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src/FOLP/ex/If.thy
changeset 0 a5a9c433f639
child 17480 fd19f77dcf60 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/FOLP/ex/If.thy	Thu Sep 16 12:20:38 1993 +0200
@@ -0,0 +1,5 @@
+If = FOLP +
+consts  if     :: "[o,o,o]=>o"
+rules
+        if_def "if(P,Q,R) == P&Q | ~P&R"
+end
isabelle