MathML rendering tools isn't as good as LaTeX. Firefox/Gecko has the best
implementation so far. "Community WebKit" (e.g. used by [Epiphany]) and
"Apple Webkit" (e.g. used by Safari) have some basic support to MathML
but Chromium/Chrome don't have neither Internet Explorer.
Most of the EPUB readers that support MathML use Gecko as rendering engine or
MathJax that requires Javascript enabled.
> However, I recently figured out that
> ePub seems to support SVG as well and it is actually possible to turn LaTeX
> into SVG output (see e.g. http://dvisvg.sourceforge.net/ and
> http://svgkit.sourceforge.net/SVGLaTeX.html).
That's true. Wikipedia does it.