src/HOL/UNITY/SubstAx.thy
author paulson
Thu Aug 24 12:39:24 2000 +0200 (2000-08-24)
changeset 9685 6d123a7e30bd
parent 8122 b43ad07660b9
child 13796 19f50fa807ae
permissions -rw-r--r--
xsymbols for leads-to and Join
     1 (*  Title:      HOL/UNITY/SubstAx
     2     ID:         $Id$
     3     Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
     4     Copyright   1998  University of Cambridge
     5 
     6 Weak LeadsTo relation (restricted to the set of reachable states)
     7 *)
     8 
     9 SubstAx = WFair + Constrains + 
    10 
    11 constdefs
    12    Ensures :: "['a set, 'a set] => 'a program set"            (infixl 60)
    13     "A Ensures B == {F. F : (reachable F Int A) ensures B}"
    14 
    15    LeadsTo :: "['a set, 'a set] => 'a program set"            (infixl 60)
    16     "A LeadsTo B == {F. F : (reachable F Int A) leadsTo B}"
    17 
    18 syntax (xsymbols)
    19   "op LeadsTo" :: "['a set, 'a set] => 'a program set" (infixl " \\<longmapsto>w " 60)
    20 
    21 end