proposition: Lemma memv_span1 v : v \in <<[:: v]>>%VS.
proof: Proof. by rewrite memv_span ?mem_head. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop finfun tuple) mathcomp(ssralg matrix mxalgebra zmodp)