Offline-Difference on Jasperhttps://jasper-aa64.github.io/tags/offline-difference/Recent content in Offline-Difference on JasperHugoen-usTue, 28 Apr 2026 00:00:00 +0800Number Theory #0: Common Formulae — Legendre's Formula & Divisor Convolutionshttps://jasper-aa64.github.io/posts/number-theory-0-common-formulae/Tue, 28 Apr 2026 00:00:00 +0800https://jasper-aa64.github.io/posts/number-theory-0-common-formulae/Legendre’s formula, divisor and multiple convolutions in O(n log n), offline-difference batch processing for H(n)=Σf(d)g(⌊n/d⌋).