The main target of this book is to present a new concept of Ulam-type stability, i.e., multi-stability, through the classical, well-known special functions and

This volume presents cutting edge research from the frontiers of functional equations and analytic inequalities active fields. It covers the subject of function

This volume covers the topic in functional equations in a broad sense and is written by authors who are in this field for the past 50 years. It contains the bas

This book is an outcome of two Conferences on Ulam Type Stability (CUTS) organized in 2016 (July 4-9, Cluj-Napoca, Romania) and in 2018 (October 8-13, 2018, Tim