Events by date

Wednesday, August 10, 2016

Wednesday, August 10, 2016 — 11:00 to 11:00 AM EDT

Jonathan Herman, Department of Pure Mathematics, University of Waterloo

“The Marsden-Weinstein Theorem and Some Corollaries”

We will clean up the proof given last talk of the Marsden-Weinstein theorem. We will then prove both the Jacobi-Liouville theorem and the Krillov-Kostant-Souriau theorem as corollaries. Time permitting, we will introduce multi-momentum maps and their existence/uniqueness.

Wednesday, August 10, 2016 — 3:30 PM EDT

Arthur Mehta, Department of Pure Mathematics, University of Waterloo

"Positivstellensatz and semi-pre-C*-algebras"

A positivstellensatz can loosely be described as a characterisation of elements a in an algebra A that are positive under a certain class of representations. In this talk we review some classical results regarding positive polynomials and then look at a series of Positivstellensatz that can be obtained by using the framework of semi-pre-C*-algebras.

MC 5501

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