Ulam Stability of Operators presents a modern, unified, and systematic approach to the field. Focusing on the stability of functional equations across single va

The notion of stability of functional equations of several variables in the sense used here had its origins more than half a century ago when S. Ulam posed the

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

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