proposition: Lemma Cpow_mult_r c n m : c^(n*m) = (c^n)^m.
proof: Proof. induction n; simpl. now rewrite Cpow_1_l. now rewrite !Cpow_add_r IHn Cpow_mult_l. Qed.
imports: Coq(Reals ssreflect) Rcomplements Rbar Continuity Derive Hierarchy