extended the mathjax_config setting to lab

notebook/lab/handlers.py

@@ -17,7 +17,8 @@ class LabHandler(IPythonHandler):
         self.write(self.render_template('lab.html',
             page_title='Jupyter Lab',
             terminals_available=self.settings['terminals_available'],
-            mathjax_url=self.mathjax_url))
+            mathjax_url=self.mathjax_url,
+            mathjax_config=self.mathjax_config))
 
 #-----------------------------------------------------------------------------
 # URL to handler mappings

notebook/templates/lab.html

@@ -79,7 +79,7 @@
     {% endblock %}
 
     {% if mathjax_url %}
-    <script type="text/javascript" src="{{mathjax_url}}?config=TeX-AMS_HTML-full,Safe&amp;delayStartupUntil=configured" charset="utf-8"></script>
+    <script type="text/javascript" src="{{mathjax_url}}?config={{mathjax_config}}&amp;delayStartupUntil=configured" charset="utf-8"></script>
     {% endif %}
 
 </head>