src/HOL/UNITY/Follows.thy
author paulson
Mon May 24 15:47:06 1999 +0200 (1999-05-24)
changeset 6706 d8067e272d4f
child 6809 5b8912f7bb69
permissions -rw-r--r--
Theory of the "Follows" relation
     1 (*  Title:      HOL/UNITY/Follows
     2     ID:         $Id$
     3     Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
     4     Copyright   1998  University of Cambridge
     5 
     6 The Follows relation of Charpentier and Sivilotte
     7 *)
     8 
     9 Follows = Union +
    10 
    11 constdefs
    12 
    13   Follows :: "['a => 'b::{order}, 'a => 'b::{order}] => 'a program set"
    14                  (infixl 65)
    15    "f Follows g == Increasing g Int Increasing f Int
    16                    Always {s. f s <= g s} Int
    17                    (INT k. {s. k <= g s} LeadsTo {s. k <= f s})"
    18 
    19 
    20 end