1 files changed, 11 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index 4423c5310a..f400391b67 100644
--- a/NEWS
+++ b/NEWS
@@ -157,6 +157,17 @@ with all sufficient information, see the ChangeLog file.
     * IO.console
 
 * matrix
+  * new methods:
+    * Matrix#diagonal?
+    * Matrix#hermitian?
+    * Matrix#lower_triangular?
+    * Matrix#normal?
+    * Matrix#orthogonal?
+    * Matrix#permutation?
+    * Matrix#symmetric?
+    * Matrix#unitary?
+    * Matrix#upper_triangular?
+    * Matrix#zero?
   * extended methods:
     * Matrix#each and #each_with_index can iterate on a subset of the elements
     * Matrix#find_index returns [row, column] and can iterate on a subset