B. Drabant

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math.QA1998

Actions of Multiplier Hopf Algebras

B. Drabant, A. Van Daele, Y. Zhang

For an action $α$ of a group $G$ on an algebra $R$ (over $C$ ), the crossed product $R \times_{α} G$ is the vector space of $R$ -valued functions with finite support in $G$ , togethe…

math.QA1998

Cross Product Bialgebras - Part I

Yuri N. Bespalov, Bernhard Drabant

The subject of this article are cross product bialgebras without co-cycles. We establish a theory characterizing cross product bialgebras universally in terms of projections and in…