src/HOL/UNITY/SubstAx.thy
author paulson
Thu, 29 Apr 1999 10:51:58 +0200
changeset 6536 281d44905cab
parent 5648 fe887910e32e
child 6575 70d758762c50
permissions -rw-r--r--
made many specification operators infix
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
4776
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     1
(*  Title:      HOL/UNITY/SubstAx
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     2
    ID:         $Id$
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     3
    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     4
    Copyright   1998  University of Cambridge
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     5
6536
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
     6
Weak LeadsTo relation (restricted to the set of reachable states)
4776
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     7
*)
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
     8
5313
1861a564d7e2 Constrains, Stable, Invariant...more of the substitution axiom, but Union
paulson
parents: 5277
diff changeset
     9
SubstAx = WFair + Constrains + 
4776
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
    10
6536
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
    11
consts
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
    12
   LeadsTo :: "['a set, 'a set] => 'a program set"       (infixl 60)
4776
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
    13
6536
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
    14
defs
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
    15
   LeadsTo_def
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
    16
    "A LeadsTo B == {F. F : (reachable F  Int  A) leadsTo
281d44905cab made many specification operators infix
paulson
parents: 5648
diff changeset
    17
	   	            (reachable F  Int  B)}"
4776
1f9362e769c1 New UNITY theory
paulson
parents:
diff changeset
    18
end