Quasidiagonal extensions and sequentially trivial asymptotic homomorphisms, by Vladimir Manuilov and Klaus Thomsen

We obtain a description of the group Pext(K_*(A),K_*(B)) in terms of extensions of SA by B. For this purpose we introduce the notion of asymptotic homomorphisms which are sequentially trivial.


Vladimir Manuilov <manuilov@mech.math.msu.su>
Klaus Thomsen <matkt@imf.au.dk>