fact: Definition fgscale c g : {malg R[K]} := \sum_(k <- msupp g) << c * g@_k *g k >>.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path choice finset fintype finfun) mathcomp(tuple bigop ssralg ssrint ssrnum) xfinmap