∀ {α : Type u_2} {β : Type u_3} {γ : Type u_4} [inst : Lattice α] [inst_1 : Lattice β] [inst_2 : Lattice γ]
  [inst_3 : BoundedOrder α] [inst_4 : BoundedOrder β] [inst_5 : BoundedOrder γ] (f : BoundedLatticeHom β γ)
  (g : BoundedLatticeHom α β),
  { toFun := ⇑f ∘ ⇑g, map_inf' := ⋯ } = { toFun := ⇑f, map_inf' := ⋯ }.comp { toFun := ⇑g, map_inf' := ⋯ }