%0 Journal Article %T Counting irreducible polynomials over finite fields using the inclusion-exclusion principle %A Sunil K. Chebolu %A Jan Minac %J Mathematics %D 2010 %I arXiv %X C. F. Gauss discovered a beautiful formula for the number of irreducible polynomials of a given degree over a finite field. Assuming just a few elementary facts in field theory and the exclusion-inclusion formula, we show how one see the shape of this formula and its proof instantly. %U http://arxiv.org/abs/1001.0409v6