Quasitriangular and differential structures on bicrossproduct Hopf algebras

E. Beggs; S. Majid

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arXiv · q-alg/9701041

Quasitriangular and differential structures on bicrossproduct Hopf algebras

E. Beggs·S. Majid

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Abstract

Let X=GM be a finite group factorisation. It is shown that the quantum double D(H) of the associated bicrossproduct Hopf algebra $H=kM\cobicross k(G)$ is itself a bicrossproduct $kX\cobicross k(Y)$ associated to a group YX, where $Y=G\times M^{op}$. This provides a class of bicrossproduct Hopf algebras which are quasitriangular. We also construct a subgroup $Y^θX^θ$ associated to every order-reversing automorphism $θ$ of X. The corresponding Hopf algebra $kX^θ\cobicross k(Y^θ)$ has the same coalgebra as H. Using related results, we classify the first order bicovariant differential calculi on H in terms of orbits in a certain quotient space of X.

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BibTeX RIS

E. Beggs, S. Majid. 1997-01-30. Quasitriangular and differential structures on bicrossproduct Hopf algebras. https://arxiv.org/abs/q-alg/9701041

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