2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/156007The product of any finite number of factorial Schur functions can be expanded as a $Z[y]$-linear combination of Schur functions. We give a rule for computing the coefficients in such an expansion which generalizes a specialization of the Molev-Sagan rule, which in turn generalizes the classical Littlewood-Richardson rule.10 pages; v2: result generalized slightly, references added, minor corrections in section 4CombinatoricsRepresentation Theory05E05; 05E10; 05E15; 17B10text