Introducing LaTeX Math Typesetting

[robphy]

Are you setting a transparency flag?
Or are you trying to explicitly match the current skin background (for Prime, apparently, RGB: 233,233,233), which is different from the quote background (for Prime, apparently, RGB 216,233,228)?

 

[chroot]

I'm calling pnmtopng with -transparency =rgb:ff/ff/ff, which should turn all the white pixels transparent (and the latex itself forces an #black background). It works if I don't use antialiasing when calling ghostscript, but, for some reason, turning antialiasing on screws pnmtopng up. It didn't do this in previous versions, so it's likely a bug in the newest versions. (We're on a brand new server now). I'm working on finding a workaround.

- Warren

 

[chroot]

$$0 < k \leq m < n,\ \ \gcd\left({{n}\choose{k}},{{n}\choose{m}}\right) > 1$$

$${{n}\choose{k}}{{n-k}\choose{m-k}} = {{n}\choose{m}}{{m}\choose{k}}$$

$${{n}\choose{k}} \left| {{n}\choose{m}}{{m}\choose{k}}$$

$$\gcd\left({{n}\choose{k}},{{n}\choose{m}}\right) = 1$$

$${{n}\choose{k}} \left| {{m}\choose{k}}$$

$${{n}\choose{k}} > {{m}\choose{k}}$$

$$\gcd\left({{n}\choose{k}},{{n}\choose{m}}\right) > 1$$

Another test...

- Warren

 

[chroot]

Another test of aliasing... 8

$$e^x = \sum_{n=0}^\infty \frac{x^n}{n!} = \lim_{n\rightarrow\infty} (1+x/n)^n$$

- Warren

 

[chroot]

Transparency's fixed (found a workaround) but the antialiasing routine used by ghostscript is different now, and, in my opinion, not as nice looking. I'm going to have to keep playing with that.

- Warren

 

[robphy]

Looks better. Thanks.

http://www.theiling.de/projects/transparency.html useful?
(By the way, when this gets fixed, can the http://tug.org/PSTricks/" package be included?)

 

[dav2008]

Transparency's fixed (found a workaround) but the antialiasing routine used by ghostscript is different now, and, in my opinion, not as nice looking. I'm going to have to keep playing with that.

- Warren

Why doesn't the old tex work?

 

[chroot]

We're on a new server with an entirely different Linux distribution. Apparently, people have made a lot of (annoying) changes to some of the basic image-manipulation programs in the last year or so, and I'm having to figure out how to get around them. Apparently the transparency is still not working in IE.

- Warren

 

[robphy]

I wonder if that IE problem has anything to do with
http://entropymine.com/jason/testbed/pngtrans/ (try viewing in IE and FF)
By the way, the images "copied" off the webpage (via right-click) differ between doing that in IE and in FF.

The new images have fonts that seem a little thinner (compared to the earlier version)... as if more pixels were selected for transparency than before.

 

[chroot]

robphy,

As I mentioned, the antialiasing done by ghostscript appears to be different now than it used to be. As I said, I prefer the old look, and am going to try to make it look a little better soon. Apparently quite a bit of stuff was changed.

- Warren

 

[chroot]

I wonder if that IE problem has anything to do with
http://entropymine.com/jason/testbed/pngtrans/ (try viewing in IE and FF)

Yeah, that's a good page. IE certainly does have lots of problems with PNG transparency, but my images here used to work just fine under both browsers. This is going to drive me insane.

- Warren

 

[chroot]

Another test of aliasing... 9

$$e^x = \sum_{n=0}^\infty \frac{x^n}{n!} = \lim_{n\rightarrow\infty} (1+x/n)^n$$

- Warren

$$e^x = \sum_{n=0}^\infty \frac{x^n}{n!} = \lim_{n\rightarrow\infty} (1+x/n)^n$$- Warren

 

[bomba923]

$$\mathop {\lim }\limits_{n \to \infty } \bigcup\limits_{i = 0}^{n!} {\left\{ {\frac{i}{{n!}}} \right\}} = \mathbb{Q} \cap \left[ {0,1} \right]$$

 

[Kazza_765]

Testing...

$$E_n = /frac{n^2/pi^2}{(L+2/delta)^2}$$

Hmm, does anyone know why I can view Latex graphics in other peoples posts, but I can never view them in my own. I always get the please wait the graphic is being generated message.

 

[robphy]

$$E_n = \frac{n^2\pi^2}{(L+2\delta)^2}.$$

Your slashes are backwards.
And I believe the tags have to be lowercase.

Testing...

$$E_n = /frac{n^2/pi^2}{(L+2/delta)^2}$$

Hmm, does anyone know why I can view Latex graphics in other peoples posts, but I can never view them in my own. I always get
the please wait the graphic is being generated message.

 

[rbj]

lemme try:

$$E_n = \frac{n^2 \pi^2}{(L + 2 \delta)^2}$$

 

[robphy]

$$E_n = \frac{n^2 \pi^2}{(L + 2 \delta)^2}$$
Yes, a slight improvement. (The gamma modification?)

 

[Doc Al]

$$E_n = \frac{n^2 \pi^2}{(L + 2 \delta)^2}$$

Testing $$\vec{F} = m \vec{a}$$

Yikes... worse than ever.

 

[robphy]

Testing $$\vec{F} = m \vec{a}$$

Yikes... worse than ever.

Using IE?
Transparency seems okay in Firefox (1.0.7).

 

[Hootenanny]

$$\fbox{\LaTeX}$$

 

[Doc Al]

Testing $$\vec{F} = m \vec{a}$$

Yikes... worse than ever.

Seems to be working now; it wasn't yesterday when I posted that.

Yes, I'm using IE.

 

[Hootenanny]

Somethings wrong with the AA again

$$V = \int \pi \left[ f(x) \right]^2$$

I'm using firefox.

 

[-Job-]

I've had trouble with .png transparency in IE before. The only way i got around that was by using transparent .gifs. I know http://www.forkosh.dreamhost.com/source_mimetex.html#introduction converts to .gif, but it's not my favorite converter as it doesn't use very smooth (vector?) characters but it takes in Latex at the command line directly, rather than reading from a file which i found very useful. An alternative would be to set the background color to the background color of these forums, but since you have different styles for the PF layout that might not work. Sounds like a pain.

Actually, i just found out http://www.forkosh.dreamhost.com/source_mimetex.html#introduction can be compiled with anti-aliasing on.

 

[robphy]

robphy,

As I mentioned, the antialiasing done by ghostscript appears to be different now than it used to be. As I said, I prefer the old look, and am going to try to make it look a little better soon. Apparently quite a bit of stuff was changed.

- Warren

What version of Ghostscript? What version and distro of linux?
From googling, these commandline options might worth playing with:

-dTextAlphaBits=4 -dGraphicsAlphaBits=4 -dNOPLATFONTS

...just a thought.

 

[pervect]

$$\[ \unitlength 1mm \begin{picture}(85.00,95.00)(0,0) \linethickness{0.15mm} \put(20.00,0.00){\line(0,1){90.00}}\linethickness{0.15mm} \put(20.00,90.00){\line(0,1){0.12}} \linethickness{0.15mm} \put(20.00,90.12){\line(0,1){0.12}} \put(20.00,90.24){\vector(0,1){0.12}} \linethickness{0.15mm} \multiput(65.12,90.24)(0.12,0.24){1}{\line(0,1){0.24}} \put(65.24,90.48){\vector(1,2){0.12}} \linethickness{0.15mm} \multiput(40.12,40.12)(0.12,0.12){1}{\line(1,0){0.12}} \put(40.24,40.24){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(60.12,80.12)(0.12,0.12){1}{\line(0,1){0.12}} \put(60.24,80.24){\vector(1,1){0.12}}\linethickness{0.15mm} \multiput(20.00,0.00)(0.12,0.24){375}{\line(0,1){0.24}} \put(65.00,90.00){\vector(1,2){0.12}}\linethickness{0.15mm} \multiput(20.00,20.00)(0.12,0.12){167}{\line(1,0){0.12}} \put(40.00,40.00){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(20.00,40.00)(0.12,0.12){333}{\line(1,0){0.12}} \put(60.00,80.00){\vector(1,1){0.12}} \put(20.00,0.00){\makebox(0,0)[cr]{O\,}} \put(20.00,20.00){\makebox(0,0)[cr]{A\,}} \put(40.00,40.00){\makebox(0,0)[cl]{\,B}} \put(20.00,40.00){\makebox(0,0)[cr]{C\,}} \put(60.00,80.00){\makebox(0,0)[cl]{\,D}} \put(20.00,92.00){\makebox(0,0)[bc]{T axis}} \put(65.00,92.00){\makebox(0,0)[bc]{T' axis}} \put(20.00,20.00){\makebox(0,0)[tl]{\beta}} \put(20.00,40.00){\makebox(0,0)[tl]{\beta}} \end{picture} \]$$

 

[pervect]

$$\[ \unitlength 1mm \begin{picture}(85.00,95.00)(0,0) \linethickness{0.15mm} \put(20.00,0.00){\line(0,1){90.00}}\linethickness{0.15mm} \put(20.00,90.00){\line(0,1){0.12}} \linethickness{0.15mm} \put(20.00,90.12){\line(0,1){0.12}} \put(20.00,90.24){\vector(0,1){0.12}} \linethickness{0.15mm} \multiput(65.12,90.24)(0.12,0.24){1}{\line(0,1){0.24}} \put(65.24,90.48){\vector(1,2){0.12}} \linethickness{0.15mm} \multiput(40.12,40.12)(0.12,0.12){1}{\line(1,0){0.12}} \put(40.24,40.24){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(60.12,80.12)(0.12,0.12){1}{\line(0,1){0.12}} \put(60.24,80.24){\vector(1,1){0.12}}\linethickness{0.15mm} \multiput(20.00,0.00)(0.12,0.24){375}{\line(0,1){0.24}} \put(65.00,90.00){\vector(1,2){0.12}}\linethickness{0.15mm} \multiput(20.00,20.00)(0.12,0.12){167}{\line(1,0){0.12}} \put(40.00,40.00){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(20.00,40.00)(0.12,0.12){333}{\line(1,0){0.12}} \put(60.00,80.00){\vector(1,1){0.12}} \put(20.00,0.00){\makebox(0,0)[cr]{O\,}} \put(20.00,20.00){\makebox(0,0)[cr]{A\,}} \put(40.00,40.00){\makebox(0,0)[cl]{\,B}} \put(20.00,40.00){\makebox(0,0)[cr]{C\,}} \put(60.00,80.00){\makebox(0,0)[cl]{\,D}} \put(20.00,92.00){\makebox(0,0)[bc]{T axis}} \put(65.00,92.00){\makebox(0,0)[bc]{T' axis}} \put(20.00,20.00){\makebox(0,0)[tl]{\beta}} \put(20.00,40.00){\makebox(0,0)[tl]{\beta}} \put(20.00,7.00){\makebox(0,0)[bl]{\alpha}} \end{picture} \]$$

 

[pervect]

So, I just want to stick an "alpha" in the angle by the point marked O, why is the Latex source for this image invalid?

 

[dav2008]

Is there something I'm doing with wrong trying to get a line break?

$$a \\ b$$

$$a \ \ b$$

$$a \ \ b$$

Obviously the following works but it can get annoying

$$a$$
$$b$$

 

[robphy]

$$\[ \unitlength 1mm \begin{picture}(85.00,95.00)(0,0) \linethickness{0.15mm} \put(20.00,0.00){\line(0,1){90.00}}\linethickness{0.15mm} \put(20.00,90.00){\line(0,1){0.12}} \linethickness{0.15mm} \put(20.00,90.12){\line(0,1){0.12}} \put(20.00,90.24){\vector(0,1){0.12}} \linethickness{0.15mm} \multiput(65.12,90.24)(0.12,0.24){1}{\line(0,1){0.24}} \put(65.24,90.48){\vector(1,2){0.12}} \linethickness{0.15mm} \multiput(40.12,40.12)(0.12,0.12){1}{\line(1,0){0.12}} \put(40.24,40.24){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(60.12,80.12)(0.12,0.12){1}{\line(0,1){0.12}} \put(60.24,80.24){\vector(1,1){0.12}}\linethickness{0.15mm} \multiput(20.00,0.00)(0.12,0.24){375}{\line(0,1){0.24}} \put(65.00,90.00){\vector(1,2){0.12}}\linethickness{0.15mm} \multiput(20.00,20.00)(0.12,0.12){167}{\line(1,0){0.12}} \put(40.00,40.00){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(20.00,40.00)(0.12,0.12){333}{\line(1,0){0.12}} \put(60.00,80.00){\vector(1,1){0.12}} \put(20.00,0.00){\makebox(0,0)[cr]{O\,}} \put(20.00,20.00){\makebox(0,0)[cr]{A\,}} \put(40.00,40.00){\makebox(0,0)[cl]{\,B}} \put(20.00,40.00){\makebox(0,0)[cr]{C\,}} \put(60.00,80.00){\makebox(0,0)[cl]{\,D}} \put(20.00,92.00){\makebox(0,0)[bc]{T axis}} \put(65.00,92.00){\makebox(0,0)[bc]{T' axis}} \put(20.00,20.00){\makebox(0,0)[tl]{\beta}} \put(20.00,40.00){\makebox(0,0)[tl]{\beta}} \put(0.00,5.00){\makebox(0,0)[bl]{\alpha}} \end{picture} \]$$

$$\[ \unitlength 1mm \begin{picture}(85.00,95.00)(0,0) \linethickness{0.15mm} \put(20.00,0.00){\line(0,1){90.00}}\linethickness{0.15mm} \put(20.00,90.00){\line(0,1){0.12}} \linethickness{0.15mm} \put(20.00,90.12){\line(0,1){0.12}} \put(20.00,90.24){\vector(0,1){0.12}} \linethickness{0.15mm} \multiput(65.12,90.24)(0.12,0.24){1}{\line(0,1){0.24}} \put(65.24,90.48){\vector(1,2){0.12}} \linethickness{0.15mm} \multiput(40.12,40.12)(0.12,0.12){1}{\line(1,0){0.12}} \put(40.24,40.24){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(60.12,80.12)(0.12,0.12){1}{\line(0,1){0.12}} \put(60.24,80.24){\vector(1,1){0.12}}\linethickness{0.15mm} \multiput(20.00,0.00)(0.12,0.24){375}{\line(0,1){0.24}} \put(65.00,90.00){\vector(1,2){0.12}}\linethickness{0.15mm} \multiput(20.00,20.00)(0.12,0.12){167}{\line(1,0){0.12}} \put(40.00,40.00){\vector(1,1){0.12}} \linethickness{0.15mm} \multiput(20.00,40.00)(0.12,0.12){333}{\line(1,0){0.12}} \put(60.00,80.00){\vector(1,1){0.12}} \put(20.00,0.00){\makebox(0,0)[cr]{O\,}} \put(20.00,20.00){\makebox(0,0)[cr]{A\,}} \put(40.00,40.00){\makebox(0,0)[cl]{\,B}} \put(20.00,40.00){\makebox(0,0)[cr]{C\,}} \put(60.00,80.00){\makebox(0,0)[cl]{\,D}} \put(20.00,92.00){\makebox(0,0)[bc]{T axis}} \put(65.00,92.00){\makebox(0,0)[bc]{T' axis}} \put(20.00,20.00){\makebox(0,0)[tl]{\beta}} \put(20.00,40.00){\makebox(0,0)[tl]{\beta}} \put(0.00,5.00){\makebox(0,0)[bl]{\alpha}} \end{picture} \]$$

The use of \[ and \] I've always used in the \picture environment here
let me use the standard tags $\alpha$ for math symbols. I found this out by trial and error.

 

[robphy]

Is there something I'm doing with wrong trying to get a line break?

$$a \\ b$$

$$a \ \ b$$

$$a \ \ b$$

maybe we're in an mbox?
$$\begin{align*} a \\ b \end{align*}$$

$$\] a \\ b \[$$

$$\] a \\ b \[$$

From these last two posts, it seems one has more familiar control using
[ tex ] \] a \\ b \[ [ /tex ]
instead of the usual
[ tex ] a \\ b [ /tex ]

Did I mention that I really like $$\LaTeX$$? :tongue2:
(That's why I'm saddened that the preview mode is broken .)

 

[Hyperreality]

LaTeX

Just an aside, for those who'd like to have LaTeX on their computer http://http://www.artofproblemsolving.com/LaTeX/AoPS_L_Downloads.php" is the place to get it! The whole package is about 400MB.

 

[JonF]

$0<|x-x_0| <\delta => |sin(x) - sin(x_0)|< \epsilon$
$|sin(x)| - |sin(x_0)|<|sin(x) - sin(x_0)|<\epsilon$
$|sin(x)| - |x| < |sin(x)| - |sin(x_0)|< \epsilon$

 

[dav2008]

Fixed link: http://www.artofproblemsolving.com/LaTeX/AoPS_L_Downloads.php

maybe we're in an mbox?
$$\begin{align*} a \\ b \end{align*}$$

$$\] a \\ b \[$$

$$\] a \\ b \[$$

From these last two posts, it seems one has more familiar control using
[ tex ] \] a \\ b \[ [ /tex ]
instead of the usual
[ tex ] a \\ b [ /tex ]

Did I mention that I really like $$\LaTeX$$? :tongue2:
(That's why I'm saddened that the preview mode is broken .)

hmm ok thanks.

 

[renatzu]

$$d\vec{B} = \frac{\mu_0}{4\pi}(\frac{Id\vec{s}\times\hat{r}}{r^2})$$

$$\int B \cdot ds = \mu_0 I$$

$$B = \frac {\mu_0 * 2A}{4 * 2 \pi * .08 m }$$

$$F = \frac {2 k_m I_1 I_2 l}{d}$$

 

[-Job-]

Miktex has all kinds of packages available for download. In order to use these packages must i specifically indicate which to use in the latex code or is there an option to just use all available?