The plugin is WP Hooks. This is a plugin that lets you add content to the page head, and that’s just what we want!

1. Download and install jsMath on your local server.
2. Download, install, and activate WP Hooks in WordPress.
3. Configure this and add the following to the header (change the path to point to your local installation of jsMath):
   <SCRIPT SRC="jsMath/easy/load.js"></SCRIPT>
4. Start writing math on pages.

This seems to work fine. Here’s an example. \[\int \sin x\ dx= -\cos\ x + C\]

This was created as a display equation via writing \[\int \sin x\ dx= -\cos\ x + C\] in the page.

Update: As pointed out in the comments, you need to install the fonts on the client (browser) side for things to look really nice and for math rendering to be fast; otherwise you get a warning and bitmap fonts.  It’s really easy; the instructions are here.

There’s an excellent program called mimeTeX that renders math without a TeX installation. I used it with Drupal and DruTeX. Now I’m not using Drupal… so I need to find another way to display math.  Oh, mimeTeX still works, but you have to explicitly encode the link.  I’m way too lazy to do that.

Update: I’ve been experimenting with using [ tex ]…[ /tex ] from the mimeTex plugin to WordPress. It’s working now, but I needed to do two things to make it work.

• Create a cache folder under my wp-content folder.
• Modify the plugin to point to my local installation of mimetex.cgi.

I also had to go into the cache folder and delete all the files that were created during the process, so I could see the effect of the changes. But now it works!

Here’s an example of an equation array. Note that you need to use &amp; to insert the required ampersand delimiters.

[ tex ]\begin{eqnarray}
 \overset{*}{\triangleright}\!(uvx) & = & \triangleright\!(\overset{*}{\triangleright}\!(uv)x) \\
 & = & \triangleright\!(\overset{*}{\triangleright}\!(\overset{*}{\triangleright}\!(u)v)x) \\
 & = & \overset{*}{\triangleright}\!(\overset{*}{\triangleright}\!(u)vx)
 \end{eqnarray}[ /tex ]

So… shouldn’t everyone just install LaTeX by default? Shouldn’t all CMS ship with some math solution? Of course!