def mlt
import bend-collections-laws-math@1.0.0.0/proofs/math/typed/u64mont.bend as U64montimport Base
import bend-collections-laws-math@1.0.0.0/proofs/math/natural/arith.bend as NR
209def mlt(+bp: Nat, +x: Nat) -> {Nat.is_lt(Nat.mod(x, 1n+bp), 1n+bp) == True{} : Bool}:
210 NR.dm_lt(bp, x)