Singular-component conjecture for A-L measures on Dirichlet-regular Widom sets
Singular-component conjecture for A-L measures on Dirichlet-regular Widom sets
Let be a Dirichlet-regular Widom set with DCT, and let be the associated measure for some . The A-L condition means that the complex Martin function is normalized so that
Conjecture on singular A-L measures. There exists a Dirichlet-regular Widom set with DCT such that A-L holds and has a nontrivial singular component with respect to Lebesgue measure for some .
The preceding lemma shows that under A-L, Lebesgue measure is absolutely continuous with respect to , so the conjecture asks whether the converse can fail through a singular component of .
Progress summary
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Sources & referencesView supporting material
Primary source
Roman Bessonov, Milivoje Lukić and Peter Yuditskii, “Reflectionless canonical systems, II. Almost periodicity and character-automorphic Fourier transforms”, arXiv:2011.05266 (2020).
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