If you are running Debian, it is strongly suggested to use a package manager like aptitude or synaptic to download and install packages, instead of doing so manually via this website.

You should be able to use any of the listed mirrors by adding a line to your /etc/apt/sources.list like this:

deb http://ftp.de.debian.org/debian stretch main


Replacing ftp.de.debian.org/debian with the mirror in question.

You can download the requested file from the pool/main/m/mathjax/ subdirectory at any of these sites:

North America

South America

Asia

Africa

Europe

Oceania

If none of the above sites are fast enough for you, please see our complete mirror list.

Note that in some browsers you will need to tell your browser you want the file saved to a file. For example, in Firefox or Mozilla, you should hold the Shift key when you click on the URL.