The math formulas in this blog is generated by $\LaTeX$ language.

To know what the $\LaTeX$ is briefly, you can go to the references here (English versionChinese version). In a shorter word, $\LaTeX$ is language that people use to generate text, espeically with mathematical formula. This is like people use HTML language to write webpages and MATLAB language to perform numerical simulations. $\LaTeX$ is the best way to edit text containing math expressions, comparing ti Microsoft Office Word, Mathtype, and other softwares. (mathtype is actually $\LaTeX$ cored). It is widely accepted in the academic world. Most math journals not only accept but also require $\LaTeX$ code file for submitting papers.

$\LaTeX$ is an open language. To use it, you need a editor (support UTF-8) and a compiler. For the editor, you can use any program you want, like the notepad in Windows. There are a lot of free $\LaTeX$-special editors. (An almost comprehensive list can be found here.) For the compiler, the common ones are Miktex (for PC) or TexLive (for Mac). Ubuntu user can go to the software center and look for latex. If you are a windows user, please go here, download the most recent version of Miktex (now is 2.9), and install it. It comes with a free editor ‘texworks’, which is very small and easy to use.

It is not very hard to learn and use $\LaTeX$. There are already numerous artitles, manuls, and books talking about it. You can find some good references here. The WordPress.com blogging system supports $\LaTeX$, and there is only slice differences. To know how to embed $\LaTeX$ formulas in the posts and comments, please go here.

I would like to help you if you have any questions concerning $\LaTeX$. Please email me.