proposition: Lemma aimg_adjoin_seq (f : ahom aT rT) U xs : (f @: <<U & xs>> = <<f @: U & map f xs>>)%VS.
proof: Proof. by rewrite aimg_agen limgD limg_span. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype div tuple finfun bigop ssralg) mathcomp(finalg zmodp matrix vector poly)