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问题:
After my investigating, I found mathjax can do this. But when write some example in my markdown file, it can't show the correct equations:
I have added this in the head of markdown file:
<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=default"></script>
And type the mathjax statement:
(E=mc^2)，$$x_{1,2} = \frac{-b \pm \sqrt{b^2-4ac}}{2b}.$$
But github show nothing for the math symbols! please help me, thanks!
Tell me how to show math symbols in general github markdown.
回答1:
But github show nothing for the math symbols! please help me, thanks!
GitHub markdown parsing is performed by the SunDown (ex libUpSkirt) library.
The motto of the library is "Standards compliant, fast, secure markdown processing library in C". The important word being "secure" there, considering your question :).
Indeed, allowing javascript to be executed would be a bit off of the MarkDown standard text-to-HTML contract.
Moreover, everything that looks like a HTML tag is either escaped or stripped out.
Tell me how to show math symbols in general github markdown.
Your best bet would be to find a website similar to yuml.me which can generate on-the-fly images from by parsing the provided URL querystring.
Update
I've found some sites providing users with such service: codedogs.com (no longer seems to support embedding) or iTex2Img.
You may want to try them out. Of course, others may exist and some Google-fu will help you find them.
given the following markdown syntax
it will display the following image
equation http://www.sciweavers.org/tex2img.php?eq=1%2Bsin%28mc%5E2%29&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=
Note: In order for the image to be properly displayed, you'll have to ensure the querystring part of the url is percent encoded. You can easily find online tools to help you with that task, such as www.url-encode-decode.com
回答2:
Markdown supports inline HTML. Inline HTML can be used for both quick and simple inline equations and, with and external tool, more complex rendering.
Quick and Simple Inline
For quick and simple inline items use HTML ampersand entity codes. An example that combines this idea with subscript text in markdown is: hθ(x) = θo x + θ1x, the code of which follows.
h<sub>θ</sub>(x) = θ<sub>o</sub> x + θ<sub>1</sub>x
HTML ampersand entity codes for common math symbols can be found here. Codes for Greek letters here.
While this approach has limitations it works in practically all markdown and does not require any external libraries.
Complex Scalable Inline Rendering with LaTeX and Codecogs
If your needs are greater use an external LaTeX renderer like CodeCogs. Create an equation with CodeCogs editor. Choose svg for rendering and HTML for the embed code. Svg renders well on resize. HTML allows LaTeX to be easily read when you are looking at the source. Copy the embed code from the bottom of the page and paste it into your markdown.
<img src="https://latex.codecogs.com/svg.latex?\Large&space;x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}" title="\Large x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}" />
This combines this answer and this answer.
GitHub support only somtimes worked using the above raw html syntax for readable LaTeX for me. If the above does not work for you another option is to instead choose URL Encoded rendering and use that output to manually create a link like:
This manually incorporates LaTex in the alt image text and uses an encoded URL for rendering on GitHub.
Multi-line Rendering
If you need multi-line rendering check out this answer.
回答3:
One other work-around is to use jupyter notebooks and use the markdown mode in cells to render equations.
Basic stuff seems to work perfectly, like centered equations
\begin{equation}
...
\end{equation}
or inline equations
$ \sum_{\forall i}{x_i^{2}} $
Although, one of the functions that I really wanted did not render at all in github was \mbox{}, which was a bummer. But, all in all this has been the most successful way of rendering equations on github.
回答4:
If just wanted to show math in the browser for yourself, you could try the Chrome extension GitHub with MathJax. It's quite convenient.
回答5:
While GitHub won't interpret the MathJax formulas, you can automatically generate a new Markdown document with the formulae replaced by images.
I suggest you look at the GitHub app TeXify:
GitHub App that looks in your pushes for files with extension *.tex.md and renders it's TeX expressions as SVG images
How it works (from the source repository):
Whenever you push TeXify will run and seach for *.tex.md files in your last commit. For each one of those it'll run readme2tex which will take LaTeX expressions enclosed between dollar signs, convert it to plain SVG images, and then save the output into a .md extension file (That means that a file named README.tex.md will be processed and the output will be saved as README.md). After that, the output file and the new SVG images are then commited and pushed back to your repo.
回答6:
Regarding tex→image conversion, the tool LaTeXiT produces much higher quality output. I believe it is standard in most TeX distributions but you can certainly find it online if you don't already have it. All you need to do is put it in the TeX, drag the image to your desktop, then drag from your desktop to an image hosting site (I use imgur).
回答7:
There is good solution for your problem - use TeXify github plugin (mentioned by Tom Hale answer - but I developed his answer in given link below) - more details about this github plugin and explanation why this is good approach you can find in that answer.
回答8:
I used the following in the head of mark down file
<script type="text/javascript" async
src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?
config=TeX-MML-AM_CHTML"
</script>
Then typed the following mathjax statement
$$x_{1,2} = \frac{-b \pm \sqrt{b^2-4ac}}{2b}.$$
It worked for me
