proposition: Lemma H5loss_draw_table ht i l : Hiv (i :: l) -> ht_valid ht -> ht_valid (f2 eloss edraw ht i).
proof: Proof. by move/Hiv_hd=> [] [H _ _ _] _ _; apply: H. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(all_algebra)