proposition: Lemma degMNn n : {morph deg: x / x *- n} .
proof: Proof. exact: raddfMNn. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop order generic_quotient) mathcomp(ssralg ssrnum ssrint)