2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/106059Inspired by Menshov's representation theorem, we prove that there exists a sequence of frequecies such that any measurable (complex valued) function on R can be represented as a sum of almost everywhere convergent trigonometric series with these frequencies.7 pages. Should be identical to journal versionClassical Analysis and ODEstext