Classification of $\mathcal {O}_\infty $-Stable $C^*$-Algebras Seymour B. Sarason They possess a rich combinatorial

They possess a rich combinatorial structure

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Classification of $\mathcal {O}_\infty $-Stable $C^*$-Algebras Seymour B. Sarason They possess a rich combinatorialPresent a proof of Kirchberg's classification theorem: two separable, nuclear, $\mathcal {O}_\infty $ Stable $C^*$ algebras are stably isomorphic if and only if they are idealrelated KK equivalent. In particular, this provides a more elementary proof of the Kirchberg Phillips theorem which is isolated in the paper to increase readability of this important special case.