2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153738We give a combinatorial rule for calculating the coefficients in the expansion of a product of two factorial Schur functions. It is a special case of a more general rule which also gives the coefficients in the expansion of a skew factorial Schur function. Multiplication rules for the Capelli operators and quantum immanants are also given.19 pages, LatexQuantum Algebra05E05 (Primary) 05E10, 17B10, 17B35, 20C30 (Secondary)text