# Bug Weird LaTex bug

1. Dec 12, 2008

### Math Jeans

I'm getting this weird LaTex bug that is really messing with my posts.

Sometimes when I use the tex tags, I get this weird problem that no matter what I put inside them, the post will always display the a certain equation inside of the tags.

For example:

I am trying to edit my signature (writing my name in greek letters), however, no matter what I put inside the tags (anything at all), the only thing that will come up as a result of my tex tags will be:

$$\rho=\sqrt{4az_0}$$

The problem is on/off (for example I don't seem to be having the problem with this particular post), however, when it ocurrs, it is very irritating.

Does anyone know what is happening?

Here is a screenshot of the problem. It shows the wrong result coming from what I typed in the edit box (the preview in the picture is directly off of what is written in the edit box and no changes were made).

Last edited: Dec 12, 2008
2. Dec 12, 2008

### Gokul43201

Staff Emeritus
You tried all the usual stuff - clearing cache, refreshing window a half dozen times, etc?

3. Dec 12, 2008

### Math Jeans

Yeah. The equation that it keeps displaying is from a while ago too.

4. Dec 12, 2008

### Greg Bernhardt

I don't believe the LaTeX feature is designed for signatures. Partially because the post id is used for part of the images name. Obviously there is no post id when making a signature.

5. Dec 12, 2008

### Math Jeans

But I've had the same problem making regular posts as well.

6. Dec 12, 2008

### Greg Bernhardt

ok I would send chroot a little PM

7. Dec 12, 2008

### fluidistic

I have the same problem. It first appeared when I entered to Greg's blog. I almost got a heart attack when I saw something written in Latex : it was exactly what I wrote in a homework thread!!! I was thinking "what a coincidence!!" but then I realized further on the page other formulas that I wrote and started to understand what was going on : it's like whatever there is written in Latex, it will always appear something you saw before, or maybe something you wrote in Latex before. It happens since more than a week (maybe even 2 or 3 weeks) at least.

8. Dec 13, 2008

### Fredrik

Staff Emeritus
I think you only get the wrong image when you mess up the LaTeX code (and apparently when you try to use LaTeX in signatures). Example:

9. Dec 13, 2008

### fluidistic

You're wrong. It might appear when you enter a wrong Latex code but it's not the cause. I don't think Greg's blog contains only wrong typed Latex code.
Check out the first post on this thread, Math Jeans typed \sigma and what appeared was \sqrt{4az_0}. Both are well typed Latex code.
Hence that's a really strange bug.

10. Dec 13, 2008

### Redbelly98

Staff Emeritus
Math Jeans, if you just need Greek characters you can copy-and-paste from here:
https://www.physicsforums.com/blog.php?b=347
FYI, some characters look much better in boldface Times New Roman font

Mατη Jεανσ vs. Mατη Jεανσ

11. Dec 13, 2008

### Redbelly98

Staff Emeritus
FYI, this problem has been discussed previously: