Why? What's wrong with Matjax? The forum uses Matjax.

\[(H^{-1})_{ij} = (-1)^{i+j}(i + j - 1) \binom {n + i - 1}{n - j} \binom {n + j - 1}{n - i} \binom {i + j - 2}{i - 1}^2\]
or inline text: \((H^{-1})_{ij} = (-1)^{i+j}(i + j - 1) \binom {n + i - 1}{n - j} \binom {n + j - 1}{n - i} \binom {i + j - 2}{i - 1}^2\) (just replaced dollars with \( etc. in Serge's formula)

[QUOTE=LaurV;562895]Why? What's wrong with Matjax? The forum uses Matjax.[/QUOTE]Yes, I know.

Mat[b]h[/b]jax is JS, so therefore not happening here.

[QUOTE=retina;562886]This is tex:
[tex]\((H^{-1})_{ij} = (-1)^{i+j}(i + j - 1) \binom {n + i - 1}{n - j} \binom {n + j - 1}{n - i} \binom {i + j - 2}{i - 1}^2\)[/tex][/QUOTE]

It's not TeX, although the command is called that way. From the [URL="http://ctan.math.illinois.edu/support/mimetex/mimetex.html"]CTAN site[/URL] of mimeTeX (which is what is rendering that GIF):
[QUOTE]mimeTeX is an entirely separate little program that doesn't use TeX or its fonts in any way.[/QUOTE]

That's the reason why it looks so bad.

[QUOTE=kruoli;562900]That's the reason why it looks so bad.[/QUOTE]Looks fine to me. Better than the run-on line of text.

This is what I see (with backslash replaced by forward slash to prevent your fancy JS from seeing it):
/((H^{-1})_{ij} = (-1)^{i+j}(i + j - 1) /binom {n + i - 1}{n - j} /binom {n + j - 1}{n - i} /binom {i + j - 2}{i - 1}^2/)