Can I add LaTeX packages to MathJax?

Question

I have some mathematical expressions written in LaTeX that I would like to put on a webpage. However, they use packages that don\'t seem to be included in MathJax (e.g. yta

Answer 1

Is there a way of using LaTeX packages with MathJax? If so, how would I do this?

1. First the StackExchange site must support MathJax.

2. You need to use the correct syntax for the particular site .

   Some sites require a backslash before the dollar sign, because when people try to write "it costs $10 shipping each time" they end up with "it costs $10 shippingeachtime", so to avoid excessive questions about why that happens the dollar sign must be escaped to use MathJax on some sites.

3. You need to use $\require{\packagename}$ somewhere on the page, and it affects the whole page (including other people's posts).

4. The site in question needs to support the extension. The official (but incomplete) list is here: "MathJax third-party extensions".

The most complete MathJax Tutorial and Links answer is over at QC.meta.SE.

Specific to your question, "ytableau" didn't work on the site where I tested these examples (physics.SE) but the other packages I demonstrate do work:

$\require{\AMScd}$

$$\begin{CD}
A @<<< B @>>> C\\
@. @| @AAA\\
@. D @= E
\end{CD}$$

$\require{\mhchem}$

$$\ce{Zn^2+  <=>[+ 2OH-][+ 2H+]  
$\underset{\text{zinc hydroxide}}{\ce{Zn(OH)2 v}}
$  <=>[+ 2OH-][+ 2H+] 
$\underset{\text{tetrahydroxozincate(II)}}{\ce{[Zn(OH)4]^2-}}$}$$

_{The mhchem example was obtained from the MathJax-mhchem webpage.}

Test a short example to determine if and how it works. Worst come to worst you can compose on a supporting site, capture and crop a screenshot, then enclose the MathJax in HTML comments and upload the screenshot - if in the future MathJax is enabled the code will be available in your question or answer within the HTML comment.