def ap.pick

bend-osdev-aes@0.1.0.0 · PROOF.bend:44

import Base

44def ap.pick(+n: Nat, +xs: List<&2, U32>, +ys: List<&2, U32>, e: {xs == ys : List<&2, U32>}) -> {ap.nth(xs, n) == ap.nth(ys, n) : U32}:
45  Equal.cong(List<&2, U32>, U32, l => ap.nth(l, n), xs, ys, e)