proposition: Lemma monalgU0 k : << (0 : G) *g k >> = 0 .
proof: Proof. exact: raddf0. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path choice finset fintype finfun) mathcomp(tuple bigop ssralg ssrint ssrnum) xfinmap