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On the bijectivity of the antipode in a co-Frobenius Hopf algebra. (English) Zbl 1049.16021
Summary: We give a simplification for the proof of the bijectivity of the antipode in a co-Frobenius Hopf algebra, a result due to D. E. Radford [J. Algebra 46, 189-195 (1977; Zbl 0361.16002)].
MSC:
16W30 Hopf algebras (associative rings and algebras) (MSC2000)
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