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WP-Math-2 can help you insert math formula into WordPress posts or comments. You can use <code>$$...$$</code>(block, only one math expression per line) and <code>$...$</code>(inline, around the text) to insert math. This plugin will render them to HTML or MathML code snippets(Depends on your browser. If your browser supports MathML, it will use MathML, otherwise, use HTML and CSS instead). This work is done by javascript. So your browser must enable JavaScript.
But in most of RSS readers, any JavaScript snippets cannot execute. So I made a trick. WP-Math-2 will convert LaTeX text to images. So users can see math contents with their favorite RSS reader software.

WP-Math-2

WP-Math-2 is a plugin that can convert LaTeX math formula to HTML of images, so that the formula could be shown in browser.

eoghanmcilwaine

Type complex math expressions easily into your wordpress page using MathQuill (http://mathquill.com/). This plugin adds a new block editor called ‘Direct math input’ in the ‘widgets’ category.
Math expressions are saved in LaTeX format and rendered by MathQuill during pageview.
<h4>Usage</h4>
After installing, a new block editor called ‘Direct math input’ will be available. Each block contains a MathQuill instance 
where you can edit math right on your page.
When the math editor is focused, you can enter math symbols using your keyboard or via copy/paste. 
See the http://mathquill.com/ homepage for a visual demonstration of how to input math.
Some common keyboard shortcuts are as follows:
<ul>
<li>/ (forward slash) Enter a new fraction, with focusable input areas for numerator and denominator</li>
<li>^ (caret) Enter a new superscript, e.g. to add an exponent</li>
<li>_ (underscore) Enter a new subscript </li>
<li>( (open parentheses) Open parentheses (which will scale based on the height of the content inside) Other parenthesis types behave similarly, e.g. [ and {</li>
<li>\ (backslash) Start typing one of the control sequences below. When finished, press enter or space to see the resulting symbol</li>
</ul>
Control sequences – to create each symbol, type the full sequence (including the backslash) into the math editor, followed by 
space or enter. (not an exhaustive list)
<ul>
<li>\plusminus</li>
<li>\times</li>
<li>\alpha</li>
<li>\beta</li>
<li>\gamma</li>
<li>\delta</li>
<li>\Alpha</li>
<li>\Beta</li>
<li>\Gamma</li>
<li>\Delta</li>
<li>\summation</li>
<li>\prod</li>
<li>\int</li>
<li>\sqrt</li>
<li>\nthroot</li>
<li>\lt</li>
<li>\gt</li>
<li>\le</li>
<li>\ge</li>
<li>\approx</li>
<li>\doteq</li>
<li>\neq</li>
<li>\nless</li>
<li>\ngtr</li>
<li>\intersection</li>
<li>\union</li>
<li>\subset</li>
<li>\superset</li>
<li>\notsubset</li>
<li>\nosuperset</li>
<li>\subseteq</li>
<li>\isin</li>
<li>\contains</li>
<li>\notcontains</li>
<li>\Complex</li>
<li>\Hamiltonian</li>
<li>\Imaginary</li>
<li>\Naturals</li>
<li>\Primes</li>
<li>\Rationals</li>
<li>\Reals</li>
</ul>

Direct math input with MathQuill

Type complex math expressions easily into your wordpress page using MathQuill (http://mathquill.com/). This plugin adds a new block editor called &#03 …

WP-Math-2 vs Direct math input with MathQuill