2 papers
math.OA2026
A metric characterization of projections among positive norm-One elements in unital C-algebras
Antonio M. Peralta, Pedro Saavedra
We characterize projections among positive norm-one elements in unital C-algebras in pure geometric terms determined by the norm of the underlying Banach space. Concretely, let…
math.OA2025
Identifying JBW-algebras through their spheres of positive elements
Antonio M. Peralta, Pedro Saavedra
Let and be JBW-algebras with projection lattices and , and let $Θ: \mathcal{P} (\mathfrak…