Department of

Mathematics

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

3:00 pm in 243 Altgeld Hall,Monday, April 24, 2017

The Relative Compactification of the Universal Centralizer(CANCELED)

Ana Balibanu (U Chicago)

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.

4:00 pm in 239 Altgeld Hall,Monday, April 24, 2017

Retirement Reception

Abstract: 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.

4:00 pm in 245 Altgeld Hall,Monday, April 24, 2017

Some algorithmic problems for presentations of groups

Sergei Ivanov (Department of Mathematics, University of Illinois)

5:00 pm in 241Altgeld Hall,Monday, April 24, 2017

Locally Compact Groups and Duality

Terence Harris (UIUC&NSW)

Abstract: I will talk about locally compact groups and duality, both in the commutative and then the noncommutative case.