Casting Out Nines

I’ve just made a major discovery: WordPress.com blogs, like this one, allow you to typeset LaTeX directly in your blog posts. For example:

You can put in LaTeX in the comment fields, too. Here’s the FAQ entry that explains it all.  I’m appreciating my switch to WordPress.com more and more each day.

I found this fact out in a comment left by  Terence Tao on the blog of Timothy Gowers, both of whom are not only Fields Medal-winning mathematicians but also WordPress.com bloggers.