Velani's lacunary Khinchine convergence conjecture for the middle-third Cantor measure
Velani's lacunary Khinchine convergence conjecture for the middle-third Cantor measure
Let be the middle-third Cantor measure, and let denote its support. Let be an approximation function such that the sequence is non-increasing.
Velani's conjecture. If
then for -almost every , the inequality
holds at most finitely often.
This is a lacunary convergence analogue of Khinchine's theorem without requiring monotonicity of the approximation function at all integers. The source attributes it to Velani and supplies no resolution.
Sources & referencesView supporting material
Primary source
Han Yu, “Rational points near self-similar sets”, arXiv:2101.05910 (2021).
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