Universal property of equivariant KK-theory, by Klaus Thomsen
In this paper we prove that the equivariant KK-theory is the universal
functor from the category for functors from G-C*-algebras to abelian groups
which are stable, homotopy invariant and split-exact. The group can be any
locally compact second countable group.
Klaus Thomsen <matkt@mi.aau.dk>