#### Document Type

Article

#### Abstract

Our objective in this note is to outline a number of results concerning the Kasparov groups *Ext*(*A,B*) which are analogous to known information about the Brown, Douglass, and Fillmore (BDF) theory regarding groups which classify extensions of the form 0 → *B* ⊗ *K* → *E* → *A* → 0. These results enable one to compute the groups with relatively mild restrictions on the *C**-algebras *A* and *B*. This in turn should make it possible to analyze the way in which a wide variety of *C**-algebra extensions are put together, at least stably.

#### Disciplines

Algebra

#### Recommended Citation

J. Rosenberg and C. Schochet, The classification of extensions of C*-algebras, *Bulletin of the American Mathematical Society* **4(1)** (1981), 105-110.

## Comments

First published in the

Bulletin of the American Mathematical Society4(1)(1981, http://dx.doi.org/10.1090/S0273-0979-1981-14873-4), published by the American Mathematical Society.