This work introduces the reader to fitted numerical methods for solving singularly perturbed differential equations. The performance of fitted methods is not adversely affected by the value of the perturbation parameter. The book concentrates on fitted mesh methods. These methods focus on the appropriate distribution of the mesh points for singularly perturbed problems. The fitted mesh algorithm is particularly simple to implement in practice, but the theory of why these methods work is far from simple. The book introduces the reader to the theory behind these novel numerical methods.

This book offers an ideal introduction to singular perturbation problems, and a valuable guide for researchers in the field of differential equations.