena is rooted in the sensitivity of the variance. Based on a joint work with G. Paouris and K. Tikhomirov.
Presentation of new Math Gamelets
Time: 12:00PM - 1:00PM
Location: BLOC 220
Speaker: TRISEUM
Working Seminar in Groups, Dynamics, and Operator Algebras
Time: 2:00PM - 2:50PM
Location: BLOC 628
Speaker: Xin Ma, Texas A&M University
Title: Topological full groups of one-sided shifts of finite type IX
Algebra and Combinatorics Seminar
Time: 3:00PM - 4:00PM
Location: BLOC 628
Speaker: Galen Dorpalen-Barry, University of Minnesota
Title: Whitney Numbers for Cones
Abstract: An arrangement of hyperplanes dissects space into connected components called chambers. A nonempty intersection of halfspaces from the arrangement will be called a cone. The number of chambers of the arrangement lying within the cone is counted by a theorem of Zaslavsky, as a sum of certain nonnegative integers that we will call the cone's "Whitney numbers of the 1st kind". For cones inside the reflection arrangement of type A (the braid arrangement), cones correspond to posets, chambers in the cone correspond to linear extensions of the poset, and these Whitney numbers refine the number of linear extensions. We present some basic facts about these Whitney numbers, and interpret them for two families of posets.
Linear Analysis Seminar
Time: 4:00PM - 5:00PM
Location: BLOC 220
Speaker: Michiya Mori, University of Tokyo
Title: Isometries between substructures of operator algebras II
Abstract: I will explain further details about the talk one week before, in particular on Tingley's problem for operator algebras.
