proposition: Lemma H5loss_draw_draw ht i l : Hiv (i :: l) -> ht_valid ht -> f1 i = draw -> edraw <= f2 eloss edraw ht i <= drawwin.
proof: Proof. by move/Hiv_hd=> [] [_ _ H _] _ _; apply: H. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(all_algebra)