Recasting the Elliott conjecture

Andrew S. Toms, Francesc Perera

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Resum

Let A be a simple, unital, finite, and exact C*-algebra which absorbs the Jiang-Su algebra tensorially. We prove that the Cuntz semigroup of A admits a complete order embedding into an ordered semigroup which is obtained from the Elliott invariant in a functorial manner. We conjecture that this embedding is an isomorphism, and prove the conjecture in several cases. In these same cases- stable algebras all-we prove that the Elliott conjecture in its strongest form is equivalent to a conjecture which appears much weaker. Outside the class of -stable C*-algebras, this weaker conjecture has no known counterexamples, and it is plausible that none exist. Thus, we reconcile the still intact principle of Elliott's classification conjecture-that -theoretic invariants will classify separable and nuclear C*-algebras-with the recent appearance of counterexamples to its strongest concrete form. © Springer-Verlag 2007.
Idioma originalAnglès
Pàgines (de-a)669-702
RevistaMathematische Annalen
Volum338
DOIs
Estat de la publicacióPublicada - 1 de jul. 2007

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