Introducing LaTeX Math Typesetting

[bomba923]

Can someone please tell me the latex code for the little circle which denotes composition of functions?

Do you mean this symbol?

$$\circ$$

Just click on my LaTeX code. Here's an example:

$$f \circ g$$

 

[Alteran]

Could anyone suggest modern LaTeX to HTML utility for win32 system?
I imagine my visualization of documents as: in HTML there are LaTeX documents(or simply block of LaTeX code) and when displaying it will be transformed to HTML or image and will be visible as normal math (just as on this forum).

 

[Corneo]

Why is that every time I write a math equation and when I click preview, I can never see the equation. I always just see the message telling me that the graphic is being generated. I have to submit my message first before I can see it. Can anyone please explain.

 

[VietDao29]

Why is that every time I write a math equation and when I click preview, I can never see the equation. I always just see the message telling me that the graphic is being generated. I have to submit my message first before I can see it. Can anyone please explain.

That's an error with the update, and Greg is working on it.
You can read here :)

 

[Captain Zappo]

How do I insert a line break?

How do I insert a line break? I have read the pdf file explaining the different commands. I have tried the following:

\\
\ \
\\
\ \
\linebreak
\linebreak[4]
\linebreak[0]

and many others. All help would be appreciated.

 

[VietDao29]

How do I insert a line break? I have read the pdf file explaining the different commands. I have tried the following:

\\
\ \
\\
\ \
\linebreak
\linebreak[4]
\linebreak[0]

and many others. All help would be appreciated.

You may want to try \begin{array} and \end{array} commands.
Click on my LaTeX image to see the code.
$$\begin{array}{l} \mbox{Text 1} \\ \mbox{Text 2} \\ \frac{x}{2} = \frac{\gamma + \beta}{\varepsilon} \end{array}$$
This is covered in 3 .PDF files in the first post of this thread.

 

[michealsmith]

wow i have to ask how do u do that ...(btw thanks a lot)

 

[Perturbation]

Is there a latex command for Feynman diagrams or contractions in QFT (the lines joining operators to denote propogators and things)?

 

[bomba923]

Hmm...I usually just delete and repost should any
problems with $$\LaTeX$$ previewing occur :shy:

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

 

[Hootenanny]

How do you write 3D column vectors in $\LaTeX$?

 

[electronic engineer]

In my last post I've written:
v(w)=integral(v(t)*e^-jwt) ; - infinity<t<+infinity

how can i write it using latex?

https://www.physicsforums.com/showthread.php?t=113920
thanks.

 

[Doc Al]

In my last post I've written:
v(w)=integral(v(t)*e^-jwt) ; - infinity<t<+infinity

how can i write it using latex?

Page through this thread and you'll find several examples of integrals that you can copy.

 

[robphy]

$$\]<br /> <br /> \unitlength 1mm<br /> \begin{picture}(55,90)(0,0)<br /> \linethickness{0.3mm}<br /> \put(20,10){\line(0,1){80}}<br /> \linethickness{0.3mm}<br /> \multiput(20,90)(0.12,-0.12){250}{\line(1,0){0.12}}<br /> \linethickness{0.3mm}<br /> \multiput(20,30)(0.12,0.12){250}{\line(1,0){0.12}}<br /> \linethickness{0.3mm}<br /> \multiput(20,10)(0.12,0.2){250}{\line(0,1){0.2}}<br /> \put(15,30){\makebox(0,0)[cc]{t}}<br /> \put(15,60){\makebox(0,0)[cc]{\gamma t}}<br /> \put(15,90){\makebox(0,0)[cc]{k^2t}}<br /> <br /> \put(55,60){\makebox(0,0)[cc]{kt}}<br /> <br /> \end{picture}<br /> \[$$

 

[RyanJ]

$$\]<br /> \unitlength 1mm<br /> \begin{picture}(55, 90)(0, 0)<br /> \linethickness{0.3mm}<br /> \put(20, 10){\line(0,1){80}}<br /> \linethickness{0.3mm}<br /> \multiput(20, 90)(0.12,-0.12){250}{\line(1, 0){0.12}} <br /> \linethickness{0.3mm}<br /> \multiput(20, 10)(0.12,0.2){250}{\line(0, 1){0.2}}<br /> \put(15, 55){\makebox(0, 0)[cc]{c}}<br /> \put(40, 76){\makebox(0, 0)[cc]{a}}<br /> \put(42, 39){\makebox(0, 0)[cc]{b}}<br /> \end{picture}<br /> \[$$

Woo.. finally looks right :D

$$c^2 = a^2 + b^2$$

Ignore this please, messing with the triangle above :D

Cheers,

Ryan Jone

 

[RyanJ]

$$\begin{tabular}[t]{|l|ccccc|c|}<br /> \multicolumn{7}{c}{USAMTS Scores Round 1}\\<br /> \hline<br /> Name & \# 1 & \# 2 & \# 3 & \# 4 & \# 5 & Total\\<br /> \hline<br /> John Doe & 5 & 5 & 3 & 2 & 1 & 16\\<br /> Jane Doe & 5 & 5 & 5 & 4 & 5 & 24\\<br /> Richard Feynman & 5 & 5 & 5 & 5 & 5 & 25\\<br /> \hline<br /> \end{tabular}$$

 

[electronic engineer]

$$v(w)=int^{+infty}^{-infty} v(t) \e^{-jwt}, \dt$$

 

[Living_Dog]

Hmmm well, I thought I knew how, but now I'm not so sure. I'll have to look around. Maybe Ambitwistor knows a trick to put a command that has been \renew'd back to its default behavior.

Also, I found this pdf of useful mathematical constructs, that goes a bit beyond what we already have:

http://amath.colorado.edu/documentation/LaTeX/Symbols.pdf

- Warren

Thank you!

I was looking for the integral over a closed surface symbol and the list had it: $$\large \oint$$.

-LD

 

[PhilosophyofPhysics]

$$\Phi_F = \oint \vec{\ F} \cdot \vec{dA}$$

$$\oint \vec{\ F} \cdot \vec{ds} = \nu_0 m_c_e_n_c$$

$$\oint \vec{\ G} \cdot \vec{dl} = - \frac{d \Phi _F}{dt}$$



$$\Phi_G = \oint \vec{\ G} \cdot \vec{dA} = \frac{m_e_n_c}{\gamma _0}$$

$$\vec{\ F _f} = m \vec{\ v} \times \vec{F}$$

$$\vec{\ F _f} = m_c \vec{\ L} \times \vec{F}$$

$$d\vec{\ F} = \frac{\nu _0}{4\pi} \frac{m_c \vec{\ ds} \times \vec{r}}{r^3}$$

$$u_G = \frac{1}{2}\gamma _0 G^2$$

$$u_F = \frac{F^2}{2\nu _0}$$

 

[AKG]

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

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

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

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

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

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

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

 

[Living_Dog]

Circles and Beyond

The PSPICTURE Environment:
http://www.ursoswald.ch/LaTeXGraphics/pstricks/pstricks.html


NASA Index of LaTeX instructions plus so much more:
http://www.giss.nasa.gov/tools/latex/ltx-2.html

-LD

PS: I tried a few and none of it works here. So I editted the post down to the URLs as an FYI.

 

[robphy]

$$\]<br /> <br /> \unitlength 1mm<br /> \begin{picture}(55,90)(0,0)<br /> \linethickness{0.3mm}<br /> \put(20,10){\line(0,1){80}}<br /> \linethickness{0.3mm}<br /> \multiput(20,90)(0.12,-0.12){250}{\line(1,0){0.12}}<br /> \linethickness{0.3mm}<br /> \multiput(20,30)(0.12,0.12){250}{\line(1,0){0.12}}<br /> \linethickness{0.3mm}<br /> \multiput(20,10)(0.12,0.2){250}{\line(0,1){0.2}}<br /> \put(15,30){\makebox(0,0)[cc]{t}}<br /> \put(15,60){\makebox(0,0)[cc]{\gamma t}}<br /> \put(15,90){\makebox(0,0)[cc]{k^2t}}<br /> <br /> \put(55,60){\makebox(0,0)[cc]{kt}}<br /> <br /> \end{picture}<br /> \[$$

Let me try...

$$\]<br /> \usepackage{pstricks, pstcol, pst-text}<br /> <br /> \begin{pspicture}(-4, -3.2)(3, 0.2)<br /> \psset{linecolor=white} % hidden<br /> \pstextpath<br /> {\pscurve(-4, -2)(-2, 0)(0, -3)(2, -1)%<br /> (3, -2)(5, -3)}<br /> {\color{blue} % font color<br /> If you want to type<br /> (a+b)^n=\sum_{k=0}^n {n\choose k}<br /> a^{n-k}b^k and let it follow along <br /> a curving line \ldots} <br /> \end{pspicture} <br /> \[$$
I think the problem is that a line like
"\usepackage{pstricks, pstcol, pst-text}"
may call packages that are unavailable to this system... or maybe it's that this line must come before the \begin{document} line, which we wouldn't have access to.

I think you'll just have to make do with the picture environment.
But one can get it to do some interesting stuff...
for example, https://www.physicsforums.com/showpost.php?p=261562&postcount=300

 

[Perturbation]

Is there a latex command for Feynman diagrams or contractions in QFT (the lines joining operators to denote propogators and things)?

Anyone? They would be kinda useful.

 

[Greg Bernhardt]

$latex$

trwegfdgdfgfd

 

[Greg Bernhardt]

$latex$

fsdagdfgsdgf

 

[chroot]

$E=mc^6$

- Warren

 

[chroot]

$\begin{gathered}<br /> \varepsilon _x = \bar \varepsilon _x = \frac{{d^2 }}<br /> {{12}}\left( {M^2 - 1} \right) \hfill \\<br /> d = \sqrt {\frac{{12\bar \varepsilon _x }}<br /> {{M^2 - 1}}} \hfill \\<br /> M = \sqrt {\frac{{12\bar \varepsilon _x }}<br /> {{d^2 }} + 1} \hfill \\ <br /> \end{gathered}$

LaTeX is functional again.

- Warren

 

[dav2008]

What's up with the white background?

 

[robphy]

$$\] \unitlength 1mm \begin{picture}(55,90)(0,0) \linethickness{0.3mm} \put(20,10){\line(0,1){80}} \linethickness{0.3mm} \multiput(20,90)(0.12,-0.12){250}{\line(1,0){0.12}} \linethickness{0.3mm} \multiput(20,30)(0.12,0.12){250}{\line(1,0){0.12}} \linethickness{0.3mm} \multiput(20,10)(0.12,0.2){250}{\line(0,1){0.2}} \put(15,30){\makebox(0,0)[cc]{t}} \put(15,60){\makebox(0,0)[cc]{\gamma t}} \put(15,90){\makebox(0,0)[cc]{k^2t}} \put(55,60){\makebox(0,0)[cc]{kt}} \end{picture} \[$$

$$\mbox{transparency gone?}$$ with tex

$\mbox{transparency gone?}$ with latex

$\mbox{transparency gone?}$ with itex

preview working?

 

[bomba923]

$$\begin{gathered}<br /> {\text{CH}}_4 + 2{\text{O}}_2 \to {\text{CO}}_2 + 2{\text{H}}_2 {\text{O}} \hfill \\<br /> 2{\text{C}}_2 {\text{H}}_6 + 7{\text{O}}_2 \to 4{\text{CO}}_2 + 6{\text{H}}_2 {\text{O}} \hfill \\<br /> 2{\text{C}}_2 {\text{H}}_4 + 3{\text{O}}_2 \to 2{\text{CO}}_2 + 2{\text{H}}_2 {\text{O}} \hfill \\<br /> 2{\text{C}}_2 {\text{H}}_2 + 5{\text{O}}_2 \to 4{\text{CO}}_2 + 2{\text{H}}_2 {\text{O}} \hfill \\ <br /> \end{gathered}$$

 

[Hootenanny]

$$\LaTeX$$

-White Background ?