Xor.fits0: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/proofs/math/random/pcg/xor.bend as Xor
Lines 71-76 of bend-collections-laws-math@1.0.0.0/proofs/math/random/pcg/xor.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/proofs/math/random/pcg/xor.bend&start_line=71&end_line=76

import Base
import bend-collections-laws-math@1.0.0.0/spec/lib/common.bend as C
import bend-collections-laws-math@1.0.0.0/proofs/lib/logic.bend as L

def fits0(+a: Nat, +h: {C.fits(0n, a) == True{} : Bool}) -> {a == 0n : Nat}:
  match a:
    case 0n:
      {==}
    case 1n+q:
      Empty.absurd({1n+q == 0n : Nat}, L.false_true(h))

Uses (5):
  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=bend-collections-laws-math@1.0.0.0/proofs/lib/logic.bend&name=false_true
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/spec/lib/common.bend&name=fits