Some of the most recent and significant results on homomorphisms and derivations in Banach algebras, quasi-Banach algebras, C*-algebras, C*-ternary algebras, no

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 handbook consists of seventeen chapters written by eminent scientists from the international mathematical community, who present important research works i

Presently no other book deals with the stability problem of functional equations in Banach algebras, inner product spaces and amenable groups. Moreover, in most

No books dealing with a comprehensive illustration of the fast developing field of nonlinear analysis had been published for the mathematicians interested in th