Stability of Functional Equations in Banach Algebras

“The book under review provides an account of some of the most recent and significant results on the stability of homomorphisms and derivations. ... This beautiful book is well written, in a clear self-contained and reader-friendly style. It will prove to be very useful for self-study and seminars. It belongs in every library collection. I recommend it to graduate students and specialists working in functional equations, in functional analysis as well as in physics and engineering.” (Paşc Găvruţă, zbMATH 1323.39025, 2015)