This book presents a self-contained and unified introduction to the properties of analytic functions. Based on recent research results, it provides many example

This textbook is a completely revised, updated, and expanded English edition of the important Analyse fonctionnelle (1983). In addition, it contains a wealth of

This book takes a comprehensive look at mean value theorems and their connection with functional equations. Besides the traditional Lagrange and Cauchy mean val

The theory of hypergroups is a rapidly developing area of mathematics due to its diverse applications in different areas like probability, harmonic analysis, et

A cohesive and comprehensive account of the modern theory of iterative functional equations. Many of the results included have appeared before only in research