src/HOL/Reconstruction.thy
changeset 17508 c84af7f39a6b
parent 17488 67376a311a2b
child 17603 f601609d3300
--- a/src/HOL/Reconstruction.thy	Tue Sep 20 13:58:58 2005 +0200
+++ b/src/HOL/Reconstruction.thy	Tue Sep 20 14:03:37 2005 +0200
@@ -7,7 +7,7 @@
 header{* Reconstructing external resolution proofs *}
 
 theory Reconstruction
-imports Hilbert_Choice Map Infinite_Set Commutative_Ring Extraction
+imports Hilbert_Choice Map Infinite_Set Extraction
 uses "Tools/res_lib.ML"
 
   "Tools/res_clause.ML"