Seminar Calendar
for events the day of Monday, April 24, 2017.

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Questions regarding events or the calendar should be directed to Tori Corkery.
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Monday, April 24, 2017

Symplectic and Poisson Geometry Seminar
3:00 pm   in 243 Altgeld Hall,  Monday, April 24, 2017
 Del Edit Copy
Submitted by icontrer.
 Ana Balibanu (U Chicago)The Relative Compactification of the Universal Centralizer(CANCELED)Abstract: Let $G$ be a semisimple algebraic group of adjoint type. The universal centralizer $\mathcal X$ is the family of centralizers in $G$ of regular elements in Lie($G$). This algebraic variety has a natural symplectic structure, obtained by Hamiltonian reduction from the cotangent bundle $T^ ∗G$. We introduce a relative compactification of $\mathcal X$ , in which every centralizer fiber is replaced by its closure in the wonderful compactification of $G$. We show that the symplectic structure extends to a log-symplectic structure on the boundary, using the logarithmic cotangent bundle of the wonderful compactification.

Math 499: Introduction to Graduate Mathematics
4:00 pm   in 245 Altgeld Hall,  Monday, April 24, 2017
 Del Edit Copy
Submitted by laugesen.
 Sergei Ivanov (Department of Mathematics, University of Illinois)Some algorithmic problems for presentations of groups

Retirement Reception
4:00 pm   in 239 Altgeld Hall,  Monday, April 24, 2017
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Submitted by seminar.
 Retirement ReceptionAbstract: A farewell open house for Chimesmaster Sue Woods will be held from 4-5 pm in 239 Altgeld Hall to recognize her many contributions to campus. Program at 4:30 pm.

Operator Algebra Learning Seminar
5:00 pm   in 241Altgeld Hall,  Monday, April 24, 2017
 Del Edit Copy
Submitted by mjunge.
 Terence Harris (UIUC&NSW)Locally Compact Groups and DualityAbstract: I will talk about locally compact groups and duality, both in the commutative and then the noncommutative case.