The spectral equality conjecture for weighted composition operators on Banach lattice subspaces

Let XX be a Banach lattice with Stonean compact KK, let YY be the subspace and TT the weighted composition operator from Proposition 1, and let SS be the corresponding weighted composition operator on C(M)C(\mathfrak{M}), with boundary space C()C(\partial). Assume the conditions of Proposition 1 and that the algebra A\mathcal{A} is almost localized in C(K)C(K). The spectral equality conjecture.

σ(T,Y)=σ(S,C(M)).\sigma(T,Y)=\sigma(S,C(\mathfrak{M})).

Moreover,

σap(T,Y)=σap(S,C()).\sigma_{ap}(T,Y)=\sigma_{ap}(S,C(\partial)).

The preceding propositions establish the inclusion from the spectrum of SS into that of TT, while examples show that equality can fail without an additional richness assumption on A\mathcal{A}. The conjecture asserts that almost localization in C(K)C(K) is sufficient for both the full-spectrum and approximate-point-spectrum equalities.

Sources & referencesView supporting material

Primary source

Arkady Kitover, “Spectrum of Weighted Composition Operators. Part II. Weighted composition operators on subspaces of Banach lattices”, arXiv:1205.2156 (2012).

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