src/ZF/Trancl.thy
author clasohm
Sat Dec 09 13:36:11 1995 +0100 (1995-12-09 ago)
changeset 1401 0c439768f45c
parent 753 ec86863e87c8
child 1478 2b8c2a7547ab
permissions -rw-r--r--
removed quotes from consts and syntax sections
     1 (*  Title: 	ZF/trancl.thy
     2     ID:         $Id$
     3     Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
     4     Copyright   1992  University of Cambridge
     5 
     6 Transitive closure of a relation
     7 *)
     8 
     9 Trancl = Fixedpt + Perm + "mono" + Rel + 
    10 consts
    11     rtrancl :: i=>i  ("(_^*)" [100] 100)  (*refl/transitive closure*)
    12     trancl  :: i=>i  ("(_^+)" [100] 100)  (*transitive closure*)
    13 
    14 defs
    15     rtrancl_def	"r^* == lfp(field(r)*field(r), %s. id(field(r)) Un (r O s))"
    16     trancl_def  "r^+ == r O r^*"
    17 end