diff --git a/doc/BookChapters/linalg.do.txt b/doc/BookChapters/linalg.do.txt
index 74177bd89..40de30a69 100644
--- a/doc/BookChapters/linalg.do.txt
+++ b/doc/BookChapters/linalg.do.txt
@@ -108,9 +108,16 @@ Some Equivalent Statements. For an $N\times N$ matrix  $\mathbf{A}$ the followin
   * $0$ is not eigenvalue of $\mathbf{A}$.
 
 
+===== Important algorithms =====
+
+
 ===== Derivatives of vectors and matrices =====
 
 
+
+
+
+
 ===== Numpy and arrays =====
 "Numpy":"http://www.numpy.org/" provides an easy way to handle arrays in Python. The standard way to import this library is as
 !bc pycod