proposition: Lemma aut_intr nu : {in int_num, nu =1 id}.
proof: Proof. by move=> _ /intrP[m ->]; apply: rmorph_int. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop order ssralg poly ssrnum ssrint)