Hello, It seems the docstring of org-html-mathjax-options may need to be updated.
I tried setting 'autonumber' to "None", as the docstring suggests, but only the lower-cased "none" worked fine. Also, MathJax documentation for 2.7 (the version I've got HTML rendered with by org-mode) mentions "AMS", not "AMS Math" (http://docs.mathjax.org/en/v2.7-latest/tex.html). Another option that needs attention is 'indent'. The docstring contains the phrase 'Valid values are "left" and "right"'. This phrase should be changed to something like 'An example of a valid value is "2em"' or simply removed, I think. I didn't look into all the rest of this option documented elements, so others might need some attention too. Thanks, YE Emacs : GNU Emacs 28.0.90 (build 1, x86_64-apple-darwin21.1.0, NS appkit-2113.00 Version 12.0.1 (Build 21A559)) of 2021-12-03 Package: Org mode version 9.5.1 (release_9.5.1-11-g96d91b @ emacs-28.0.90/lisp/org/)