BroadcastProofs.sub_add: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/shape/broadcast_proofs.bend as BroadcastProofs
Lines 172-178 of bendtorch-core@0.1.0.0/src/shape/broadcast_proofs.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/shape/broadcast_proofs.bend&start_line=172&end_line=178

import Base

def sub_add(+a: Nat, +b: Nat) -> {a == Nat.sub(Nat.add(a, b), b) : Nat}:
  match b:
    case 0n:
      sub_add_zero(a)
    case 1n+q:
      %add_succ(a, q) : {a == Nat.sub(_, 1n+q) : Nat}
      sub_add(a, q)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/broadcast_proofs.bend&name=add_succ
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/broadcast_proofs.bend&name=sub_add_zero