# HG changeset patch
# User paulson
# Date 864120782 -7200
# Node ID 6d1768e1d9bc67d4a2f02d241bd2d854c09563ce
# Parent  3772723c5e413551a098fee3b9967949e742152d
Removal of ex/LexProd

diff -r 3772723c5e41 -r 6d1768e1d9bc src/HOL/ex/LexProd.ML
--- a/src/HOL/ex/LexProd.ML	Tue May 20 11:05:59 1997 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,24 +0,0 @@
-(*  Title:      HOL/ex/lex-prod.ML
-    ID:         $Id$
-    Author:     Tobias Nipkow, TU Munich
-    Copyright   1993  TU Munich
-
-For lex-prod.thy.
-The lexicographic product of two wellfounded relations is again wellfounded.
-*)
-
-val prems = goal Prod.thy "!a b. P((a,b)) ==> !p.P(p)";
-by (cut_facts_tac prems 1);
-by (rtac allI 1);
-by (stac surjective_pairing 1);
-by (Fast_tac 1);
-qed "split_all_pair";
-
-val [wfa,wfb] = goalw LexProd.thy [wf_def,LexProd.lex_prod_def]
- "[| wf(ra); wf(rb) |] ==> wf(ra**rb)";
-by (EVERY1 [rtac allI,rtac impI, rtac split_all_pair]);
-by (rtac (wfa RS spec RS mp) 1);
-by (EVERY1 [rtac allI,rtac impI]);
-by (rtac (wfb RS spec RS mp) 1);
-by (fast_tac (!claset addSEs [Pair_inject]) 1);
-qed "wf_lex_prod";
diff -r 3772723c5e41 -r 6d1768e1d9bc src/HOL/ex/LexProd.thy
--- a/src/HOL/ex/LexProd.thy	Tue May 20 11:05:59 1997 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,15 +0,0 @@
-(*  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
-