Nat.not_le_lt: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/lib/nat.bend as Nat
Lines 191-200 of bend-collections-laws-crypto@1.0.0.0/proofs/lib/nat.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/nat.bend&start_line=191&end_line=200

import Base
import bend-collections-laws-crypto@1.0.0.0/proofs/lib/logic.bend as L

def not_le_lt(+a: Nat, +b: Nat, e: {Nat.is_le(a, b) == False{} : Bool}) -> {Nat.is_lt(b, a) == True{} : Bool}:
  match a b:
    case 0n 0n:
      Empty.absurd({Nat.is_lt(0n, 0n) == True{} : Bool}, L.true_false(e))
    case 0n 1n+q:
      Empty.absurd({Nat.is_lt(1n+q, 0n) == True{} : Bool}, L.true_false(e))
    case 1n+p 0n:
      {==}
    case 1n+p 1n+q:
      not_le_lt(p, q, e)

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty.absurd
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_le
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/logic.bend&name=true_false