proposition: Lemma decomp_set0 : decomp set0 = [set set0].
proof: Proof. by rewrite /decomp eqxx. Qed.
imports: mathcomp(all_ssreflect all_algebra finmap) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality fsbigop ) reals ereal signed topology normedtype sequences esum numfun HB(structures)