Instances.Ops.sub: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/spec/math/instances.bend as Instances
Lines 51-52 of bend-collections-laws-crypto@1.0.0.0/spec/math/instances.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/instances.bend&start_line=51&end_line=52

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/num.bend as N

def Ops.sub(~T: Data, ~op: N.Op<T> -> T, ~val: T -> Nat, +a: T, +b: T, +h: {Nat.is_le(val(b), val(a)) == True{} : Bool}) -> Type:
  {val(op(N.Sub{a, b})) == Nat.sub(val(a), val(b)) : Nat}

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=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.sub
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/num.bend&name=Op