Random.Shuffle.permutation: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/spec/math/random.bend as Random
Lines 113-114 of bend-collections-laws-crypto@1.0.0.0/spec/math/random.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/random.bend&start_line=113&end_line=114

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend as W
import bend-collections-laws-crypto@1.0.0.0/src/math/random/rand.bend as R
import bend-collections-laws-crypto@1.0.0.0/spec/math/random/rand.bend as SR

def Shuffle.permutation(~A: Data, ~V: Data, ~rel: A -> V -> Bool, ~S: Data, ~next: S -> W.U64 & S, +s: S, +xs: List<&2, A>, +v: V) -> Type:
  {SR.occurrences(~A, ~V, ~rel, v, R.fst(List<&2, A>, S, R.shuffle(~A, ~S, ~next, s, xs))) == SR.occurrences(~A, ~V, ~rel, v, xs) : Nat}

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/random/rand.bend&name=occurrences
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/random/rand.bend&name=fst
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/random/rand.bend&name=shuffle
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/u64.bend&name=U64