∀ {α : Type u_6} {β : Type u_7} [inst : Preorder α] [inst_1 : Preorder β] (toFun : α → β) (monotone' : Monotone toFun)
  (toFun_1 : α → β) (monotone'_1 : Monotone toFun_1),
  ({ toFun := toFun, monotone' := monotone' } = { toFun := toFun_1, monotone' := monotone'_1 }) = (toFun = toFun_1)