proposition: Lemma norm0_lt : forall a, a != 0 -> norm 0 < norm a.
proof: Proof. exact: IDomain.norm0_lt norm_mul edivP. 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