**Winter Term, 2009
**

Tuesday 6th October

Pedro J. Miana (Zaragoza, Spain)

*Fractional convolution algebras and semigroup theory*

Tuesday 13th October

Nicholas Young (Leeds)

*Boundary behaviour of functions in the Schur class of the bidisc*

Tuesday 20th October

Paul Mitchener (Sheffield)

*Notions of descent in coarse geometry*

Tuesday 27th October, **at 4pm**

Joachim Zacharias (Nottingham)

*Nuclear dimension of C*-algebras*

Tuesday 3rd November

A.T.M. Lau (Edmonton, Canada)

*Fixed point property for Banach algebras associated to locally compact
groups*: "In this talk, I will discuss various Banach algebras
associated to a locally compact group with the weak or weak*-fixed point
property for non-expansive mappings."

Tuesday 10th November, **Roger Stevens LT 08**

Alex Belton (Lancaster)

*Quantum Feynman-Kac perturbations*: "Given
a one-parameter group of automorphisms of a von Neumann algebra,
stochastic calculus may be used to obtain various semigroups on the
algebra, by randomising and then averaging. For example, translation
gives rise to the heat semigroup via Brownian motion. We will explain
this procedure and how it applies to classical and quantum stochastic
processes."

Tuesday 17th November

Pamela Gorkin (Bucknell, USA)

*The Numerical Range: What's interpolation got to do with it?*:
"Every degree three Blaschke product that maps the origin
to itself can be associated in a unique way with an ellipse with
foci at the nonzero zeros of the Blaschke product. We discuss
the degree n case as well as the situation for infinite Blaschke
products. The answer to this question has implications to the
study of numerical ranges as well as a well-known conjecture
known as the Sendov conjecture. This talk is based on joint work
with I. Chalendar and J. R. Partington as well as U. Daepp and
K. Voss."

Tuesday 24th November **at 4pm**

John Weir (King's College London)

*Real eigenvalues of a non-self-adjoint operator*

Tuesday 1st December **at 4pm**

Sergei Rogosin (Minsk, Belarus)

*Wavelet Analysis and its Applications*:
"General ideas of continuous and discrete wavelet
transforms will be discussed.
Main attention will be paid to modern applications of the
wavelet analysis in creation and study of the mathematical
models in medicine, economics and mathematical physics."

Tuesday 8th December

Yury Turovskii (Baku, Azerbaijan)

**Cancelled**

**Monday** 14th December, **Roger Stevens LT18**

David Blecher (Houston, USA)

*Dual operator algebras and systems*:
"In the first part we will first introduce the structures
we will be interested in, namely operator spaces, operator systems,
operator algebras, and unital operator spaces. Then we discuss
the duality theory of these objects. We give some open questions.
In the second part we will focus on a special class of dual operator
algebras, Arveson's noncommutative version of the Hardy spaces of the
disk."

Unless otherwise specified, seminars start at 3.30 p.m. Anybody interested is welcome to attend. Leeds meetings normally take place in MALL 2, School of Mathematics, University of Leeds. (There are campus maps here and a list of hotels here.)

Seminar organizer Matthew Daws.

Programme for Summer term 2009 Programme for Spring term 2010

The address of this page is
**http://www.maths.leeds.ac.uk/pure/analysis/yfag_2009c.html**

Last updated on December 7th 2009 by Matthew Daws.