src/HOL/cladata.ML
changeset 4223 f60e3d2c81d3
parent 4206 688050e83d89
child 4240 8ba60a4cd380
--- a/src/HOL/cladata.ML	Wed Nov 12 16:28:53 1997 +0100
+++ b/src/HOL/cladata.ML	Wed Nov 12 18:58:50 1997 +0100
@@ -21,6 +21,8 @@
   val rev_mp = rev_mp
   val subst = subst
   val sym = sym
+  val thin_refl = prove_goal HOL.thy 
+		  "!!X. [|x=x; PROP W|] ==> PROP W" (K [atac 1]);
   end;
 
 structure Hypsubst = HypsubstFun(Hypsubst_Data);