Tuesday, February 16, 2016 (3:00 p.m. in Yost 306)
Title: A simple proof of Størmer's theorem
Speaker: Stanislaw Szarek (Kerr Professor of Mathematics, Case Western Reserve University)
Abstract: The structure of the set of positivity-preserving maps between matrix algebras is notoriously difficult to describe. The notable exceptions are the low dimensional cases settled by Størmer and...