This book deals with the characterization of probability distributions. It is well known that both the sum and the difference of two Gaussian independent random

It is well known that if two independent identically distributed random variables are Gaussian, then their sum and difference are also independent. It turns out

This book is devoted to the possible applications of spectral analysis and spectral synthesis for convolution type functional equations on topological abelian g

This book presents current research on Ulam stability for functional equations and inequalities. Contributions from renowned scientists emphasize fundamental an

This book studies the situation over discrete Abelian groups with wide range applications. It covers classical functional equations, difference and differential