247         reference at_element (size_type i, size_type j) {  in at_element()  function in boost::numeric::ublas::matrix
258             return at_element (i, j);  in operator ()()
295             return (at_element (i, j) = t);  in insert_element()
306             at_element (i, j) = value_type/*zero*/();  in erase_element()
1358         reference at_element (size_type i, size_type j) {  in at_element()  function in boost::numeric::ublas::fixed_matrix
1369             return at_element (i, j);  in operator ()()
1382             return (at_element (i, j) = t);  in insert_element()
1393             at_element (i, j) = value_type/*zero*/();  in erase_element()
2472         reference at_element (size_type i, size_type j) {  in at_element()  function in boost::numeric::ublas::vector_of_vector
2477             return at_element (i, j);   in operator ()()
2483             return (at_element (i, j) = t);   in insert_element()
2487             at_element (i, j) = value_type/*zero*/();   in erase_element()
5092         reference at_element (size_type i, size_type j) {  in at_element()  function in boost::numeric::ublas::c_matrix
5099             return at_element (i, j);  in operator ()()
5105             return (at_element (i, j) = t);  in insert_element()