proposition: Lemma derive1nS V (f : R -> V) n : f^`(n.+1) = f^`(n)^`().
proof: Proof. by []. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum matrix interval) mathcomp(mathcomp_extra boolp classical_sets functions) reals signed topology prodnormedzmodule normedtype landau forms