A characterization of KK-theory

64Citations
Citations of this article
10Readers
Mendeley users who have this article in their library.

Abstract

We characterize the KK-groups of G. G. Kasparov, along with the Kasparov product KK(A, B) × KK(B, C) → KK(A, C), from the point of view of category theory (in a very elementary sense): the product is regarded as a law of composition in a category and we show that this category is the universal one with "homotopy invariance", "stability" and "split exactness". The third property is a weakened type of half-exactness: it amounts to the fact that the KK-groups transform split exact sequences of C*-algebras to split exact sequences of abelian groups. The method is borrowed from Joachim Cuntz’s approach to KK-theory, in which cycles for KK(A, B) are regarded as generalized homomorphisms from A to B: the results follow from an analysis of the Kasparov product in this light. © 1987 by Pacific Journal of Mathematics.

Cite

CITATION STYLE

APA

Higson, N. (1987). A characterization of KK-theory. Pacific Journal of Mathematics, 126(2), 253–276. https://doi.org/10.2140/pjm.1987.126.253

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free