We study the group of group-like elements of a weak Hopf algebra and derive an analogue of Radford's formula for the fourth power of the antipode S; which implies that the antipode has a finite order modulo, a trivial automorphism. We find a sufficient condition in terms of TrΓ°S 2 Γ for a weak Hopf
A Hopf Algebra Structure on Rational Functions
β Scribed by L. Verdestar
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 303 KB
- Volume
- 116
- Category
- Article
- ISSN
- 0001-8708
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β¦ Synopsis
We consider an indefinite inner product on the algebra of rational functions over the complex numbers, and we obtain a coproduct, which is dual of the usual multiplication, that gives a structure of infinitesimal coalgebra on the rational functions. We also obtain a representation of the finite dual of the classic polynomial Hopr algebra as a Hopr algebra of proper rational functions. " 1995 Academic Press. Inc
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