学术报告
Convexity properties of presymplectic Hamiltonian actions,Reyer Sjamaar (Cornell University)
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时间： 2017-02-03
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题目：Convexity properties of presymplectic Hamiltonian actions
报告人：Reyer Sjamaar (Cornell University)
摘要：A celebrated theorem in symplectic geometry, due to Atiyah, Guillemin-Sternberg and Kirwan, states that the image of the moment map of a compact Lie group action is a convex polytope. I will present a generalization of this result, obtained in joint work with Yi Lin, to compact Lie group actions on presymplectic manifolds. Our result implies convexity theorems for actions on contact manifolds, cosymplectic manifolds, as well as certain symplectic "generalized manifolds".
时间：2017年2月3日（周五）上午10:30-12:00
地点：首都师范大学新教二北楼509教室
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