proposition: Lemma enorm_mul : forall a b, a != 0 -> enorm b <= enorm (a * b).
proof: Proof. exact: norm_mul. Qed.
imports: HB(structures) Coq(ssreflect ssrfun ssrbool Arith.Wf_nat) mathcomp(eqtype ssrnat div seq path) mathcomp(ssralg fintype perm tuple choice generic_quotient) mathcomp(matrix bigop zmodp mxalgebra poly) stronglydiscrete