Department of

# Mathematics

Seminar Calendar
for events the day of Thursday, January 19, 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
Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
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
11 12 13 14 15 16 17   15 16 17 18 19 20 21   12 13 14 15 16 17 18
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



Thursday, January 19, 2006

1:00 pm in 347 Altgeld Hall,Thursday, January 19, 2006

#### Organisational meeting

Abstract: We will be looking for speakers in the seminar.

2:00 pm in 241 Altgeld Hall,Thursday, January 19, 2006

#### Organizational Meeting

Abstract: The algbraic number theory seminar will continue themes from the Fall 2005 topics courses on Elliptic Curves (Duursma) and Iwasawa Theory (Ullom). There is no preset program, we plan to follow the preferences of the audience one seminar at a time. A first organizational meeting is scheduled for January 19.

4:00 pm in 245 Altgeld Hall,Thursday, January 19, 2006

#### Modular, log canonical, and tropical compactifications

###### Evgueni Tevelev (University of Texas at Austin )

Abstract: The celebrated moduli space of stable curves of Grothendieck, Knudsen, and Mumford admits a straightforward generalization in all dimensions: the moduli space of stable pairs introduced by Kollar, Shepherd-Barron, and Alexeev. Unfortunately, their construction is not effective and relies on the (still conjectural) Minimal Model Program. Using the classical example of a cubic surface with 27 lines, I'll describe joint work with Hacking and Keel where we construct the moduli space of stable Del Pezzo surfaces and describe its boundary using non-archimedean amoebas. This is one instance of the beautiful connection between the Mori theory and the "tropical geometry". Host: S. Katz