lean2/src/builtin/nat.lean

34 lines
698 B
Text
Raw Normal View History

Import kernel.
Variable Nat : Type.
Alias : Nat.
Builtin Nat::numeral.
Builtin Nat::add : Nat → Nat → Nat.
Infixl 65 + : Nat::add.
Builtin Nat::mul : Nat → Nat → Nat.
Infixl 70 * : Nat::mul.
Builtin Nat::le : Nat → Nat → Bool.
Infix 50 <= : Nat::le.
Infix 50 ≤ : Nat::le.
Definition Nat::ge (a b : Nat) := b ≤ a.
Infix 50 >= : Nat::ge.
Infix 50 ≥ : Nat::ge.
Definition Nat::lt (a b : Nat) := ¬ (a ≥ b).
Infix 50 < : Nat::lt.
Definition Nat::gt (a b : Nat) := ¬ (a ≤ b).
Infix 50 > : Nat::gt.
Definition Nat::id (a : Nat) := a.
Notation 55 | _ | : Nat::id.
SetOpaque Nat::ge true.
SetOpaque Nat::lt true.
SetOpaque Nat::gt true.
SetOpaque Nat::id true.