Improve wording of symbolic differentiation ops

diff --git a/9.1/paper.tex b/9.1/paper.tex
index 1804e04f7b2711e147659d6f09680742cfec804a..195e46b006561d9e88aa39ff74f4f0c630b294a2 100644 (file)
--- a/9.1/paper.tex
+++ b/9.1/paper.tex
@@ -361,8 +361,10 @@ gives full symbolic tensor algebra support using the pre-existing \texttt{Tensor
 and \texttt{SymmetricTensor} classes and associated functions. We have
 also implemented a set of utility functions with the following features:
 \begin{itemize}
-\item \texttt{differentiate} scalar, tensor, and symmetric tensor expressions
-with respect to other scalar, tensor, or symmetric tensor expressions;
+\item \texttt{differentiate} scalar expressions with respect to other scalar expressions, as well as
+tensors and symmetric tensors of expressions;
+\item \texttt{differentiate} tensors and symmetric tensors of expressions
+with respect to scalar expressions, as well as other tensors and symmetric tensors of expressions;
 \item create symbolic substitution maps;
 \item resolve explicit dependencies between expressions; and
 \item perform scalar and tensor valued substitution (including conversion from symbolic to