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DTSTART:20200308T070000
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DTSTART;TZID=America/Toronto:20201126T130000
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URL:https://uwaterloo.ca/pure-mathematics/events/special-colloquium-28
SUMMARY:Special Colloquium
CLASS:PUBLIC
DESCRIPTION:LEI ALICE CHEN\, CALIFORNIA INSTITUTE OF TECHNOLOGY\n\n\"Action
 s of Homeo and Diffeo groups on manifolds\"\n\nIn this talk\, I discuss th
 e general question of how to obstruct and\nconstruct group actions on mani
 folds. I will focus on large groups\nlike Homeo(M) and Diff(M) about how t
 hey can act on another manifold\nN. The main result is an orbit classifica
 tion theorem\, which fully\nclassifies possible orbits. I will also talk a
 bout some low\ndimensional applications and open questions. This is a join
 t work with\nKathryn Mann.
DTSTAMP:20260606T040706Z
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