## LaTeX

WordPress.com supports $\LaTeX$, a typesetting system that’s really good at formatting mathematical formulas and equations.

#### Using LaTeX

To include $\LaTeX$ code in your post, use the following format:

$latex your-latex-code-here$

For example,

$latex i\hbar\frac{\partial}{\partial t}\left|\Psi(t)\right>=H\left|\Psi(t)\right>$

produces $i\hbar\frac{\partial}{\partial t}\left|\Psi(t)\right>=H\left|\Psi(t)\right>$

If you wish to copy and paste this formula to test it out, we recommend pasting it as plain text.

#### LaTeX Error

If your $\LaTeX$ code is broken, instead of the equation you’ll see an ugly yellow and red error message. We can’t provide support for $\LaTeX$ syntax, but there are plenty of useful guides online. A quick post in our forums, or the Stack Exchange LaTex forum, might find you a solution. One thing to keep in mind is that WordPress puts all of your $\LaTeX$ code inside a $\LaTeX$ math environment. If you try to use $\LaTeX$ that doesn’t work inside the math environment (such as \begin{align} ... \end{align}), you will get an error: $\LaTeX&s=X$

#### LaTeX Size

You can change the size of the LaTeX by specifying an s parameter after the $\LaTeX$ code.

$latex \LaTeX&s=X$

Where X goes from -4 to 4 (0 is the default). These sizes correspond to $\LaTeX$‘s font size commands:

s=font sizeExample
-4\tiny $\LaTeX$
-3\scriptsize $\LaTeX$
-2\footnotesize $\LaTeX$
-1\small $\LaTeX$
0\normalsize (12pt) $\LaTeX$
1\large $\LaTeX$
2\Large $\LaTeX$
3\LARGE $\LaTeX$
4\huge $\LaTeX$

#### LaTeX Colors

WordPress tries to guess the background and foreground colors of your site and generates the $\LaTeX$ image accordingly. But, you can change the colors. You can specify bg and fg parameters after the $\LaTeX$ code to change the background and foreground colors, respectively. The colors must be in hexadecimal RGB format: ffffff for white, 0000ff for bright blue, etc.

$latex \LaTeX&bg=ffcccc&fg=cc00ff&s=4$ $\LaTeX$

#### LaTeX Packages

WordPress.com uses standard $\LaTeX$ with the following packages:

• amsmath
• amsfonts
• amssymb

For more information about $\LaTeX$, you can visit LaTeX documentation site and TeX Resources by American Mathematical Society.