Lukic's decomposition conjecture for higher-order Szegő sum rules
Lukic's decomposition conjecture for higher-order Szegő sum rules
Let be the density of the absolutely continuous part of a measure on the unit circle, let be its Verblunsky-coefficient sequence, and let be the left shift operator, . For distinct and strictly positive integers , let . Lukic's conjecture. The finiteness condition
is equivalent to the existence of sequences such that
with
and
for every . This refinement replaces the false pair of global conditions in Simon's conjecture and is presented as an improved conjecture.
Sources & referencesView supporting material
Primary source
Zhihua Du, “Sum rules and Simon spectral gem problem on higher order Szegő theorems”, arXiv:2312.01323 (2023).
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