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Title: Bicrossproducts of algebraic quantum groups
Authors: DELVAUX, Lydia 
Van Daele, A.
Wang, S.H.
Issue Date: 2013
Source: International journal of mathematics, 24 (1), p. 1-48
Abstract: Let A and B be two algebraic quantum groups. Assume that B is a right A-module algebra and that A is a left B-comodule coalgebra. If the action and coaction are matched, it is possible to define a coproduct Δ# on the smash product A#B making the pair (A#B,Δ#) into an algebraic quantum group. In this paper we study the various data of the bicrossproduct A#B, such as the modular automorphisms, the modular elements, . . . and we obtain formulas in terms of the data of the components A and B. Secondly, we look at the dual of A#B (in the sense of algebraic quantum groups) and we show it is itself a bicrossproduct (of the second type) of the duals b A and bB. We give some examples that are typical for algebraic quantum groups. In particular, we focus on the extra structure, provided by the integrals and associated objects. It should be mentioned that with examples of bicrossproducts of algebraic quantum groups, we do get examples that are essentially different from those commonly known in Hopf algebra theory.
Keywords: Multiplier Hopf algebras with integrals; algebraic quantum groups; bicrossproducts
Document URI:
ISSN: 0129-167X
e-ISSN: 1793-6519
DOI: 10.1142/S0129167X12501315
ISI #: 000316806500004
Category: A1
Type: Journal Contribution
Validations: ecoom 2014
Appears in Collections:Research publications

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