1. For websites it is a little bit non-trivial. Just write the equations in Mathematica and save as xml+MathML type. Now open that xml file in any text editor and copy paste the portion starting with in the corresponding HTML code. That's it.

2. For blogs it's much easier. Just write the equation in LaTeX and sandwitch it between

http://l.wordpress.com/latex.php?latex=

&

+&bg=ffffff&fg=333333&s=0

like this

http://l.wordpress.com/latex.php?latex=S%3D- \frac{1}{\kappa} \int d^{N+1}x \sqrt{-G} \ \exp^{-2\phi} \left[ c %2B R \right]+&bg=ffffff&fg=333333&s=0 +&bg=ffffff&fg=333333&s=0

This gives the following equation.

This will generate the picture of the equation dynamically. Now add the image URL to the blog.

One word of caution. Some of the characters are not easily recognised, like =, +. For them use the HEX code instead. In the link presented above I have used the HEX code %3D instead of = . A quick way to get the HEX code is to go here (…

2. For blogs it's much easier. Just write the equation in LaTeX and sandwitch it between

http://l.wordpress.com/latex.php?latex=

&

+&bg=ffffff&fg=333333&s=0

like this

http://l.wordpress.com/latex.php?latex=S%3D- \frac{1}{\kappa} \int d^{N+1}x \sqrt{-G} \ \exp^{-2\phi} \left[ c %2B R \right]+&bg=ffffff&fg=333333&s=0 +&bg=ffffff&fg=333333&s=0

This gives the following equation.

This will generate the picture of the equation dynamically. Now add the image URL to the blog.

One word of caution. Some of the characters are not easily recognised, like =, +. For them use the HEX code instead. In the link presented above I have used the HEX code %3D instead of = . A quick way to get the HEX code is to go here (…