We bring together ideas in analysis on Hopf f-algebra actions on II 1 subfactors of finite Jones index [9,24] and algebraic characterizations of Frobenius, Galois and cleft Hopf extensions [3,13,14] to prove a non-commutative algebraic analogue of the classical theorem: a finite degree field extensi
On the Classification of Strongly Graded Hopf Algebras
โ Scribed by Antonio M. Cegarra
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 113 KB
- Volume
- 251
- Category
- Article
- ISSN
- 0021-8693
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โฆ Synopsis
The main result in this paper states that every strongly graded bialgebra whose component of grade 1 is a finite-dimensional Hopf algebra is itself a Hopf algebra. This fact is used to obtain a group cohomology classification of strongly graded Hopf algebras, with 1-component of finite dimension, from known results on strongly graded bialgebras. ๏ฃฉ 2002 Elsevier Science (USA)
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