Department of

# Mathematics

Seminar Calendar
for events the day of Friday, January 20, 2006.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
    December 2005           January 2006          February 2006
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1  2  3    1  2  3  4  5  6  7             1  2  3  4
4  5  6  7  8  9 10    8  9 10 11 12 13 14    5  6  7  8  9 10 11
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18 19 20 21 22 23 24   22 23 24 25 26 27 28   19 20 21 22 23 24 25
25 26 27 28 29 30 31   29 30 31               26 27 28



Friday, January 20, 2006

11:00 am in 2035 Beckman Institute,Friday, January 20, 2006

#### Organizational Meeting

###### Robert Fossum and Yi Ma (UIUC ECE)

4:00 pm in 245 Altgeld Hall,Friday, January 20, 2006

#### Uniformization and Rigidity in Conformal Geometry

###### Sergiy A. Merenkov (University of Michigan)

Abstract: I will discuss recent results on quasisymmetric rigidity of Sierpinski carpets. One such result states that every quasisymmetric self-map of the Sierpinski carpet fractal is an isometry, i.e. a rotation or a reflection. The questions are motivated by geometric group theory, specifically by the study of the boundaries at infinity of Gromov hyperbolic groups. Since the methods that were used to approach these questions come from complex analysis, I will also present an overview of classical uniformization, as well as more recent packing results for circles and other shapes. Hosts: J.-M. Wu and J. Tyson

4:00 pm in 141 Altgeld Hall,Friday, January 20, 2006

#### Organizational Meeting

Abstract: This meeting is for discussion of topics to be treated in the seminar during the semester. It would be helpful if interested participants bring to the meeting copies of any papers they might propose for sustained focus by the seminar.