X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Findexed.h;h=aac4625c8d6f37a4ca06b461222ec3ff3c2ca993;hp=30c29e8e167e3fa788ceead1e9c446b596e232a4;hb=a68aee97d9ebdac8a6ac81f1e41961e6bc792468;hpb=6d7bf9ee5a7ce05cb3a23dae664e781d7325d7b8

diff --git a/ginac/indexed.h b/ginac/indexed.h
index 30c29e8e..aac4625c 100644
--- a/ginac/indexed.h
+++ b/ginac/indexed.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's indexed expressions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -172,7 +172,8 @@ public:
 	exvector get_dummy_indices() const;
 
 	/** Return a vector containing the dummy indices in the contraction with
-	 *  another indexed object. */
+	 *  another indexed object. This is symmetric: a.get_dummy_indices(b)
+	 *  == b.get_dummy_indices(a) */
 	exvector get_dummy_indices(const indexed & other) const;
 
 	/** Check whether the object has an index that forms a dummy index pair