LaTeX Rendering Issue in Local Reduce Documentation Web Page

[Former user]

The square root sign for the L2 - norm doesn't show up for example, which is incorrect... see here: https://einsteintoolkit.org/thornguide/CactusNumerical/LocalReduce/documentation.html

[Roland Haas]

Can you provide a screenshot, please? For the L2 norm I see a square root sign:

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[Zach Etienne]

The issue is, neither Chrome nor Safari supports MathML, which breaks the rendering of equations in Einstein Toolkit documentation. Instead they support MathJax.

Following a separate discussion with Roland, he points out there is a “hybrid” TeX->HTML conversion option that would support both MathJax & MathML:

if we had a new enough htlatex (which we likely don't) then one can get a hybrid: https://tex.stackexchange.com/a/68962

For reference here is the same snippet but rendered in Chrome (84.0.4147.89).

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[Roland Haas]

Some more background information: Wikipedia has a list of browsers supporting MathML https://en.wikipedia.org/wiki/MathML) Chrome did support MathML at one point but phased it out https://www.cnet.com/news/google-subtracts-mathml-from-chrome-and-anger-multiplies/

Our server is that generates the HTML pages (from the release branch) is indeed too old to produce mathjax files. It can however produce files that render all equations as images.

[Roland Haas]

Addressed in pull request: https://bitbucket.org/cactuscode/cactus/pull-requests/100/use-mathjax-in-html-output

[Roland Haas]

Please review.

[Roland Haas]

Unless objected I will push after 2020-08-28.

[Roland Haas]

Applied as git hash c5dc10dc "Cactus: enable mathjax output for HTML docs" of cactus