src/ZF/ListFn.thy
changeset 124 858ab9a9b047
parent 43 eb7ad4a7dc4f
--- a/src/ZF/ListFn.thy	Tue Nov 16 14:23:19 1993 +0100
+++ b/src/ZF/ListFn.thy	Tue Nov 16 14:24:21 1993 +0100
@@ -10,7 +10,7 @@
 although complicating its derivation.
 *)
 
-ListFn = List +
+ListFn = List + "constructor" +
 consts
   "@"	     :: "[i,i]=>i"      			(infixr 60)
   list_rec   :: "[i, i, [i,i,i]=>i] => i"