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New progress in map enumeration

Peter Zograf
(Steklov Mathematical Institute)
Torsdag, 27 august, 2015, at 16:15-17:15, in Aud. D3 (1531-215)
Counting problems for maps (ribbon graphs) and hypermaps (Grothendieck's dessins) will be discussed. It will be shown that the generating functions associated with map and hypermap count satisfy a number of remarkable integrability properties, like Virasoro constraints, evolution equation, KP hierarchy and topological recursion in the sense of Eynard-Orantin.
Organiseret af: QGM
Kontaktperson: Jørgen Ellegaard Andersen