Mathematics Department

Operator Algebras and Dynamics Seminar

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
  • Apr
    29
  • Binary Shifts and Cocycle Conjugacy
    Prof. Geoffrey Price
    USNA
    Location: CH320
    Time: 03:45 PM
  • 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
  • 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
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