proposition: Lemma scalable_linear (R : ringType) (U : lmodType R) V (s : Scale.law R V) (f : U -> V) : linear_for s f -> scalable_for s f.
proof: Proof. by move=> Lsf a v; rewrite -[a *:v](addrK v) (additive_linear Lsf) Lsf addrK. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq) mathcomp(choice fintype finfun bigop prime binomial)