The weak inhomogeneous Duffin–Schaeffer conjecture

Claimed, not checked 1 paper September 25, 2026
What the paper claims, in its own words

Proves that for every real shift γ and finite-valued ψ:N→[0,∞)\psi:\mathbb N\to[0,\infty), divergence of ∑qϕ(q)ψ(q)/q\sum_q\phi(q)\psi(q)/q implies ∥qx−γ∥<ψ(q)\|qx-\gamma\|\lt \psi(q) for infinitely many q, for almost every x. Here ϕ is Euler's totient and the norm is distance to the nearest integer. Numerators are unrestricted; no monotonicity or Diophantine condition on γ is needed.

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The original paper