diff --git a/app/views/wiki/tex.rhtml b/app/views/wiki/tex.rhtml
index 47113df4..2f2e5e52 100644
--- a/app/views/wiki/tex.rhtml
+++ b/app/views/wiki/tex.rhtml
@@ -2,11 +2,17 @@
 
 \usepackage{amsmath}
 \usepackage{amsfonts}
+\usepackage{amssymb}
 \usepackage{graphicx}
 \usepackage{ucs}
 \usepackage[utf8x]{inputenc}
 \usepackage{hyperref}
 
+%----Macros----------
+\newcommand{\gt}{>}
+\newcommand{\lt}{<}
+\newcommand{\qed}{\blacksquare}
+
 %-------------------------------------------------------------------
 
 \begin{document}