proposition: Lemma continuous_funcomp {X Y Z : TopologicalSpace} (f : X → Y) (g : Y → Z) : continuous f → continuous g → continuous (funcomp f g).
proof: Proof. intros Hf Hg x. refine (continuous_comp _ _ _ _ _ _). - apply Hf. - apply Hg. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Topology.Filters UniMath.Algebra.Groups UniMath.Algebra.DivisionRig UniMath.Algebra.ConstructiveStructures