Strong Elliott conjecture for K-pure real-rank-zero C*-algebras

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Let AA be a separable, nuclear, K-pure C∗{\rm C}^*-algebra of real rank zero and stable rank one. Let (K‾(A),K‾(A)+,ΣA)Λ({\rm\underline{K}}(A),{\rm\underline{K}}(A)_+,\Sigma A)_{\rm \Lambda} consist of total K-theory, its positive cone, and the scale, with the indicated coefficient structure. Strong Elliott conjecture. The invariant

(K‾(A),K‾(A)+,ΣA)Λ({\rm\underline{K}}(A),{\rm\underline{K}}(A)_+,\Sigma A)_{\rm \Lambda}

is complete for such C∗{\rm C}^*-algebras. This is presented as a proposed refinement after the unrestricted real-rank-zero classification claim is disproved; the paper proves classification results for K-pure extensions but does not establish this full formulation.

References

Primary source

Qingnan An and Zhichao Liu, “Total Cuntz semigroup, Extension and Elliott Conjecture with Real rank zero”, arXiv:2303.06835 (2023).

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