diff --git a/diagram_groups.tex b/diagram_groups.tex
new file mode 100644
index 0000000000000000000000000000000000000000..ade433f750861e67977d84b812cff45515093572
--- /dev/null
+++ b/diagram_groups.tex
@@ -0,0 +1,50 @@
+\documentclass{standalone}
+\usepackage[T1]{fontenc}
+\usepackage{amsmath}
+\usepackage{amsfonts}
+\usepackage{parskip}
+\usepackage{marvosym} %Lightning symbol
+\usepackage[usenames,dvipsnames]{color}
+\usepackage[hidelinks]{hyperref}
+\renewcommand*{\familydefault}{\sfdefault}
+
+\usepackage{bbm} %For \mathbbm{1}
+%\usepackage{bbold}
+\usepackage{tikz}
+
+\begin{document}
+
+\begin{tikzpicture}[scale=0.8]
+    \def\r{4};
+
+    % Line and circles
+    \foreach \a in {0,...,23} {
+        \draw[-] ({\a*15}:\r) -- ({(\a+1)*15}:\r);
+        \draw ({\a*15}:\r) circle (0.05);
+    }
+
+    % Red dots
+    \foreach \a in {-3,0,2,3,4,5,6} {
+        \draw[fill,red] ({\a*15}:\r) circle (0.07);
+    }
+    % Red label
+    \draw [fill,red] ({1*15}:\r/2) circle (0.07);
+    \draw ({1*15}:\r/2) +(0,-0.3) node {zeroes of $b_2$};
+
+    % Blue squares
+    \foreach \a in {9,10,11,14,16,17} {
+        \draw[fill,blue] ({\a*15}:\r) +(-0.15,-0.1) -- +(0.15,-0.1) -- +(0,0.15);
+    }
+    % Blue label
+    \draw[fill,blue] ({11*15}:\r/2) +(-0.15,-0.1) -- +(0.15,-0.1) -- +(0,0.15);
+    \draw ({11*15}:\r/2) +(0,-0.3) node {zeroes of $b_1$};
+
+    % Arrows
+    \draw[->] ({7*15}:\r-1) -- ({7*15}:\r-0.2);
+    \draw[->] ({20*15}:\r-1) -- ({20*15}:\r-0.2);
+    % Labels j1 j2
+    \draw ({7*15}:\r-1) +(0,-0.2) node {$j_1$};
+    \draw ({20*15}:\r-1) +(0,+0.2) node {$j_2$};
+
+\end{tikzpicture}
+\end{document}