proposition: Lemma derive1_cst (k : V) t : (cst k)^`() t = 0.
proof: Proof. by rewrite derive1E derive_val. 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