
THE
FIELDS INSTITUTE
FOR RESEARCH IN MATHEMATICAL SCIENCES
20th
ANNIVERSARY
YEAR

Operator
Algebras Seminars
July 2011  June 2012
Seminars
are generally held every Tuesday and Thursday at 2pm
in Room 210.
For more information about this program please contact
George Elliott
Hosted by the Fields Institute



PAST SEMINARS 
June 19 & June 21 
Seminars are cancelled this week 
June 14 
Problem Solving Thursday 
June 12 
Working seminar 
June 6 
Zhiqiang Li
Ktheoretic classification of inductive limit finite
cyclic group actions on AFalgebras
A Ktheoretic classification of inductive limit finite
cyclic group actions on AFalgebras is given.

April 24 
James Lutley
Hilbert Modules, Strong Morita Equivalence and Rotation
Algebras

April 
Working seminar 
March 2012 
Working seminar 
Feb. 2012 
Working seminar 
January 12, 2012

Vitali Vougalter, University
of Cape Town
Sharp semiclassical bounds for the moments of eigenvalues for
some Schroedinger type operators with unbounded potentials
We establish sharp semiclassical upper bounds for the moments
of some negative powers for the eigenvalues of the Dirichlet
Laplacian. When a constant magnetic field is incorporated in
the problem, we obtain sharp lower bounds for the moments of
positive powers not exceeding one for such eigenvalues. When
considering a Schroedinger operator with the relativistic kinetic
energy and a smooth, nonnegative, unbounded potential, we prove
the sharp LiebThirring estimate for the moments of some negative
powers of its eigenvalues. 
December 6, 2011

Adam Sierakowski
The Thompson group F and Fseparating actions
In a joined work with E. Kirchberg we study conditions ensuring
that a crossed product of a C*algebra by a discrete group is
strongly purely infinite (simple or nonsimple). In this (3nd)
talk I give an example of an action of the Thompson group F
on the real line R that is minimal and Fseparating and use
it to construct a nonminimal Fseparating action, thus answering
(in the positive) the question from my first talk on strongly
purely infinite crossed product. 
November 29 
Paul Baum 
November 24 
Adam Sierakowski
Strong pure infiniteness of crossed products, II
In a joined work with E. Kirchberg we study conditions ensuring
that a crossed product of a C*algebra by a discrete group is
strongly purely infinite (simple or nonsimple). In this (2nd)
talk I will discuss some of the application of this work to
specific crossed products. 
July 27, 2011 
Anamaria Savu
Closed and exact functions in the context of GinzburgLandau
models 
July 21, 2011

Cristian Ivanescu
Some remarks on the Cuntz semigroup 
July 19, 2011 
Norio Nawata
On his most recent work 
July 14, 2011 
Working Seminar 
July 12, 2011 
Working Seminar 
Tuesday July 5 at 2:10pm, in room 210, there will be a working
seminar.
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