## Nearly ring homomorphisms and nearly ring derivations on non-Archimedean Banach algebras.(English)Zbl 1218.46050

Summary: We prove the generalized Hyers-Ulam stability of homomorphisms and derivations on non-Archimedean Banach algebras. Moreover, we prove the superstability of homomorphisms on unital non-Archimedean Banach algebras and we investigate the superstability of derivations in non-Archimedean Banach algebras with bounded approximate identity.

### MSC:

 46S10 Functional analysis over fields other than $$\mathbb{R}$$ or $$\mathbb{C}$$ or the quaternions; non-Archimedean functional analysis 39B82 Stability, separation, extension, and related topics for functional equations
Full Text: