proposition: Lemma coprime1p p : coprimep 1 p.
proof: Proof. by rewrite /coprimep -[1%N](size_poly1 R); exact/eqP/eqp_size/gcd1p. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop ssralg poly)