Problems with LATEX while posting a question

[JD_PM]

Hi

I want to post a question in the High Energy Physics Forum but I do not know why LATEX is not working for me.

I copy-pasted the text to the Advanced Physics Forum Homework Help and there it works.

I also tried with the Relativity and QP Foum and there doesn't work either.

Is there any reason why this happens?

Thank you,

 

[mfb]

The LaTeX interpretation is done independently of the subforum. Can you link to specific posts?

 

[Ibix]

I can confirm that LaTeX rendering doesn't seem to be happening in preview of new threads in at least Relativity, High Energy, and (for me) also Advanced Physics Homework. It seems to work in preview of replies.

In all three forums I clicked Post thread, filled in minimal nonsense for a title (and problem description etc where appropriate) and #[/color]#x^A## as the post text. I clicked Preview and got the raw LaTeX code and tags - it didn't render. The same happened when I tried with itex tags. I didn't try actually posting my nonsense! Rendering seems to work in preview of replies to existing threads. Using Firefox on Android.

 

[JD_PM]

The LaTeX interpretation is done independently of the subforum. Can you link to specific posts?

I did not post it yet because LaTeX rendering was not working when pressing the preview button. I'll try to post it and see if it works.

 

[JD_PM]

It works! :). However, as Ibix said, LaTeX rendering does not work in the preview option

 

[Greg Bernhardt]

Try now, preview is working for me

 

[sysprog]

The $\LaTeX$ help page at https://www.physicsforums.com/help/latexhelp/ isn't rendering the expressions:

 

[Greg Bernhardt]

help page at https://www.physicsforums.com/help/latexhelp/ isn't rendering the expressions:

fixed

 

[sysprog]

Because $\LaTeX$ is being rendered in previews and posts in e.g this thread, I suspect that the latexhelp page non-rendering that I am seeing may be in a server-side cached copy (I purged my browser cache for that page to make sure that it wasn't local to me) that was produced during a temporary MathJax server problem that has now been resolved, so that refreshing the server cache for that page may correct the page.

 

[sysprog]

fixed

Cool. That was quick. Thank you Sir.

 

[Greg Bernhardt]

What's happening is I'm manually selecting which templates load MathJax instead of blanket loading. This is to help with performance on pages where MathJax is not expected.

 

[mfb]

I can confirm that LaTeX rendering doesn't seem to be happening in preview of new threads in at least Relativity, High Energy, and (for me) also Advanced Physics Homework. It seems to work in preview of replies.

In all three forums I clicked Post thread, filled in minimal nonsense for a title (and problem description etc where appropriate) and #[/color]#x^A## as the post text. I clicked Preview and got the raw LaTeX code and tags - it didn't render. The same happened when I tried with itex tags. I didn't try actually posting my nonsense! Rendering seems to work in preview of replies to existing threads. Using Firefox on Android.

I can reproduce that problem, but I also have that in the advanced physics homework section.

 

[Stephen Tashi]

This morning, latex was not rendered when I wrote a post to begin a new thread ( https://www.physicsforums.com/threa...efficients-by-evaluation.990465/#post-6356621 ) and previewed the post. Once the post was posted, the latex was rendered.

 

[George Keeling]

I had a similar problem just now posting this. Latrx did not render in the preview. But when I posted it it (a very short version with apologies) Latex rendered. Then I edited it and put in the full question and preview did work!?* Very confusing. Similar to what happened to Stephen Tashi. Please give us full preview back!

 

[hyksos]

Posting here to test whether MathJax is dead, or down, or whatever else the problem is. $$x = \frac {-b \pm \sqrt{b^2 -4ac}} {2a},$$

$$\begin{array}{l}\left( c-A^{T} \lambda \right) \ \geqslant 0\\-A^{T} \lambda \ \geqslant -c\\A^{T} \lambda \ \leqslant c\end{array}$$

 

[hyksos]

I am trying to start a new thread in Physics >> Quantum Physics and the preview of my post simply refuses to render LaTeX. It is obviously rendering just fine this thread , as you can see above.

Any pointers on how to proceed?

 

[George Keeling]

Test it on this thread.
Post new thread in Quantum Physics with a "****testing****" caution.
If it works, edit out the caution. If it is a mess try and fix it!

 

[mfb]

In posted threads it should always work. If in doubt report it and let a mentor fix it.
Looks like it worked

 

[gerald V]

Yesterday evening and right now I tried to post a thread in the differential geometry forum. The same problem occurred. The delimiters are not enabled in the preview, so the formulas do not appear in the final form. I hesitate to post a thread without the possibility of preview, since some more sophisticated commands (array etc.) are included and there is a high chance that I made some misspellings.

Fixing this bug would be much appreciated, thank you in advance.

 

[Greg Bernhardt]

ah looks like new reply preview works but not new thread, thanks!

 

[Tom.G]

Local or universal rendering problem?
In posts, A ∑ and others from the Symbols button display correctly,
but some instances (in-line LATEX?) have their descenders chopped by the line that follows.

This was several days ago and I didn't note it. Will repost with details if spotted again.

 

[Tom.G]

Found one!
https://www.physicsforums.com/posts/6364709
First line of text has "y" ($y$) with a missing descender.

$r$ is to $\theta$ what $x$ is to $y$ in a cartesian coordinate system. They are independent coordinates. They can be related only if you try to describe a curve, for example the curve of a spiral $r=a\theta$

 

[Ibix]

Found one!
https://www.physicsforums.com/posts/6364709
First line of text has "y" ($y$) with a missing descender.

Looks fine to me, both in your quote and the original. I'm using Firefox on Android.

 

[Greg Bernhardt]

New thread latex preview should be fixed, sorry for the long wait. Be sure to clear your browser caches.