Equivariance and Imprimitivity for Discrete Hopf C*-Coactions

Details Equivariance and Imprimitivity for Discrete Hopf C*-Coactions Equivariance and Imprimitivity for Discrete Hopf C*-Coactions

1997-12-23

arxiv.org/abs/funct-an/9712010v2

Mathematics

Operator Algebras

LaTeX-2e, 19 pages, uses pb-diagram.sty. Propositions 4.1, 4.2, and Lemma 4.3 (which had a gap in its proof) have been replace

Scientific paper

Let U, V, and W be multiplicative unitaries coming from discrete Kac systems such that W is an amenable normal submultiplicative unitary of V with quotient U. We define notions for right-Hilbert bimodules of coactions of S_V and (S_V)^, their restrictions to S_W and (S_U)^, their dual coactions, and their full and reduced crossed products. If N(A) denotes the imprimitivity bimodule associated to any coaction of S_V on a C*-algebra A by Ng's imprimitivity theorem, then for any suitably nondegenerate injective coaction of S_V on a right-Hilbert A - B bimodule X we establish an isomorphism between two tensor product bimodules involving N(A), N(B), and certain crossed products of X. This can be interpreted as a natural transformation between two crossed-product functors.

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