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A bialgebra that admits a Hopf-Galois extension is a Hopf algebra |
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| Authors: | Peter Schauenburg |
| Institution: | Department of Mathematics University of Southern California, Los Angeles, California 90089 |
| Abstract: | Let  be a commutative ring. Assume that  is a  -bialgebra, and  is an  -Galois extension of its coinvariant subalgebra  . Provided  is faithfully flat over  , we show that  is necessarily a Hopf algebra. |
| Keywords: | |
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