law add_lt_add_iff_left
import bend-mathlib@0.8.1.0/nat.bend as Natimport Base
2744# Adding the same amount on the left does not change the strict order test: a < b tests as k + a < k + b.
2745law add_lt_add_iff_left:
2746 for k: Nat
2747 for -a: Nat
2748 for -b: Nat
2749 {Nat.is_lt(a, b) == Nat.is_lt(Nat.add(k, a), Nat.add(k, b)) : Bool}