proposition: Lemma capfv : left_id fullv capV.
proof: Proof. by move=> U; apply/capv_idPr/subvf. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop finfun tuple) mathcomp(ssralg matrix mxalgebra zmodp)