no goals
τ : Type u_1
inst✝³ : TopologicalSpace τ
inst✝² : AddCommGroup τ
inst✝¹ : TopologicalAddGroup τ
α : Type u_2
inst✝ : TopologicalSpace α
f : Filter τ
ϕ : Flow τ α
s : Set α
hf : ∀ (t : τ), Tendsto (fun x => x + t) f f
t : τ
⊢ ω f ϕ.toFun s = ω f ϕ.toFun (toFun ϕ (-t) '' (toFun ϕ t '' s))
simp [image_image, ← map_add]