add math and table in head

_includes/head.html

@@ -4,6 +4,46 @@
 
 <meta content='width=device-width, initial-scale=1.0, user-scalable=no' name='viewport'>
 <meta content='text/html; charset=utf-8' http-equiv='content-type' />
+
+<!-- MathJax Section -->
+<script type="text/javascript"
+src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+</script>
+
+<script type="text/x-mathjax-config">
+  MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]}});
+</script>
+
+<script type="text/x-mathjax-config">
+    MathJax.Hub.Config({
+        TeX: {
+            equationNumbers: {
+                autoNumber: "AMS"
+            }
+        },
+        tex2jax: {
+            inlineMath: [ ['$','$'], ['\(', '\)'] ],
+            displayMath: [ ['$$','$$'] ],
+            processEscapes: true,
+        }
+    });
+</script>
+
+<!-- Table Section -->
+<style>
+  table{
+    border-left:1px solid #000000;border-top:1px solid #000000;
+    width: 100%;
+    word-wrap:break-word; word-break:break-all;
+  }
+  table th{ 
+  text-align:center;
+  }
+  table th,td{
+    border-right:1px solid #000000;border-bottom:1px solid #000000;
+  }
+</style>
+
 {% if page.date %}
   <meta content='{{ site.url }}{{ page.url }}' property='og:url' />
   <meta content="{{ page.content | strip_html | strip_newlines | truncate: 120 }}" property='og:description' />