[WARNING] Could not convert TeX math y = \beta_0 + \sum_{i=1}^{999}\beta_i x_i, rendering as TeX

[XiangyunHuang]

Bug description

LaTeX math can't be rendered when output is epub format.

Step 1. Create a Quarto Book followed by RStudio IDE's guides.

Step 2. Insert some math to index.qmd, here are some examples.

$y = \beta_0 + \sum_{i=1}^{999}\beta_i x_i$

$$
S_k = \sum_{x=0}^{k} p_x
$$

$$
p_x = \binom{n}{x}p^x(1-p)^{n-x}, \quad x = 0,1,\cdots,n
$$

Step 3. then Render EPUB, and we will see

Output from Render Book

Output from EPUB Book

My session info

I use Quarto 1.2.269. more info about my session, please see

sessionInfo(package = c("knitr","rmarkdown"))
R version 4.2.2 (2022-10-31)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Ventura 13.0.1

Matrix products: default
LAPACK: /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
character(0)

other attached packages:
[1] knitr_1.41     rmarkdown_2.18

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.9      grDevices_4.2.2 ps_1.7.2        digest_0.6.30   later_1.3.0     jsonlite_1.8.3 
 [7] evaluate_0.18   datasets_4.2.2  rlang_1.0.6     utils_4.2.2     cli_3.4.1       rstudioapi_0.14
[13] graphics_4.2.2  base_4.2.2      tools_4.2.2     yaml_2.3.6      xfun_0.35       fastmap_1.1.0  
[19] compiler_4.2.2  processx_3.8.0  stats_4.2.2     htmltools_0.5.3 methods_4.2.2   quarto_1.2 

RStudio 2022.07.2+576 "Spotted Wakerobin" Release (e7373ef832b49b2a9b88162cfe7eac5f22c40b34, 2022-09-06) for macOS
Mozilla/5.0 (Macintosh; Intel Mac OS X 13_0_1) AppleWebKit/537.36 (KHTML, like Gecko) QtWebEngine/5.12.10 Chrome/69.0.3497.128 Safari/537.36

Checklist

• Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
• Please format your issue so it is easier for us to read the bug report.
• Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
• Please document the operating system you're running. If on Linux, please provide the specific distribution.

[XiangyunHuang]

The math can't be rendered either when I put the math into the Bookdown Book. I guess the root cause is from Pandoc or EPUB. Am I right?

[bwelman]

With EPUB3, MathML has become part of the EPUB standard. So use in _quarto.yml

format:
  epub:
    html-math-method: mathml

[XiangyunHuang]

@bwelman Thanks.