2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/68908In this paper, by using an almost increasing and $δ$-quasi-monotone sequence, a general theorem on $ϕ-{\mid{C},α\mid}_k$ summability factors, which generalizes a result of Bor \cite{3} on ${ϕ-\mid{C},1\mid}_k$ summability factors, has been proved under weaker and more general conditions.4 pagesClassical Analysis and ODEstext