∀ {τ : Type u_1} [inst : AddMonoid τ] [inst_1 : TopologicalSpace τ] [inst_2 : ContinuousAdd τ] {α : Type u_2}
  [inst_3 : TopologicalSpace α] {β : Type u_3} [inst_4 : TopologicalSpace β] {π : α → β} {ϕ : Flow τ α} {ψ : Flow τ β},
  Flow.IsSemiconjugacy π ϕ ψ → Function.Surjective π