def Sub.value
import bend-collections-laws-math@1.0.0.0/spec/math/w64.bend as W64import Base
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as W
import bend-collections-laws-math@1.0.0.0/src/math/w64.bend as X
53def Sub.value(+a: W.U64, +b: W.U64, +h: {Nat.is_le(value(b), value(a)) == True{} : Bool}) -> Type:
54 {value(X.sub(a, b)) == Nat.sub(value(a), value(b)) : Nat}