Σεμινάριο: Συναρτησιακή Ανάλυση και Άλγεβρες Τελεστών
(Online via zoom)
Friday, June 3, 2022 at 17:00 Athens time
Speaker: Yemon Choi (U. Lancaster, UK)
Abstract: In work with Farah and Ozawa, we exhibited a closed subalgebra of ℓ∞⊗M2 which is amenable, yet is not Banach-algebra-isomorphic to any C*-algebra; the non-isomorphism is witnessed by the failure to be "unitarizable" of certain bounded subgroups of matrix corona algebras. It remains an open question whether similar "counterexamples" can be found inside C(K)⊗Md for metrizable K. In this talk we report on some work in progress, joint with B. Green (Lancaster), investigating what can be said when K has finite Cantor-Bendixson rank.
Zoom meeting coordinates upatras-gr.zoom.us/j/99245950296
or Meeting ID: 992 4595 0296 Passcode: cstaralg
For additional information see the seminar webpage