This book is a collection of three introductory tutorials coming out of three courses given at the CIMPA Research School “Galois Theory of Difference Equation

Differential Galois theory is an important, fast developing area which appears more and more in graduate courses since it mixes fundamental objects from many di

Linear differential equations form the central topic of this volume, Galois theory being the unifying theme. A large number of aspects are presented: algebraic

This book shows how Lie group and integrability techniques, originally developed for differential equations, have been adapted to the case of difference equatio

The roots of the modern theories of differential and $q$-difference equations go back in part to an article by George D. Birkhoff, published in 1913, dealing wi