Davide P. Cervone

This is due to the changes from mathjax/MathJax-src/pull/1069, which left out a check after https://github.com/mathjax/MathJax-src/blob/70ea011e8f84eeefb352e5167e843a6033c42d3a/ts/input/tex/base/BaseMethods.ts#L260 like https://github.com/mathjax/MathJax-src/blob/70ea011e8f84eeefb352e5167e843a6033c42d3a/ts/input/tex/base/BaseMethods.ts#L161 Here is a configuration that can be used to add that in: ```...

The glyph needed for the `\updownarrows` and `\downuparrows` are not the the MathJax TeX fonts used by MathJax v3 and below. This is because the Mathjax TeX fonts are based...

Yes, GitHub did don't include `\newcommand`, and had some problems with their implementation (though they have improved on that). There are other Markdown engines that do handle MathJax much better...

PS, you can, of course, enter the Unicode characters ⇅ and ⇵ directly into an expression in order to get these symbols as well (without the need for a macro)...

We do not have an implementation of the `fitch` package for MathJax. It doesn't look like it would be too hard to do, but our resources are currently going toward...

You are right, sorry. I didn't recognize the difference. the conversion to MathJax would not be a direct translation of the original LaTeX code, but a new js version that...

@JWDhast, `rowspan` and `colspan` are certainly on the list of things to do, but it won't happen until after the v4.0 release, and I'm not sure when after that. It...

Thanks for the report and for isolating the issue. Since we haven't implemented `` and ``, these haven't been tested much, I'm afraid. In any case, here is a configuration...

This is a duplicate of #2923, #2984, and #3117, and is resolved in v4 (now in beta release)

The output is correct for your MathML. Remember that a parenthesis will stretch to the size of the largest item in the `mrow` (explicit or implied) that contains the parenthesis....