Please report bugs or feature requests here.

(\textit likewise does not work right.)

If you come across these posts while browsing, please do fix them so that you and others can read them. Here's a bash one-liner that should do a pretty good job. Click "edit" on the post and copy-paste the source into a file post.txt. Then run

cat post.txt | sed -e 's|(http://latex.mathoverflow.net/png[^)]*)|×|g' -e 's/\\sb /_/g' | sed -e 's/!\[\([^×]*\)\]×/$\1$/g'

and paste the output into the MO input box. This command changes something like ![V\sb {ij}](http://latex.mathoverflow.net/png?V%5F%7Bij%7D) into ![V_{ij}]×, and then into $V_{ij}$. The funny symbol × is inserted to clearly delimit the LaTeX source. It's still a good idea to make sure the correction is sane. For example, you may have to add some backquotes (these ones: `) around the dollar signs if there are lots of underscores making things italic.

Anyway, I realized that the thing causing the problem was that I had installed an old version of the "mathjax fonts" from the mathjax package, the public beta version of the STIX fonts, and the jsMath fonts. I deleted all of them and installed the 1.0 version of the Stix fonts, and now everything looks the way it should.

Just posting this in case anybody else had similar problems.

Thanks.

To cut a long story short, the math support on MathOverflow (even on faketestsite) is much better than the support on CSTheory.

Specifically, when asking or answering a question, MO renders the formulas on the fly, while in CSTheory it takes quite some time before the formulas are processed.

I wanted to know how to tweak MathJax on CSTheory to behave like MO?

I've implemented MathJax on faketestsite and I invite you to go try it out.

• It's configured to try to convert to MathML, but to use HTML-CSS if the browser doesn't support MathML (what browsers aside from Firefox support MML?).
• All macros that work on MO should work on faketestsite.
• The live preview should work.
• Math in the comments should work properly.

One issue I've encountered is that when I use Firefox and get MathML output, it looks like I don't have enough fonts installed. For example, \mathfrak and \mathcal both come out as upright roman font. Does anybody know how to solve this?

It's likely to feel a bit slow right now. There are two reasons for this. One is that I'm hosting MathJax on my home computer, so fetching the scripts and fonts may be slow. The other is that MathJax is still being optimized for speed. Both of these will be resolved by the time we start using MathJax on MO.

Please try to avoid using LaTeX in the titles, since it does not render on the front page, and this makes it harder to read. If you do put LaTeX in the title, someone may edit it out to improve readability, so please don't be surprised if this happens.

Is there any opposition to something like this, or even the entire practice of editing LaTeX out of titles?

You'll see a sidebar on the right, which allows you to type LaTeX and provides a real-time preview. When you're done, you can copy and paste the code over to your post. The code it produces is MarkDown syntax for an image tag. It generates alt-text containing the original LaTeX, so you can edit and see other people's source if you need to.

We've modified the original SELaTeX code in order to use our own LaTeX renderer, rather than the one over at codecogs.com. It's possible we'll have issues with this, so please report any problems.

We are well aware of the insufficiencies of this solution. In particular, it would be lovely to provide MathML to browsers that can handle it, but for now that's beyond us. It would be great to be able to write LaTeX inline in your post, rather than having to jump to the sidebar, but that will have to wait on support from FogCreek, the makers of the StackExchange software. Anyway -- perfect is the enemy of good, so for now we're going with this.