src/ZF/AC/ROOT.ML

make two copies (!) of Library.UnequalLengths coincide with ListPair.UnequalLengths;

(*  Title:      ZF/AC/ROOT.ML
    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
    Copyright   1995  University of Cambridge

Proofs of AC-equivalences, due to Krzysztof Grabczewski.
*)

use_thys ["WO6_WO1", "WO1_WO7", "AC7_AC9", "WO1_AC", "AC15_WO6",
  "WO2_AC16", "AC16_WO4", "AC17_AC1", "AC18_AC19", "DC"];