How to write bold but non-Italic Geek letters in bookdown html

[wangzhen89]

Hi guys,

How to write bold but non-Italic Greek letters in bookdown html? One solution may be the commond \symrm, but it doesn't work for me, as it failed to render .

I've checked here, there is \symrm in the list. So I can't figure out why.

Thanks!

[cderv]

I've checked here, there is \symrm in the list. So I can't figure out why.

I believe bookdown is using mathjax 2.7 by default. and the command is not there: https://docs.mathjax.org/en/v2.7-latest/tex.html

Unfortunately using a different version is not well supported in bookdown without some bigger adjustment

• Not possible use a newer version of Mathjax #1364
• Custom MathJax URL not working #915

So I don't have easy solution around this, except if you can define a custom command to reproduce the symrm maybe

[wangzhen89]

I got it, thanks!

[wangzhen89]

Hi, Dear cderv, maybe I have a solution from here

Is there any way to set to the URL of the MathJax to https://cdn.jsdelivr.net/npm/mathjax@2.7.9/unpacked/MathJax.js?config=TeX-AMS_HTML?

Thanks!

[cderv]

Unfortunately not in bookdown right now. See

• Custom MathJax URL not working #915

that I linked above

[wangzhen89]

Thanks!