Christophe, thanks for your reply. Tables perhaps, but generated
pictures are very common in my opinion. Let me give you an example of
some code that fails in mathjax:
\]
\unitlength 1mm
\begin{picture}(55,90)(0,0)
\linethickness{0.3mm}
\put(20,10){\line(0,1){80}}
\linethickness{0.3mm}
\multiput(20,90)(0.12,-0.12){250}{\line(1,0){0.12}}
\linethickness{0.3mm}
\multiput(20,30)(0.12,0.12){250}{\line(1,0){0.12}}
\linethickness{0.3mm}
\multiput(20,10)(0.12,0.2){250}{\line(0,1){0.2}}
\put(15,30){\makebox(0,0)[cc]{t}}
\put(15,60){\makebox(0,0)[cc]{\gamma t}}
\put(15,90){\makebox(0,0)[cc]{k^2t}}
\put(55,60){\makebox(0,0)[cc]{kt}}
\end{picture}
\[