Tel Aviv University 
Dear all,
This week at the Horowitz seminar on Probability, Ergodic Theory and
Dynamical Systems at Tel Aviv University we are happy to have:
Speaker: Benjamin Weiss, The Hebrew University of Jerusalem
Title: On "a curious conjugacy invariant" of Halmos
Date: Monday, November 19
Time: 14:30
Place: Schreiber 309
One of the problems that Halmos posed at the end of his classic
lectures on ergodic theory concerns a curious conjugacy invariant
that he suggested might distinguish between ergodic toral
automorphisms. I will describe this invariant and report on some
recent results of A. Quas and T. Soo on the ergodic universality of
toral automorphisms which relate to this invariant. In addition I
will indicate an alternative argument which will suffice for the
application to the Halmos problem.
Best regards,
Seminar webpage:
Technion Math Net-2 (TECHMATH2)
Editor: Michael Cwikel   <> 
Announcement from: Ron Peled   <>