proposition: Lemma iter_mulr_1 n x : iter n ( *%R x) 1 = x ^+ n.
proof: Proof. by rewrite iter_mulr mulr1. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq) mathcomp(choice fintype finfun bigop prime binomial)