Operator Algebras and Dynamics Seminars

Spring 2016

All talks are from 3:45-4:45 p.m. in the Seminar room, unless otherwise specified.

• May

  02
• K-theoretic Dynamics and the C*-Connes Embedding Theorem

  Timothy Rainone

  University of Waterloo

  Time: 03:45 PM

  Abstract

• Apr

  29
• Binary Shifts and Cocycle Conjugacy

  Prof. Geoffrey Price

  USNA

  Location: CH320

  Time: 03:45 PM

  Abstract

• Apr

  11
• Topological Orbit Equivalence

  Maria Isabel Cortez

  Santiago University, Chile

  Time: 03:45 PM

  View Abstract

  Two dynamical systems are orbit equivalent if there is a one to one correspondence between their orbits. If this correspondence respects the topological structure of the systems, we say that they are topological orbit equivalent. In this talk we introduce the concept of orbit equivalence and some interesting algebraic invariant for this property.

• Apr

  08
• Automorphisms of Free Group Factors

  Prof. Alexis Alevras

  USNA

  Location: CH320

  Time: 03:45 PM

  View Abstract

  One of the fundamental questions in non-commutative ergodic theory is the classification of the automorphisms of a von Neumann algebra up to outer conjugacy. I will discuss the proof, due to John Philips, that the space of outer conjugacy classes of automorphisms of the factor of the free group on infinitely many generators is not countably separated.

• Mar

  21
• Crossed product constructions in operator algebra theory

  Chris Ramsey

  University of Virginia

  Time: 12:00 PM

  View Abstract

  I will develop a theory of crossed products that allows for a locally compact group to act on an arbitrary operator algebra, not just a C*-algebra. This is joint work with Elias Katsoulis.

• Mar

  14
• On rigidity in topological dynamics

  Piotr Oprocha

  AGH University of Science and Technology, Krakow, Poland

  Location: CH320

  Time: 11:00 AM

  Abstract

• Mar

  07
• UHF Factors, Dynamical Properties, and a Theorem of Powers. Part II

  Prof. Mitch Baker

  USNA

  Location: CH320

  Time: 03:45 PM

  View Abstract

  We present an old result proved by Powers and used in his famous paper on UHF algebras in order to compare the concepts of ergodicity and strong mixing in Dynamical Systems to a kind of asymptotic factorization of states in a non-commutative setting.

• Feb

  22
• UHF Factors, Dynamical Properties, and a Theorem of Powers.

  Prof. Mitch Baker

  USNA

  Location: CH320

  Time: 03:45 PM

  View Abstract

  We present an old result proved by Powers and used in his famous paper on UHF algebras in order to compare the concepts of ergodicity and strong mixing in Dynamical Systems to a kind of asymptotic factorization of states in a non-commutative setting.

• Jan

  28
• From Operator Algebra to Noncommutative Function Theory

  Paul S. Muhly

  University of Iowa

  Time: 03:45 PM

  Abstract