The invariant partial ideal conjecture for C*-algebras

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Let A\mathcal{A} be a C∗C^*-algebra. A partial ideal assigns an ideal π(V)\pi(V) to each commutative C∗C^*-subalgebra V⊂AV\subset\mathcal{A}, compatibly with inclusions. It is invariant when, for every unitary u∈Au\in\mathcal{A} and every such VV,

uπ(V)u∗=π(uVu∗).u\pi(V)u^*=\pi(uVu^*).

The invariant partial ideal conjecture. A partial ideal of A\mathcal{A} arises from a total ideal if and only if it is an invariant partial ideal. Consequently, the map I↦πII\mapsto\pi_I is a bijective correspondence between total ideals and invariant partial ideals. This conjecture characterizes which contextwise ideal data come from genuine closed, two-sided ideals; the supplied text gives no resolution, while related structural results are established for von Neumann algebras.

References

Primary source

Nadish de Silva and Rui Soares Barbosa, “Contextuality and noncommutative geometry in quantum mechanics”, arXiv:1806.02840 (2018).

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