def lt_nat
import bend-collections-laws-math@1.0.0.0/proofs/math/typed/fix32.bend as Fix32import Base
import bend-collections-laws-math@1.0.0.0/spec/math/generic.bend as SG
import bend-collections-laws-math@1.0.0.0/proofs/lib/u32.bend as U3
72def lt_nat(+a: U32, +b: U32) -> {U32.is_lt(a, b) == Nat.is_lt(SG.u32_val(a), SG.u32_val(b)) : Bool}:
73 U3.is_lt_nat(a, b)