The unitary-invariance conjecture for partial ideals of CC^*-algebras

Let A\mathcal{A} be a unital CC^*-algebra. A partial ideal is a choice of a closed ideal IVI_V in each unital commutative sub-CC^*-algebra VAV\subset\mathcal{A} such that, whenever VVV\subset V', one has IV=IVVI_V=I_{V'}\cap V. A total ideal is a closed two-sided ideal of A\mathcal{A}. Unitary-invariance conjecture. A partial ideal of a unital CC^*-algebra arises from a total ideal if and only if it is fixed by every unitary rotation, meaning that IuVu=uIVuI_{uVu^*}=uI_Vu^* for every unitary uu. This criterion would characterize precisely the partial ideals corresponding to closed two-sided ideals and would imply the closed-sets extension conjecture. The source does not state a resolution.

Sources & referencesView supporting material

Primary source

Nadish de Silva, “From Topology to Noncommutative Geometry: K-theory”, arXiv:1408.1170 (2014).

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