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Paper detail

Semisimple Hopf actions on Weyl algebras

We study actions of semisimple Hopf algebras H on Weyl algebras A over a field of characteristic zero. We show that the action of H on A must factor through a group algebra; in other words, if H acts inner faithfully on A, then H is cocommutative. The techniques used include reduction modulo a prime number and the study of semisimple cosemisimple Hopf actions on division algebras.

preprint2015arXivOpen access
Juan CuadraPavel EtingofChelsea Walton
math.QAmath.RA
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Juan CuadraPavel EtingofChelsea Walton

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