U64.threshold: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/math/u64/u64.bend as U64
Lines 88-89 of bend-collections-laws-crypto@1.0.0.0/proofs/math/u64/u64.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/math/u64/u64.bend&start_line=88&end_line=89

import Base
import bend-collections-laws-crypto@1.0.0.0/proofs/lib/lemmas/src/wide.bend as W
import bend-collections-laws-crypto@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend as S

def threshold() -> {S.sign_threshold(63n) == W.join(32n, 32n, Word.zero(32n), S.sign_threshold(31n)) : Word(64n)}:
  {==}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.zero
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend&name=sign_threshold
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/lib/lemmas/src/wide.bend&name=join