def f_add_b
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
18def f_add_b(+a: List<&2, Nat>, b: List<&2, Nat>) -> {F.add_b(a, b) == F.add_u(a, b) : List<&2, Nat>}:
19 match b:
20 case Nil{}:
21 {==}
22 case y <> u:
23 {==}