A Wigner-type theorem in Banach spaces
arXiv:math/0011031
Abstract
We obtain an anlogue of Wigner's classical theorem on symmetries for Banach spaces. The proof is based on a result from the theory of linear preservers. Moreover, we present two other Wigner-type results for finite dimensional linear spaces over general fields.
7 pages. To appear in Publ. Math. (Debrecen)