proposition: Lemma mmap_is_linear : scalable_for *%R (mmap idfun h).
proof: Proof. by move=> /= c g; rewrite -mul_malgC rmorphM /= mmapC. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path choice finset fintype finfun) mathcomp(tuple bigop ssralg ssrint ssrnum) xfinmap