proposition: Lemma exp_coeff_ge0 x n : 0 <= x -> 0 <= exp x n.
proof: Proof. by move=> x0; rewrite /exp divr_ge0 // exprn_ge0. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(set_interval) reals ereal signed topology normedtype landau