“…[13], [6]. Then Pext(K * (A), K * −1 (B)) can be realized as a subgroup of Ext −1 (SA, B), and it was shown in [12] that the isomorphism CH takes this subgroup onto the range of It follows from this, the exactness of the diagram(s) in Theorem 6.1 and the version of the UCT from [6], that the range of the map d •B in Theorem 6.1 can be identified with KL (A, B). In other words, by unsplicing the first six-term exact sequence of Theorem 6.1 we obtain an extension of groups which is the same as the extension in the UCT theorem, in the form it was given in [6].…”