The equivariant classification conjecture for graph CC^*-algebras

Let EE and FF be finite graphs, and let C(E)C^*(E) and C(F)C^*(F) be their graph CC^*-algebras with gauge circle actions. Let K0TK^{\mathbb T}_0 denote equivariant KK-theory, viewed as an ordered Z[x,x1]\mathbb Z[x,x^{-1}]-module.

Equivariant classification conjecture. There is an order-preserving Z[x,x1]\mathbb Z[x,x^{-1}]-module isomorphism

ϕ:K0T(C(E))K0T(C(F)),\phi:K^{\mathbb T}_0(C^*(E))\to K^{\mathbb T}_0(C^*(F)),

with ϕ([C(E)])=[C(F)]\phi([C^*(E)])=[C^*(F)], if and only if C(E)C^*(E) and C(F)C^*(F) are isomorphic by an isomorphism respecting the gauge action.

This is the analytic counterpart of the graded classification conjecture for Leavitt path algebras, using the identification between graded and equivariant KK-theory. The source gives no resolution status.

Sources & referencesView supporting material

Primary source

Roozbeh Hazrat, Huanhuan Li and Raimund Preusser, “Bergman algebras: The graded universal algebra constructions”, arXiv:2403.01703 (2024).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.