K-homology of the CAR algebra

preprint2001arXivOpen access

Abstract

We compare the K-theory and K-homology of the well known CAR algebra. While the K0K_0 group is infinitely generated, we shows that it pairs identically to zero with even Fredholm modules over the algebra. We show further that in fact the even K-homology is trivial, while the odd K-homology is very large. These results give some insight into the K-homology of AF-algebras.

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