Applied Analysis Seminar
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Posted September 23, 2016

3:30 pm - 4:30 pm Lockett 233
Viktoria Kuehner, University of Tuebingen

Semiflows and Koopmansemigroups

We characterize Koopman semigroups $(T(t))_{t\geq 0}$ on $\mathrm{L}^1(X,\Sigma,\mu)$, where $(X,\Sigma,\mu)$ is a standard probability space, induced by a measurable semiflow $(\varphi_t)_{t\geq 0}$ on $X$, by means of their generator $(A,D(A))$. We then construct a topological model $(\psi_t)_{t\geq 0}$ of that semiflow on a compact space $K$ such that the Koopman semigroup induced by the continuous semiflow $(\psi_t)_{t\geq 0}$ is isomorphic to the original semigroup.

Student Algebra Seminar
Graduate Student Algebra and Number Theory Seminar

Posted September 27, 2016

3:30 pm - 4:30 pm Lockett 233
Bach Nguyen, LSU

Orders: "You are out of order!"

Abstract: We will define orders and discuss examples and some of their important properties.

Algebra and Number Theory Seminar
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Posted September 13, 2016

3:30 pm - 4:20 pm Lockett 284
Fang-Ting Tu, LSU Mathematics Department

TBD

Topology Seminar
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Posted September 22, 2016

3:30 pm - 4:20 pm Lockett 233
Fang Sun, Tulane University

TBD