∀ {L : Type u_1} {X : Type u_2} [inst : TopologicalSpace L] [inst_1 : TopologicalSpace X] [inst_2 : Min L]
  [ContinuousInf L] {f g : X → L} {x : X}, ContinuousAt f x → ContinuousAt g x → ContinuousAt (f ⊓ g) x