RSS output MathJax equations

how to enable MathJax in RSS feeds for hugo?

You can NOT do it in RSS self.

RSS and ATOM are XML files, you can use XSLT to transform it to HTML for viewing.
Not any browser will do this.

I use ATOM with CSS to create a usable view in any browser. But this let TeX unchanged.

Users with technical background can understand the TeX syntax. Blend in a note to see the correct formula on the web page.

IF you find a clever sulution - please post it here!