+/** Create an r times c matrix of newly generated symbols consisting of the
+ * given base name plus the numeric row/column position of each element.
+ * The base name for LaTeX output is specified separately. */
+extern ex symbolic_matrix(unsigned r, unsigned c, const std::string & base_name, const std::string & tex_base_name);
+
+/** Create an r times c matrix of newly generated symbols consisting of the
+ * given base name plus the numeric row/column position of each element. */
+inline ex symbolic_matrix(unsigned r, unsigned c, const std::string & base_name)
+{ return symbolic_matrix(r, c, base_name, base_name); }
+