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On Coquasitriangular Bialgebras

Konrad Schmuedgen
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Abstract

The paper deals with three topics on coquasitriangular bialgebras. A characterization of universal r-forms in terms of Yetter-Drinfeld modules is given. All universal r-forms for the coordinate Hopf algebras of the quantum groups GL_q(N), SL_q(N), O_q(N) and Sp_q(N) are described. It is well-known that the square of the antipode of a coquasitriangular Hopf algebra A with universal r-form r can be expressed by means of the linear functional f_r(a)=r(a_{(1)}\otimes S(a_{(2)})), a\in A. For the standard compact matrix groups the functional f_r is related to the Woronowicz modular character f_{-2}.

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BibTeXRIS

Konrad Schmuedgen. 1998-12-01. On Coquasitriangular Bialgebras. https://arxiv.org/abs/math/9812004

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