apply (isClosed_𝓗 hU).inter
U : Set ℂ
Q : Set ℂ → Set ℂ
ι : Type u_1
l : Filter ι
hU : IsOpen U
hQ : ∀ K ∈ compacts U, IsCompact (Q K)
⊢ IsClosed ({a | a ∈ 𝓗 U} ∩ {a | ∀ K ∈ compacts U, MapsTo a K (Q K)})
U : Set ℂ
Q : Set ℂ → Set ℂ
ι : Type u_1
l : Filter ι
hU : IsOpen U
hQ : ∀ K ∈ compacts U, IsCompact (Q K)
⊢ IsClosed {a | ∀ K ∈ compacts U, MapsTo a K (Q K)}