## Women Seminars Spring 2009 Schedule

Meeting: Friday 12PM in 347 Altgeld Hall
- January 23:
**Organization meeting**

- February 13:
**Mee
Seong Im**

**Title:** On Algebraic
Surfaces

**Abstract:** I will quickly
discuss the most important invariants on compact complex surfaces. There
is a fairly complete description of all classes of surfaces classified by
Federigo Enriques and Kunihiko Kodaira, except the ones of general type. I
will state the classification of algebraic surfaces and then discuss
moduli of surfaces of general type.

- February 27:
**Szu-Yin Yeh**

**Title:** Quasi-conformal
mappings and quasi-symmetric mappings.

**Abstract:** I will start
with an introduction of quasiconformal mappings and quasisymmetric
mappings. Then I will talk about their extension problems. For example,
when does a quasiconformal mapping on a domain D in the Euclidean space
R^n have a quasiconformal extension to R^n?

- March 20:
**Chia-Yen
Tsai**

**Title:** From your closet to
Teichmuller space.

**Abstract:** This will be an
introduction to Teichmuller space and the mapping class group. Instead of
giving definitions, I will explain how to "see" the space. Continuing the
same idea, we will see how the mapping class group acts on Teichmuller
space. In particular, we will talk about the action of pseudo-Anosov
mapping classes, which are non-periodic and irreducible. To obtain more
intuition, I will construct some pseudo-Anosov mapping classes. On the
other hand, we will use couple methods to check if a given mapping class
is pseudo-Anosov.

- April 3:
** Aleksandra (Ola) Kwiatkowska **

**Title:** Actions and Boolean
actions of Polish groups.

**Abstract:** I will first
give some examples of Polish groups. We consider actions of Polish groups
on a measure space and measure preserving Boolean actions (we act on
measurable sets modulo null sets instead of on points). The natural
question is whether a Boolean action arises from an action. I will give an
overview of some known results.