Symmetry for finite dimensional Hopf algebras

Humphreys, J. E.

doi:10.1090/S0002-9939-1978-0485965-2

Symmetry for finite dimensional Hopf algebras
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Proc. Amer. Math. Soc. 68 (1978), 143-146 Request permission

Abstract:

This note refines criteria given by R. G. Larson and M. E. Sweedler for a finite dimensional Hopf algebra to be a symmetric algebra, with applications to restricted universal enveloping algebras and to certain finite dimensional subalgebras of the hyperalgebra of a semisimple algebraic group in characteristic p.

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