[Geometry, Topology and Dynamics Seminar] Ramified covering maps of spheres and arboreal polygons by Dr. Michael Kapovich (UC Davis)


Thursday, February 21, 2019 - 16:00 to 17:00


Lab 3, B700


Abstract: I will explain what are the necessary and sufficient conditions for the existence of a ramified covering map of 2-spheres with prescribed ramification data and why do these conditions match the existence conditions for polygons in simplicial trees with the given side-lengths. 

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