diff --git a/Notebooks/images/0_1_11.tikz b/Notebooks/images/0_1_11.tikz
new file mode 100644
index 0000000..61ded10
--- /dev/null
+++ b/Notebooks/images/0_1_11.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updna{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\dn{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updna{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/0_1_22.tikz b/Notebooks/images/0_1_22.tikz
new file mode 100644
index 0000000..cad0952
--- /dev/null
+++ b/Notebooks/images/0_1_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/0_2_22.tikz b/Notebooks/images/0_2_22.tikz
new file mode 100644
index 0000000..5987dcc
--- /dev/null
+++ b/Notebooks/images/0_2_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\updnab{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/1_1_11.tikz b/Notebooks/images/1_1_11.tikz
new file mode 100644
index 0000000..d629dce
--- /dev/null
+++ b/Notebooks/images/1_1_11.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updna{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\dn{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\upa{\XX}{1.0}
+\dn{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/1_1_12.tikz b/Notebooks/images/1_1_12.tikz
new file mode 100644
index 0000000..828d7bd
--- /dev/null
+++ b/Notebooks/images/1_1_12.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\dnb{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\upa{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/1_1_21.tikz b/Notebooks/images/1_1_21.tikz
new file mode 100644
index 0000000..4975d88
--- /dev/null
+++ b/Notebooks/images/1_1_21.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\upa{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/1_1_22.tikz b/Notebooks/images/1_1_22.tikz
new file mode 100644
index 0000000..e0beb3d
--- /dev/null
+++ b/Notebooks/images/1_1_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\dnb{\XX}{1.5}
+\emp{\XX}{1.0}
+\upa{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/1_2_22.tikz b/Notebooks/images/1_2_22.tikz
new file mode 100644
index 0000000..196f5b5
--- /dev/null
+++ b/Notebooks/images/1_2_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\updnab{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\upa{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/2_1_12.tikz b/Notebooks/images/2_1_12.tikz
new file mode 100644
index 0000000..509b5d3
--- /dev/null
+++ b/Notebooks/images/2_1_12.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\dnb{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\updnab{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/2_1_21.tikz b/Notebooks/images/2_1_21.tikz
new file mode 100644
index 0000000..6dfb7ae
--- /dev/null
+++ b/Notebooks/images/2_1_21.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\updnab{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/2_1_22.tikz b/Notebooks/images/2_1_22.tikz
new file mode 100644
index 0000000..87936de
--- /dev/null
+++ b/Notebooks/images/2_1_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\dnb{\XX}{1.5}
+\upa{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/2_2_22.tikz b/Notebooks/images/2_2_22.tikz
new file mode 100644
index 0000000..72eb4c4
--- /dev/null
+++ b/Notebooks/images/2_2_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\updnab{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\updnab{\XX}{1.0}
+\emp{\XX}{0.5}
+\updn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/3_1_22.tikz b/Notebooks/images/3_1_22.tikz
new file mode 100644
index 0000000..fd86140
--- /dev/null
+++ b/Notebooks/images/3_1_22.tikz
@@ -0,0 +1,37 @@
+\begin{tikzpicture}
+\input{Electrons.tikz}
+
+% Det |I>
+\renewcommand{\XX}{\XI}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\emp{\XX}{1.0}
+\updnab{\XX}{0.5}
+\updnc{\XX}{0.}
+
+% Det |alpha>
+\renewcommand{\XX}{\XA}
+\cabs{
+\emp{\XX}{2.5}
+\upa{\XX}{2.0}
+}
+\emp{\XX}{1.5}
+\dnb{\XX}{1.0}
+\emp{\XX}{0.5}
+\updnc{\XX}{0.}
+
+% Det |J>
+\renewcommand{\XX}{\XJ}
+\cabs{
+\emp{\XX}{2.5}
+\emp{\XX}{2.0}
+}
+\upa{\XX}{1.5}
+\updncb{\XX}{1.0}
+\emp{\XX}{0.5}
+\dn{\XX}{0.}
+
+\end{tikzpicture}
diff --git a/Notebooks/images/Electrons.tikz b/Notebooks/images/Electrons.tikz
new file mode 100644
index 0000000..dccbecd
--- /dev/null
+++ b/Notebooks/images/Electrons.tikz
@@ -0,0 +1,135 @@
+% Documentation
+% -------------
+%
+% \up      : up   electron (black)
+% \upr     : up   electron (red)
+% \dn      : down electron (black)
+% \dnr     : down electron (red)
+% \updn    : up   electron (black), down electron (black)
+% \updnrr  : up   electron (red  ), down electron (red  )
+% \updnrb  : up   electron (red  ), down electron (black)
+% \updnbr  : up   electron (black), down electron (red  )
+% \emp     : empty orbital
+% \cabs{ } : CABS space inside
+%
+% Example
+% -------
+%
+% \input{Electrons.tikz}
+%
+% \cabs{
+%   \emp{0.}{2.0}
+%   \emp{0.}{1.5}
+% }
+% \emp{0.}{1.0}
+% \updnrb{0.}{0.5}
+% \updn{0.}{0.}
+%
+
+% Electron symbol
+\newcommand{\upel}{$\uparrow$}
+\newcommand{\dnel}{$\downarrow$}
+
+% Colors
+\newcommand{\cabs}[1]{ { \color{lightgray}{#1} } }
+\newcommand{\obs}[1]{  { \color{black}{#1} } }
+\newcommand{\exca}[1]{  { \color{red}{#1} } }
+\newcommand{\excb}[1]{  { \color{Cyan}{#1} } }
+\newcommand{\excc}[1]{  { \color{Green}{#1} } }
+\newcommand{\noexc}[1]{{ \color{black}{#1} } }
+
+% Spacing between the 3 diagrams
+\newcommand{\XI}{-1.}
+\newcommand{\XA}{0.}
+\newcommand{\XJ}{1.}
+
+% Up electron
+\newcommand{\up}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1-0.1,#2) {\noexc{\upel}};
+}
+
+\newcommand{\upa}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1-0.1,#2) {\exca{\upel}};
+}
+
+\newcommand{\upb}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1-0.1,#2) {\excb{\upel}};
+}
+
+\newcommand{\upc}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1-0.1,#2) {\excc{\upel}};
+}
+
+% Down electron
+\newcommand{\dn}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\noexc{\dnel}};
+}
+
+\newcommand{\dna}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\exca{\dnel}};
+}
+
+\newcommand{\dnb}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\excb{\dnel}};
+}
+
+\newcommand{\dnc}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\excc{\dnel}};
+}
+
+% Up and Down electrons
+\newcommand{\updn}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\noexc{\dnel}};
+  \node at (#1-0.1,#2) {\noexc{\upel}};
+}
+
+\newcommand{\updnab}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\excb{\dnel}};
+  \node at (#1-0.1,#2) {\exca{\upel}};
+}
+
+\newcommand{\updncb}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\excb{\dnel}};
+  \node at (#1-0.1,#2) {\excc{\upel}};
+}
+
+\newcommand{\updna}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\noexc{\dnel}}; 
+  \node at (#1-0.1,#2) {\exca{\upel}};
+}
+
+\newcommand{\updnb}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1-0.1,#2) {\noexc{\upel}}; 
+  \node at (#1+0.1,#2) {\excb{\dnel}};
+}
+
+\newcommand{\updnc}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+  \node at (#1+0.1,#2) {\noexc{\dnel}}; 
+  \node at (#1-0.1,#2) {\excc{\upel}};
+}
+
+% Empty orbital
+\newcommand{\emp}[2]{
+  \draw [-,thick] (-0.2+#1,#2) -- (0.2+#1,#2);
+}
+
+% Determinant label
+\node at (\XI,-0.7) {$\ket{I}$};
+\node at (\XA,-0.7) {$\ket{\alpha}$};
+\node at (\XJ,-0.7) {$\ket{J}$};
+
+\newcommand{\XX}{0.}