Commutativity preserving mappings in Banach algebras

M. Brešar, G. M. Escolano, A. Peralta +1

Let $A$ and $B$ be unital complex Banach algebras having no quotients isomorphic to $\mathbb{C}$ or $M_2(\mathbb{C})$. Assume additionally that $B$ is semisimple. If a surjective a…