MenuEvents for 04/06/2018 from all calendars
Brown Bag Lunch Series on Teaching
Time: 12:30PM - 1:30PM
Location: Blocker 220
Speaker: open
Title:
Newton-Okounkov Bodies
Time: 1:00PM - 2:30PM
Location: BLOC 624
Speaker: Elise Walker, Texas A&M University
Title: Polyhedral homotopy
Mathematical Physics and Harmonic Analysis Seminar
Time: 1:50PM - 2:50PM
Location: BLOC 628
Speaker: Oran Gannot, Northwestern University
Title: Semiclassical diffraction by conormal potential singularities
Abstract: I will describe joint work with Jared Wunsch on propagation of singularities for some semiclassical Schrödinger equations, where the potential is conormal to a hypersurface. Semiclassical singularities of a given strength propagate across the hypersurface up to a threshold depending on both the regularity of the potential and the singularities along certainbackwards broken bicharacteristics.
Geometry Seminar
Time: 4:00PM - 8:00PM
Speaker: Texas Algebraic Geometry Seminar
Title:
Linear Analysis Seminar
Time: 4:00PM - 5:00PM
Location: BLOC 220
Speaker: Dmitriy Zanin, University of New South Wales
Title: Estimates on the singular values for generalised Hilbert transform and double operator integrals
Abstract: If $Hf$ is a Hilbert transform of a function $f,$ then it is well known that $\mu(Hf)\leq (C+C^*)\mu(f),$ where $C$ is the Cesaro operator. This estimate is the best possible. This talk aims to provide a noncommutative analogue of this classical result. The following is demonstrated: if an operator $T$ satisfies $\mathcal{L}_1\to\mathcal{L}_{1,\infty}$ estimate, then $\mu(T(A))\leq (C+C^*)\mu(A).$ In particular, the latter estimate applies to triangular truncation operator (which is considered a noncommutative version of a Hilbert transform). It also applies to certain types of double operator integrals. We show that the estimate above is the best possible for the triangular truncation operator."
