The slice-measure inequalities conjecture for two-variable weighted shifts

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Let T(T1,T2)H0\mathbf{T}\equiv \mathbf{(}T_{1},T_{2})\in \mathfrak{H}_{0} be the 22-variable weighted shift whose weight diagram is given by Figure 1(i). For each vertical or horizontal slice of T\mathbf{T}, let its associated subnormal 11-variable weighted shift have a Berger measure, and let ψk\psi_k denote a linear combination of such Berger measures.

Slice-measure inequalities conjecture. The subnormality of T\mathbf{T} is determined by a countable collection of inequalities

ψk0.\psi_k\geq 0.

This conjecture proposes a countable measure-theoretic criterion for subnormality using only Berger measures from the one-variable slices of the two-variable weighted shift. The supplied text does not state whether the conjecture has been resolved.

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Sources & referencesView supporting material

Primary source

Raul E. Curto, Sang Hoon Lee and Jasang Yoon, “Reconstruction of the Berger measure when the core is of tensor form”, arXiv:0710.3977 (2007).

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