∀ {α : Type u} [inst : Std.PRange.UpwardEnumerable α] [Std.PRange.LawfulUpwardEnumerable α]
  [inst_2 : Std.PRange.InfinitelyUpwardEnumerable α] [Std.PRange.LinearlyUpwardEnumerable α] {a b : α},
  Std.PRange.UpwardEnumerable.LE (Std.PRange.succ a) (Std.PRange.succ b) = Std.PRange.UpwardEnumerable.LE a b