Departamento de Matemáticas, Universidad de Zaragoza, 50009 Zaragoza, Spain ; Departamento de Matemáticas, Universidad de Zaragoza, 50009 Zaragoza, Spain
Abstract:
Composition algebras with a unit element constitute a well-known class of algebras. In this paper, those composition algebras with a one-sided unit element are characterized and examples are given of arbitrary infinite dimension.