Seminar Calendar
for events the day of Friday, October 10, 2008.

     .
events for the
events containing  

(Requires a password.)
More information on this calendar program is available.
Questions regarding events or the calendar should be directed to Tori Corkery. 
    September 2008          October 2008          November 2008    
 Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
     1  2  3  4  5  6             1  2  3  4                      1
  7  8  9 10 11 12 13    5  6  7  8  9 10 11    2  3  4  5  6  7  8
 14 15 16 17 18 19 20   12 13 14 15 16 17 18    9 10 11 12 13 14 15
 21 22 23 24 25 26 27   19 20 21 22 23 24 25   16 17 18 19 20 21 22
 28 29 30               26 27 28 29 30 31      23 24 25 26 27 28 29
                                               30

Friday, October 10, 2008

Women in Mathematics
12:00 pm   in 148 Henry,  Friday, October 10, 2008
 Del 
 Edit 
 Copy 
Submitted by ctsai6.
Lale Ozkahya (UIUC Math)
Cycles in Hypercube
Abstract: $Q_n$ denotes the n-dimensional hypercube, which is the graph on vertex-set $\{0,1\}^n$ and edge-set assigned between pairs differing in exactly one coordinate. Given graphs P and Q, the generalized Turan number ex(Q,P) denotes the maximum number of edges of a P-free subgraph of Q. Erd\"os (1984) conjectured that $ex(Q_n,C_4) = (1/2+o(1))e(Q_n)$, where $e(Q_n)$ is the number of edges in $Q_n$. We consider the case when P is a cycle of length 4k+2 for positive integer k and Q is $Q_n$. This is joint work with Zolt\'an F\"uredi.

Seminar on Sheaves of Dimension 1
4:00 pm   in 241 Altgeld Hall,  Friday, October 10, 2008
 Del 
 Edit 
 Copy 
Submitted by sheshman.
Artan Sheshmani (Department of Mathematics, University of Illinois)
Pandharipande-Thomas theory of stable pairs in the derived category, Part 1
Abstract: Let X be a nonsingular projective 3-fold, one can enumerate pairs (C,D) in which C is an embedded curve in X and D \subset C is a divisor. In this theory one views such pairs as complexes in the derived category of coherent sheaves over X and by constructing the associated moduli space of such pairs and virtual fundamental class one computes the invariants which conjecturally are equivalent to the Gromov-Witten and Donaldson_Thomas invariants after a universal transformation. In this talk I will give a brief review of PT theory.

Model Theory and Descriptive Set Theory
4:00 pm   in 347 Altgeld Hall,  Friday, October 10, 2008
 Del 
 Edit 
 Copy 
Submitted by vlopes2.
Isaac Goldbring (Department of Mathematics, University of Illinois)
U-minimal valued fields are algebraically closed (cont.)
Abstract: In this talk, I will prove one of the blackboxes from Tuesday's talk, namely that a u-minimal field is dense (with respect to the valuation topology) in its algebraic closure.