Events for 02/10/2023 from all calendars

Algebra and Combinatorics Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 302

Speaker: Laura Matusevich, Texas A&M University

Title: Differential operators and algebra retracts

Abstract: I will define rings of differential operators, and discuss the few explicitly known examples. Using algebra retracts (subrings that are also quotients) I will show how to compute the rings of differential operators on toric face rings. All the terminology will be introduced in the talk, no background on differential operators or toric face rings is necessary. This is joint work with Berkesch, Chan, Klein, Page and Vassilev.

Free Probability and Operators

Time: 4:00PM - 5:00PM

Location: BLOC 306

Speaker: Ken Dykema, TAMU

Title: On spectral and decomposable operators in finite von Neumann algebras. (cont.)

Abstract: We describe spectral and decomposable operators on Hilbert spaces and then, in the case of operators belonging to finite von Neumann algebras, relate these properties to the Haagerup-Schultz subspaces of the operators. Finally, we will examine certain such operators arising naturally in free probability theory.