2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78604The present note is an answer to complains of E.Weitz on [Sh:371]. We present a corrected version of a part of chapter VIII of " Cardinal Arithmetic".Done in June 1995LogicAlso quite large b subseteq pcf(a) behave nicelytext