Khintchine's theorem with a moving target
Khintchine's theorem with a moving target
Let be a sequence of real numbers and let be a function. Define
Khintchine's moving-target conjecture. If is decreasing and , then
This asks whether the divergence part of the inhomogeneous Khintchine theorem remains valid when the target center depends on the denominator. The fixed-target theorem is classical, while the moving-target version is posed as an open problem and is not known in one dimension.
Sources & referencesView supporting material
Primary source
Gilbert Michaud and Felipe A. Ramírez, “Toward Khintchine's theorem with a moving target: extra divergence or finitely centered target”, arXiv:2506.04187 (2025).
Progress summary
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