diff --git a/javascripts/katex.js b/javascripts/katex.js
new file mode 100644
index 000000000..0946ce0a8
--- /dev/null
+++ b/javascripts/katex.js
@@ -0,0 +1,10 @@
+document$.subscribe(({ body }) => {
+  renderMathInElement(body, {
+    delimiters: [
+      { left: "$$", right: "$$", display: true },
+      { left: "$", right: "$", display: false },
+      { left: "\\(", right: "\\)", display: false },
+      { left: "\\[", right: "\\]", display: true },
+    ],
+  });
+});
diff --git a/javascripts/mathjax.js b/javascripts/mathjax.js
new file mode 100644
index 000000000..117b04607
--- /dev/null
+++ b/javascripts/mathjax.js
@@ -0,0 +1,16 @@
+window.MathJax = {
+  tex: {
+    inlineMath: [["\\(", "\\)"]],
+    displayMath: [["\\[", "\\]"]],
+    processEscapes: true,
+    processEnvironments: true,
+  },
+  options: {
+    ignoreHtmlClass: ".*|",
+    processHtmlClass: "arithmatex",
+  },
+};
+
+document$.subscribe(() => {
+  MathJax.typesetPromise();
+});
diff --git a/sitemap.xml.gz b/sitemap.xml.gz
index 789ebfdb5..f64180a61 100644
Binary files a/sitemap.xml.gz and b/sitemap.xml.gz differ