`$\operatorname{Foo}_{bar}$`
Another alternative, assuming you don't have any markdown syntax in the paragraph, is to enclose the paragraph in P tags, like this:
]]><p>
I really like using $\operatorname{Foo}_{bar}$ as an operator.
</p>
Some lines of math are also jutting out of the margins in Chrome for some reason. (A little, uh, math overflow, if you will.) I'm using Vista.
That's some weird interaction between jsMath and webkit browsers. I can't do anything about that. It doesn't seem to happen with MathJax.
]]>The math preview doesn't seem to be working in Chrome. Is anyone else having this problem?
Yes. I don't know what's going on. The live preview doesn't work in Chrome (on linux), but does work in Firefox. It works in both on another machine running Windows XP. The weird thing is that the one-shot preview works fine, so it's clear that jsMath is working properly. Hmmm ... maybe the modified wmd.js isn't getting loaded for some reason?
Edit: indeed, it looks like the custom version of wmd.js (which incorporates jsMath processing) isn't loading properly. I don't understand why. More Edit: it sometimes works and sometimes doesn't.
]]>If you weren't using jsMath fonts before and don't want to use them, you can always click the jsMath box in the lower right hand corner of your browser, click "options", then click the "use image fonts" radio button. That will save a cookie which tells jsMath to always use image fonts.
]]>
Any ideas? I hadn't wanted to installed the jsmath fonts locally for the sake of keeping my experience in sync with "new users" on mathoverflow. I'm using OS X 10.6.
]]>
which is clearly gibberish!
I don't have iceweasel installed, it's a rebranding of firefox so I don't see why it should be so different, plus you see it on firefox as well.
Looking at your screenshot, the subscript 'p's don't look any smaller than the non-subscript ones. It's a little hard to see, though, so I may be wrong.
]]>

Comparing the two, I think that another difference is in the rendering of the Z and Q themselves.
]]>$E[x]_\sigma$ is equal to $E[x]_\sigma$
$E[x]<em>\sigma$ is equal to $E[x]</em>\sigma$
$E[x]\sigma$ is equal to $E[x]\sigma$
The accepted solution is to put backquotes around your math whenever this problem shows up, like this:
]]>`$E[x]_\sigma$` is equal to `$E[x]_\sigma$`
I'm experiencing the problem right now that the live preview isn't working. Is anybody else getting this? I'm looking into it. (Edit: this problem happens in chrome, but not firefox)
]]>[X,-]:\mathcal C\to\mathcal End(X)-\operatorname{mod}
and
\operatorname{Bl}_{Z}(X)
]]>
$\begin{array}{c}x\\y\end{array}$ will produce "Unknown symbol \y". On a true LaTeX installation, the second backslash will bind to the first, not to the y.
]]>
Selecting image fonts resolves the odd substitutions. They don't scale well, but I can deal with that...
Are you suggesting that the other problems (e.g. commas become semicolons) do occur on the MathJax preview?
No, it's just that there are no visible test cases there.
]]>The last at least does not happen with the MathJax preview page
Are you suggesting that the other problems (e.g. commas become semicolons) do occur on the MathJax preview?
]]>Running in debian [2.6.31-trunk-686 #1 SMP Tue Oct 13 22:34:42 UTC 2009 i686 GNU/Linux] with packages jsmath-fonts and ttf-jsmath installed.
]]>In my browser, writing $0<f'(0)<1$ introduces another interesting bug. Since the < are interpreted as html markup, it messes up the rest of the page. In particular, I can't click the submit button. I have this webinar soon, but I'll post a bug report about this later today (or somebody else can do it).
]]>adding backticks around that latex string fixes the symptoms, but I don't know the cause.
]]>The post you mention (the question, and the answers) don't seem to be using jsMath at all.
It looks pretty silly, but that question (and those two answers) were posted October 17 and 18, and we didn't have any LaTeX support back then ... MO had just launched. Since the question was bumped up to the home page, I'll go edit it now to use dollar signs.
A couple of other people have mentioned jsMath requiring a page refresh to work sometimes, which shouldn't be happening. If we don't solve that problem (it's hard to since I can't reproduce it), hopefully it will go away when we switch to MathJax.
]]>I don't get the rendered math with either Firefox 3.5.7, Chrome 5.0 or Opera 10.10 on Ubuntu 9.10, even after many reloads. The dollars disappear and the content is shown as is.
]]>Also, does this behavior happen on the MathJax preview page (I ask because we'll probably switch from jsMath to MathJax once MathJax is out).
]]>He's also just confirmed that everything looks good with the MathJax preview page.
]]>I've asked him to check if he also has the same problem with MathJax's preview page.
]]>