ex/LexProd.thy
author lcp
Thu, 21 Jul 1994 10:52:00 +0200
changeset 97 3f4976d8c97f
parent 0 7949f97df77a
child 249 492493334e0f
permissions -rw-r--r--
HOL/Makefile: now test depends upon SUBST_FILES HOL/Makefile/SUBST_FILES: changed some filenames to upper case HOL/Makefile: now executes ex/ROOT.ML after Subst/ROOT.ML

(*  Title: 	HOL/ex/lex-prod.thy
    ID:         $Id$
    Author: 	Tobias Nipkow, TU Munich
    Copyright   1993  TU Munich

The lexicographic product of two relations.
*)

LexProd = WF + Prod +
consts "**" :: "[('a*'a)set, ('b*'b)set] => (('a*'b)*('a*'b))set" (infixl 70)
rules
lex_prod_def "ra**rb == {p. ? a a' b b'. \
\	p = <<a,b>,<a',b'>> & (<a,a'> : ra | a=a' & <b,b'> : rb)}"
end