proposition: Lemma continuous_comp (R S T : topologicalType) (f : R -> S) (g : S -> T) x : {for x, continuous f} -> {for (f x), continuous g} -> {for x, continuous (g \o f)}.
proof: Proof. exact: cvg_comp. Qed.
imports: HB(structures) mathcomp(all_ssreflect all_algebra finmap generic_quotient) mathcomp(boolp classical_sets functions) mathcomp(cardinality mathcomp_extra fsbigop) reals signed