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-rw-r--r--lib/matrix.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb
index dbae755204..7140f31754 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -70,6 +70,7 @@ end
# * <tt> #minor(*param) </tt>
#
# Properties of a matrix:
+# * <tt> #empty? </tt>
# * <tt> #real? </tt>
# * <tt> #regular? </tt>
# * <tt> #singular? </tt>