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An invitation to combinatorial Hopf algebras

Ulrich Krähmer
Institution: 
TU Dresden
Location: 
Luigi Stasi Seminar Room, ICTP
Schedule: 
Thursday, October 10, 2019 - 16:00
Abstract: 

I will tell you what the incidence coalgebra of a category is, and when a monoidal product on the category turns it into a bialgebra. Trees, skew shapes and bigraphs yield examples. The main result describes the overlap with the theory of Hopf quivers which is surprisingly (for me) singular. Based on joint work with Lucia Rotheray.

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