the tensor returned by metric_tensor() is symmetric

diff --git a/doc/tutorial/ginac.texi b/doc/tutorial/ginac.texi
index 7ee78cb9791d5764a137ac825d8615b9e467fc29..fe09793d0f8b91e24b5f867d004be03c8870dc98 100644 (file)
--- a/doc/tutorial/ginac.texi
+++ b/doc/tutorial/ginac.texi
@@ -1640,9 +1640,9 @@ representation @code{diag(1,1,1,...)}. It is constructed by the function
 @cindex @code{metric_tensor()}
 @subsubsection General metric tensor
 
-The function @code{metric_tensor()} creates a general metric tensor with
-two indices that can be used to raise/lower tensor indices. The metric
-tensor is denoted as @samp{g} in the output and if its indices are of
+The function @code{metric_tensor()} creates a general symmetric metric
+tensor with two indices that can be used to raise/lower tensor indices. The
+metric tensor is denoted as @samp{g} in the output and if its indices are of
 mixed variance it is automatically replaced by a delta tensor:
 
 @example