diff --git a/_layouts/default.html b/_layouts/default.html
index 33a9e297..87a39eba 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -26,4 +26,16 @@ <h1><a href="{{ "/" | absolute_url }}">{{ site.title }}</a></h1>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/4.1.0/anchor.min.js" integrity="sha256-lZaRhKri35AyJSypXXs4o6OPFTbTmUoltBbDCbdzegg=" crossorigin="anonymous"></script>
     <script>anchors.add();</script>
   </body>
+  
+  <script type="text/javascript" id="MathJax-script" async
+        src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js">
+</script>
+
+<script>
+  MathJax = {
+    tex: {
+      inlineMath: [['$', '$']]
+    }
+  };
+</script>
 </html>