Hyers-Ulam Stability of Function Equations and Fractional Differential Equations - Paperbackby Yongjin Li (Author) The main purpose of this book is to present some of the old and recent results on Hyers Ulam stability of function equations and differential equations in Banach spaces, quasi Banach spaces, F spaces and group. The book provides a survey of both the latest and new results especially on the following topics: (1)Stability theory for several new functional equations in Banach spaces. (2)Stability of some functional equations and