Equivalence and Continuous Bundles of C � Algebras
نویسنده
چکیده
A structural description is given of the separable C algebras that are contractible in KK theory or E theory Subsequently it is shown that two separable C algebras A and B are KK equivalent if and only if there is a bundle of separable C algebras over which is piecewise trivial with no more than six points of non triviality such that the kernel of each ber map is KK contractible all ber maps are semi split and such that the bers at the endpoints of the interval are A and B
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