Proof.sum_value: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/math/natural/proof.bend as Proof
Lines 77-78 of bend-collections-laws-crypto@1.0.0.0/proofs/math/natural/proof.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/math/natural/proof.bend&start_line=77&end_line=78

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/math/natural.bend as S
import bend-collections-laws-crypto@1.0.0.0/proofs/math/natural/lists.bend as LS

def sum_value(+xs: List<&2, Nat>) -> S.Sum.value(xs):
  LS.sum_ok(xs)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/math/natural/lists.bend&name=sum_ok
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/natural.bend&name=Sum.value