- the tensor returned by metric_tensor() is symmetric

[ginac.git] / ginac / tensor.h

diff --git a/ginac/tensor.h b/ginac/tensor.h
index b8a65455f7ea6ae9ba71c031914644980d1c8b51..65c86c45bd5c703407980f390683f2a017f57a92 100644 (file)
--- a/ginac/tensor.h
+++ b/ginac/tensor.h
@@ -135,9 +135,9 @@ inline const tensor &ex_to_tensor(const ex &e)
  *  @return newly constructed delta tensor */
 ex delta_tensor(const ex & i1, const ex & i2);
 
-/** Create a metric tensor with specified indices. The indices must be of
- *  class varidx or a subclass. A metric tensor with one covariant and one
- *  contravariant index is equivalent to the delta tensor.
+/** Create a symmetric metric tensor with specified indices. The indices
+ *  must be of class varidx or a subclass. A metric tensor with one
+ *  covariant and one contravariant index is equivalent to the delta tensor.
  *
  *  @param i1 First index
  *  @param i2 Second index