PROOF.view_length.go: def of lawful-arrays@0.1.0.0
Import: import lawful-arrays@0.1.0.0/PROOF.bend as PROOF
Lines 32-36 of lawful-arrays@0.1.0.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=lawful-arrays@0.1.0.0/PROOF.bend&start_line=32&end_line=36

import Base
import lawful-arrays@0.1.0.0/defs.bend as D
import lawful-arrays@0.1.0.0/proof_tree.bend as P

def view_length.go(-T: Data, -a: Array<T>, +d: Nat, hf: {D.full(T, a, d) == True{} : Bool},
  m: P.Mirror(T, a)) -> {List.length(&2, T, D.view(T, a)) == Nat.pow(2n, d) : Nat}:
  (t, +e) = m
  %e : {List.length(&2, T, D.view(T, _)) == Nat.pow(2n, d) : Nat}
  P.view_length(T, d, t, full_t(T, a, t, d, e, hf))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.length
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.pow
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/PROOF.bend&name=full_t
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/defs.bend&name=full
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/defs.bend&name=view
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/proof_tree.bend&name=Mirror
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/proof_tree.bend&name=view_length