11/12/2015, 14:30 hs, aula 15 FaMAF

Graded twisting of Hopf algebras and applications.

Expositora: Dr. Julien Bichon (Université Blaise Pascal, Clermont-Ferrand).

Resumen: I will describe the construction of the graded twisting of Hopf algebra by a cocentral action of discrete group, and present some applications: determination of the Hopf algebra quotients of a the graded twisting of commutative Hopf algebra and invariant theory. The talk is based on a joint work with Sergey Neshveyev and Makoto Yamashita.