On a technical theorem of Kasparov
A short proof of the technical theorem underlying G. G. Kasparov's KK- theory is presented. The theorem is concerned with the separation of two orthogonal subalgebras of an outer multiplier algebra M(D)/D by an element in a relative commutant. The proof given here is a simple application of the notion of quasicentral approximate unit.
scientific article; zbMATH DE number 4011219
scientific article