Ribbon Hopf Superalgebras and Drinfel'd Double |
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Authors: | Jialei CHEN and Shilin YANG |
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Institution: | 1.College of Applied Sciences,Beijing University of Technology,Beijing,China |
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Abstract: | Finite dimensional ribbon Hopf (super) algebras play an important role in constructing invariants of 3-manifolds. In the present paper, the authors give a necessary and sufficient condition for the Drinfel’d double of a finite dimensional Hopf superalgebra to have a ribbon element. The criterion can be seen as a generalization of Kauffman and Radford’s result in the non-super situation to the ?2-graded situation, however, the derivation of the result in the ?2-graded case will be much more complicated. |
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Keywords: | Hopf superalgebras Drinfel''d double Ribbon element |
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