# HG changeset patch
# User wenzelm
# Date 963522565 -7200
# Node ID ab5b24cbaa16bd93d424911305baba3f1791a11d
# Parent  ab706fdb0842c848baab82c188e23b7a0c0fc4d9
replaced infix Plus by <+>;

diff -r ab706fdb0842 -r ab5b24cbaa16 src/HOL/Sum.ML
--- a/src/HOL/Sum.ML	Thu Jul 13 23:09:03 2000 +0200
+++ b/src/HOL/Sum.ML	Thu Jul 13 23:09:25 2000 +0200
@@ -88,18 +88,18 @@
 
 (** Introduction rules for the injections **)
 
-Goalw [sum_def] "a : A ==> Inl(a) : A Plus B";
+Goalw [sum_def] "a : A ==> Inl(a) : A <+> B";
 by (Blast_tac 1);
 qed "InlI";
 
-Goalw [sum_def] "b : B ==> Inr(b) : A Plus B";
+Goalw [sum_def] "b : B ==> Inr(b) : A <+> B";
 by (Blast_tac 1);
 qed "InrI";
 
 (** Elimination rules **)
 
 val major::prems = Goalw [sum_def]
-    "[| u: A Plus B;  \
+    "[| u: A <+> B;  \
 \       !!x. [| x:A;  u=Inl(x) |] ==> P; \
 \       !!y. [| y:B;  u=Inr(y) |] ==> P \
 \    |] ==> P";
diff -r ab706fdb0842 -r ab5b24cbaa16 src/HOL/Sum.thy
--- a/src/HOL/Sum.thy	Thu Jul 13 23:09:03 2000 +0200
+++ b/src/HOL/Sum.thy	Thu Jul 13 23:09:25 2000 +0200
@@ -31,7 +31,7 @@
   Inr            :: "'b => 'a + 'b"
 
   (*disjoint sum for sets; the operator + is overloaded with wrong type!*)
-  Plus          :: "['a set, 'b set] => ('a + 'b) set"        (infixr 65)
+  Plus          :: "['a set, 'b set] => ('a + 'b) set"        (infixr "<+>" 65)
   Part          :: ['a set, 'b => 'a] => 'a set
 
 local
@@ -40,7 +40,7 @@
   Inl_def       "Inl == (%a. Abs_Sum(Inl_Rep(a)))"
   Inr_def       "Inr == (%b. Abs_Sum(Inr_Rep(b)))"
 
-  sum_def       "A Plus B == (Inl``A) Un (Inr``B)"
+  sum_def       "A <+> B == (Inl``A) Un (Inr``B)"
 
   (*for selecting out the components of a mutually recursive definition*)
   Part_def      "Part A h == A Int {x. ? z. x = h(z)}"