def f_mul
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/fprot.bend as Fprotimport Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/secp256k1/field.bend as F
42def f_mul(+a: List<&2, Nat>, +b: List<&2, Nat>) -> {F.mul(a, b) == F.mul_u(a, b) : List<&2, Nat>}:
43 Equal.trans(List<&2, Nat>, F.mul(a, b), F.mul_b(a, b), F.mul_u(a, b), f_mul_a(a, b), f_mul_b(a, b))