Noncommutative Geometry Seminar

Date: April 30, 2021

Time: 1:00PM - 2:00PM

Location: Zoom 951 5490 42

Speaker: Anna Skripka, University of New Mexico

Title: Approximation of functions of unbounded operators

Abstract: We will discuss recent advancements in approximation of functional calculus arising in problems of mathematical physics and noncommutative geometry. Our goal is to establish nice bounds and representations for (semi-)norms of approximation errors. Challenges arise, in particular, from noncommutativity of a perturbation and initial unbounded operator as well as noncompactness of the perturbation. Successful resolution rests on multilinear operator integration, a powerful technical method with a long history in noncommutative analysis.

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