diff -ru /usr/share/ikiwiki/templates/page.tmpl .ikiwiki/templates/page.tmpl
--- /usr/share/ikiwiki/templates/page.tmpl	2010-09-30 08:58:51.000000000 -0400
+++ .ikiwiki/templates/page.tmpl	2010-09-30 09:10:02.000000000 -0400
@@ -1,8 +1,12 @@
 <TMPL_IF HTML5><!DOCTYPE html>
 <html>
-<TMPL_ELSE><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
- "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml">
+<TMPL_ELSE><?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC
+    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
+    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"
+      xmlns:math="http://www.w3.org/1998/Math/MathML"
+      xmlns:svg="http://www.w3.org/2000/svg">
 </TMPL_IF>
 <head>
 <TMPL_IF DYNAMIC>
