proposition: Lemma poweR_EFin s r : s%:E `^ r = (s `^ r)%:E.
proof: Proof. by []. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(boolp classical_sets functions) mathcomp(mathcomp_extra) reals ereal signed topology normedtype landau sequences derive realfun itv convex