פעילויות השבוע
Operator Algebras and Operator Theory
Description of Intermediate C*-Algebras for Noncommutative Crossed Products
מרץ 29, 12:00—13:00, 2023, Minus 101
מרצה
Apurva Seth (BGU)
תקציר
This is a joint work with Prof. Ilan Hirshberg and Dr. Tattwamasi Amrutam. Let $\Gamma$ be a discrete group with the property-AP. We give conditions for the inclusion of unital separable C-algebras $A \subset B$ for which every intermediate C-algebra $C$, such that $A \rtimes \Gamma \subset C \subset B \rtimes \Gamma$ is a crossed product. We shall end this talk with some natural classes of inclusion satisfying the above mentioned conditions.
BGU Probability and Ergodic Theory (PET) seminar
Actions of random quotients on hyperbolic CAT(0) cube complexes
מרץ 30, 11:10—12:00, 2023, -101
מרצה
Thomas Ng (Technion - Israel Institute of Technology)
תקציר
Combinatorial nonpositive curvature of CAT(0) cube complexes plays a surprising role both in topological characterization of hyperbolic 3-manifolds and also in studying algebraic properties of random groups.
With Einstein, Krishna MS, Montee, and Steenbock, we introduce a new model for random quotients of free products that generalizes Gromov’s destiny model. I will discuss challenges that arise in this new setting, connections to work of Futer-Wise and Martin-Steenbock on cubulating quotients, as well as applications to residual finiteness using recent work of Einstein and Groves on relative cubulation.
Operator Algebras and Operator Theory
TBA
מרץ 30, 14:00—15:00, 2023, Minus 101
מרצה
TBA