proposition: Lemma Fadjoin0 K : <<K; 0>>%VS = K.
proof: Proof. by rewrite addv0 subfield_closed. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq div) mathcomp(choice fintype tuple finfun bigop ssralg countalg) mathcomp(finalg zmodp matrix vector falgebra poly polydiv) mathcomp(mxpoly generic_quotient)