DOI link for Computational Methods
Computational Methods book
The results of this chapter, although apparently diverse, all have a strong bearing on the question of practical computation of the class-number, within the limits of the techniques now at our command. We focus on computations performed by hand. For complicated calculations, mathematicians and computer scientists have developed many software packages for algebraic computations. The website numbertheory.org provides a lengthy list of specialized packages, along with links to other useful information such as tables.