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Коллоквиум лаборатории Чебышева: Roman Mikhailov (Moscow) "A combinatorial description of homotopy groups of spheres"
by Egor Pifagorov - Tuesday, 22 May 2012, 05:50 PM
 
Коллоквиум лаборатории Чебышева 14-го июня.


17:00 Roman Mikhailov (Moscow) "A combinatorial description of homotopy groups of spheres"

The talk is about group theoretical description of homotopy groups of spheres. For every n>k>2, we construct a group G by explicit generators and relators such that the center of G is isomorphic to the n-th homotopy group of the k-dimensional sphere.