weak amenability of ultrapowers of banach algebras

We study when weak amenability of banach algebras are stable under the ultrapower constructions. we extend some general results of weak amenability of banach algebras to their ultrapowers. a banach algebra a is ultra-weakly amenable, if every ultrapower of it is weakly amenable. we further investigate the relationship between ultra-weak amenability, (weak)amenability, and ultra-amenability. we provide an example of an ultra-weakly amenable banach algebra that is not amenable and vice versa.