src/ZF/Coind/ROOT.ML

proper signature constraint;
minor tuning;

(*  Title:      ZF/Coind/ROOT.ML
    ID:         $Id$
    Author:     Jacob Frost, Cambridge University Computer Laboratory
    Copyright   1995  University of Cambridge

Based upon the article
    Robin Milner and Mads Tofte,
    Co-induction in Relational Semantics,
    Theoretical Computer Science 87 (1991), pages 209-220.

Written up as
    Jacob Frost, A Case Study of Co_induction in Isabelle
    Report, Computer Lab, University of Cambridge (1995).
*)

time_use_thy "ECR";