On the norm-preservation of squares in real algebra representation. (English) Zbl 1476.46057
Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 115, No. 4, Paper No. 159, 12 p. (2021).
Reviewer: Pablo Galindo (Burjassot)
MSC:
46J10