## Stirling's Formula

We may need to calculate factorials $$n!$$ from time to time. But we will easily get into a very large number as $$n$$ increases. We all know Stirling’s formula for calculating factorials: [more]

## Installing IEEEtrans style file on Debian

Debian can get LaTeX via apt-get. However, IEEE transactions’ style file cannot be obtained in this way. If you want to get the style file (normally named IEEEtran.cls) working in Debian, use the following steps. It is unbelievably easy. Make sure you have tetex-bin and others installed on Debian Obtain... [more]