Ballester Bolinches, AdolfoCalvo Lopez, ClaraEsteban Romero, Ramón2013-01-252013-01-252003-120004-9727https://riunet.upv.es/handle/10251/19031This paper has been published in Bulletin of the Australian Mathematical Society, 68(3):461-470 (2003). Copyright 2003 by Australian Mathematical Publishing Association Inc and Cambridge University Press Journals. The final publication is available at http://dx.doi.org/10.1017/S0004972700037862 http://journals.cambridge.org/abstract_S0004972700037862[EN] It is shown in this paper that if X is a class of simple groups such that pi(X) = char X, the X-saturated formation H generated by a finite group cannot be expressed as the Gaschütz product F o G of two non-X-saturated formations if H = G. It answers some open questions on products of formations. The relation between omega-saturated and X-saturated formations is also discussed.461-470Reserva de todos los derechosFinite groupX-local formationSaturated formationX-saturated formationComposition formationOmega-saturated formationMATEMATICA APLICADAArtículo10.1017/S0004972700037862Abierto