这是什么公式标记?

这是什么公式标记?

这是一个网页从 2013 年开始使用 TeX 样式公式标记的某些变体。现代 Chrome 和 Firefox 不再在此页面呈现公式语法。摘录:

$$P(text{CTR}_A,text{CTR}_B|text{data})$$ is a two-dimensional function of $$text{CTR}_A$$ and $$text{CTR}_B.$$  So to find $$P(text{CTR}_A>text{CTR}_B|text{data})$$ we have to add up all the probabilities in the region where $$text{CTR}_A>text{CTR}_B$$:

$$!P(text{CTR}_A > text{CTR}_B|text{data}) = iintlimits_{text{CTR}_A > text{CTR}_B} P(text{CTR}_A,text{CTR}_B|text{data}) dtext{CTR}_A dtext{CTR}_B.$$

To actually calculate this integral will require a few insights.  The first is that for many standard $$A/B$$ tests, $$A$$ and $$B$$ are independent because they are observed by non-overlapping populations.  Keeping this in mind, we have:

$$!P(text{CTR}_A,text{CTR}_B|text{data}) = P(text{CTR}_A|text{data}) P(text{CTR}_B|text{data}).$$

问题:

  1. 什么库/技术可以解释这个标记?
  2. 现在有没有简单的方法来渲染这些公式?也许我可以保存这些页面的 HTML 并通过某个渲染器运行它?或者也许有一个在线解释器?

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