# Calendar

Sun Mon Tue Wed Thu Fri Sat
Colloquium: Leslie Hogben (Iowa State U.) 3:00 pm
Colloquium: Leslie Hogben (Iowa ... @ Post 127
Feb 1 @ 3:00 pm – 4:00 pm
Speaker: Leslie Hogben Iowa State University and American Institute of Mathematics Title: Power domination and zero forcing: Using graphs to model real-world problems Abstract: A graph $G = (V, E)$ is a set of vertices[...]
Logic seminar: David Ross 2:30 pm
Feb 2 @ 2:30 pm – 3:20 pm
This semester the Logic Seminar continues at a new day and time, Fridays at 2:30 in Keller 314. For the first meeting this Friday I will (probably) speak about _Skolem polynomials_: Abstract: Over 100 years[...]
Logic seminar: Mushfeq Khan 2:30 pm
Feb 9 @ 2:30 pm – 3:30 pm
Mushfeq Khan will speak on amenability and symbolic dynamics. As usual the seminar is in Keller 314.
Talk Story with Pavel Guerzhoy 3:30 pm
Feb 9 @ 3:30 pm – 4:30 pm
A Talk Story in Number Theory. There is a childish misconception that the occupation of a professional mathematicians is to operate with very big numbers. That is presumably primarily applicable to those who do Number[...]
Number Theory Seminar: Claus Sorensen (UCSD) 2:30 pm
Number Theory Seminar: Claus Sor... @ To be determined
Feb 13 @ 2:30 pm – 3:30 pm
Speaker: Claus Sorensen (UCSD) Title: Local Langlands in rigid families Abstract: The local Langlands correspondence attaches a representation of GL(n,F) to an n-dimensional representation of the Galois group of F (a local field). In the[...]
Logic seminar: David Webb 2:30 pm
Feb 16 @ 2:30 pm – 3:30 pm
Continuing the theme of symbolic dynamics, I will demonstrate a proof of Simpson’s result that “Entropy = Dimension” for N^d and Z^d, and discuss some of Adam Day’s work generalizing these results to amenable groups.
Logic seminar: Umar Gaffar 2:30 pm
Logic seminar: Umar Gaffar @ Keller 314
Feb 23 @ 2:30 pm – 3:30 pm
This week Umar Gaffar will give Shelah’s proof of the following result: Let $\lambda$ be the cardinality of an ultraproduct of finite sets. If $\lambda$ is infinite then $\lambda=\lambda^{\aleph_0}$.
Colloquium: Rohit Nagpal (U. Chicago) 3:30 pm
Colloquium: Rohit Nagpal (U. Chi... @ Keller 401
Feb 23 @ 3:30 pm – 4:30 pm
Speaker: Rohit Nagpal Title: Stability in the high dimensional cohomology of certain arithmetic groups Abstract: Borel-Serre duality relates high dimensional cohomology of arithmetic groups to the low dimensional homology of these groups with coefficients in[...]
Colloquium: Khrystyna Serhiyenko (UC Berkeley) 3:30 pm
Feb 26 @ 3:30 pm – 4:30 pm
Speaker: Khrystyna Serhiyenko  (UC Berkeley) Title: Frieze patterns  Abstract: Frieze is a lattice of positive integers satisfying certain rules.  Friezes were first studied by Conway and Coxeter in 1970′s, but they gained fresh interest in the[...]