Apologize in advance if I'm posting in the wrong place, but I have been working with MathJax and have a browser problem to report with the LateX \overline macro. I have a webpage which makes use of this, and it renders fine in firefox, renders but not at the proper height in chrome, and is completely invisible in safari. I searched on overline and no one else seems to have reported this. I also note that this is the case (as described above for each of the browsers) for \sqrt, which presumably invokes \overline.

MathJax appears not to be rendering at all for me now. It works fine for example on MathSciNet, but not on MO. I am using Firefox 9 on Ubuntu. Any thoughts?

Edit: I figured out what the problem was. I was connecting to the internet through a proxy server (the UC Berkeley library proxy, if it matters) and that was making MO not work. It seems that the problem was specific to StackExchange-type sites. I discovered it when I tried to find something on the AskUbuntu StackExchange site - there was a bar at the top saying that the page was trying to load JavaScript from another domain and that the browser was blocking it. Anyway, turning off the proxy worked - now I use the FireFox plugin FoxyProxy which allows you to switch proxies based on url patterns, so I don't have to manually change it all the time.

I don't know where to report this issue. If this is wrong place, please direct me to the right one.

I am using Windows Vista and IE9. I was trying to print http://mathoverflow.net/questions/88368/can-a-group-be-a-universal-turing-machine.

The math symbols like SL_3(Z) disappeared from the Question part.

The math symbols in the first answer look ok. Have trouble with printing the second answer.

Using Print Preview showed the same result. I'd like to know if it's my OS/browser/printer problem, or something I won't be able to fix on my end. Thanks.

"MathJax hasn't been carefully tested in IE9's print preview mode" is probably the reason.

"Have trouble" means the errors are not consistent. The first part the print out of the second answer looked ok. Then I started to see gabbage stuff in the last part of the second answer.

As far as I know, IE9 is the newest IE on Windows. By "better browser" did you mean Firefox?

I am a retiree sharing the computer with my wife. There is no way I can take the computer away from her and install another browser. I might try the printing in the local library. They have Windows XP and IE8.

@scaaahu: I don't have a solution, but perhaps you can indicate if I've reproduced your problem. The computers in the Caltech math department run windows with IE 8. When I try to print to pdf, I get the following error from distiller:

%%[ ProductName: Distiller ]%%
MathJax_Math-Italic not found, using Courier.
MathJax_Main-Regular not found, using Courier.
MathJax_Main-Bold not found, using Courier.
%%[ Error: invalidfont; OffendingCommand: show ]%%

Stack:
()


%%[ Flushing: rest of job (to end-of-file) will be ignored ]%%
%%[ Warning: PostScript error. No PDF file produced. ] %%

Print preview (and printing on an actual printer) both work, with the following horrible result:

Well, within limits. I'm pretty happy, unfortunately for some, to not aspire to IE "compatibility". On the other hand, this looks very likely to actually be some interaction between IE, MathJax (and possibly the way we load fonts for MathJax?), and as such the MathJax folks are likely to be interested. Can you print from any one sites that use MathJax?

The spacing in math rendering looks terrible for me right now. I'm using firefox 3.6.17 on linux. It appears as though negative space is being inserted after every bit of math, so that the math runs over the text which immediately follows (Added: the amount of negative space is roughly proportional to the number of symbols in the math). Just about any question is showing this: http://mathoverflow.net/questions/92061/square-of-a-continuous-map is one where it is obvious.

@Charles: I don't know if you are the only one, but I am not seeing the problem. FWIW I am running Firefox 8 on linux. Is it possible for you to update to a slightly newer version of firefox at all?

Hello, I am unable to make this appear properly:
We consider the set

'$$ S = \lbrace (F,h):F is a decreasing function from R^{+} to R^{+}, h\in R, 0=1- \frac{\theta + 1}{\theta} \frac {\int^{h}_{y=0} F(y) dy}{F(0)} \frac{F(0)-\frac{1}{2}F(h)}{F(0)-F(h)} \rbrace $$'

The function L is defined on S by

'$$ L(F,h) = \frac{ \int^{h}_{x=0} \int^{h}_{y=x} F(y) dy dx} { \int^{h}_{x=0} \int^{h}_{y=0} F(y) dy dx} h $$'

Thanks! Now it is working.

Spice, i am willing to look at it, just post the question number here, any 10K user will be able to see. i can say that I have often had trouble composing on site. My habit is to compose anything long on my home computer in Latex. Once that is right, copy and paste into an MO answer window. Then I make certain changes, for example double backslashes for lines in a matrix must have a third backslash added. Also, it used to attempt to render my stuff as I went along, which was horrible. I'm not sure what I did, but now there is a button at the bottom, something along the lines of One-Time Preview, which attempts to render my code but only when I ask. This is much better.

Spice, the longer visible (though deleted) answer dies out at:

"We will now put an equivalence relation on the set of leaves. Let L1,L2 be two leaves. Then they are equivalent if sup(L1,L2) has the property that $sup(L_1,L_2)"

while your underlying edit window shows

"We will now put an equivalence relation on the set of leaves. Let $L_1, L_2$ be two leaves. Then they are equivalent if $sup(L_1,L_2)$ has the property that $sup(L_1,L_2)<V\leq L_i$ implies that $V=L_i$. This equivalence relation will partician the set of leaves as follows: $ P_1,P_2,\ldots P_k$
Note that the group, $AUT(P_1)\times\ldots AUT(P_k)$ will provide a natural isomorphism between the functor $F_T$ and itself. $if $\sigma\in AUT(P_1)\times\ldots AUT(P_k)$, then $\sigma$ give rise to an endofunctor, $cell^n\rightarrow cell^n$,by permuting the appropriate factors. We will abuse the notation and denote this functor by $\sigma$."

Perhaps moderators can see more, but from my viewpoint there is some kind of problem. To minimize frustration, I suggest you copy your whole edit window contents into a Latex document at home, work on it there until it is all ready. Then open up the edit window for your answer again, delete the stuff there now, paste in the good Latex code, save, preview, finally undelete. As an alternative you can just make a third answer.

I use this method, as a result i have never tried to learn MathJax. Just a handful of quick fixes from Latex to MathJax or whatever. I keep a big file I call MathOverthrow.tex. Each time I want to compose something I put in a \newpage command, then tack on new material until it comes out right. At this point, it is about 89 pages, mostly because I keep interrupting things to start a new page.

Always put a space after "<" (or use "\lt" instead) since "<whatever" might be interpreted as the start of an xml tag.

Problem with \mathfrak
The following input (within proper LaTeX equation delimiters) yields in a blank white space

\textrm{m}\left(\frac12,\ldots,-i\right) = \int\int\int
\lim_{\tilde\mathfrak{t}\rightarrow\emptyset}
\tilde{\cal E}({{\cal K}'}^4,\bar d\!\infty)\ \ dA_W\,.

If I omit the \mathfrak, everything is fine. At other occurences, \mathfrak renders fine.

If an answer on mathoverflow has more than 5 comments, you have to click on "add/show more comments".

When I do that, mathjax rendering is not done, even in the first 5 comments, which revert to their unrendered form.

I'm using IE9 as the browser, if that makes any difference.

@Jim White: it could be an IE9 problem. On IceWeasel / Firefox on Debian, http://mathoverflow.net/questions/51345/moving-one-family-of-commuting-self-adjoint-operators-to-another-without-losing-c works with no problems when uncollapsing comments.

Suddenly from last night, the LaTex code for formulas inside sentence (formula between single dollar signs) do not work.
But formulas between two dollar signs work fine.

@i707107,

we've just upgraded MathJax to 2.2-beta. Briefly, it was setup incorrectly, causing your issue. It should be resolved now (and is for me). If you're still seeing the problem, try the usual tricks for clearing your cache (restart your browser, clear the cache for mathoverflow.net), and if the problem is still there let us know.

@Scott Morrison, after I deleted all cache, I am still seeing the same problem.

Scott: One was http://mathoverflow.net/questions/129036/counterintuitive-consequences-of-the-axiom-of-determinacy/129040#129040 another was http://mathoverflow.net/questions/48526/how-additive-is-lebesgue-measure-in-zfad/48530#48530 In both cases, I replaced the subscript with parentheses, as in $\mathsf{AD}(\mathbb R)$ and $\mathsf{DC}(\mathbb R)$.

LaTeX rendering works for me, but it has become a lot slower than it used to be. I use Firefox 20.0 on a Macbook, OS X 10.8.3. I delete the cache and restarted the browser, to no avail. I see the same issue with Safari.

Rendering is also awfully slow for me. More precisely, after loading the page, it takes about15–20 seconds before anything starts to happen with the MathJax snippets. Then the equations start to render at normal speed.

$x_\mu$ and $y_\mu$ will produce something like $x muandy \mu$ with my mathjax, but the Mathjax used by Math.SE can copy with $x_\mu$ and $y_\mu$ properly. The setting for my mathjax is as following:

<script type="text/x-mathjax-config"> MathJax.Hub.Config({"HTML-CSS": { preferredFont: "TeX", availableFonts: ["STIX","TeX"], linebreaks: { automatic:true }, EqnChunk: (MathJax.Hub.Browser.isMobile ? 10 : 50) }, tex2jax: { inlineMath: [ ["$", "$"], ["\(","\)"] ], processEscapes: true, ignoreClass: "tex2jax_ignore|dno",skipTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'code']}, TeX: { noUndefined: { attributes: { mathcolor: "red", mathbackground: "#FFEEEE", mathsize: "90%" } }, Macros: { href: "{}" } }, messageStyle: "none" }); </script> <script type="text/x-mathjax-config"> MathJax.Hub.Queue(function() { var all = MathJax.Hub.getAllJax(), i; for(i=0; i < all.length; i += 1) { all[i].SourceElement().parentNode.className += ' has-jax'; } });

What should I do in my own setting? Many thanks!