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math.RA2015
The radius in matrix algebras--Examples and remarks
Moshe Goldberg
The main purpose of this note is to illustrate how the radius in a finite-dimensional power-associative algebra over a field , either or , may…
math.RA2015
On the Radius in Cayley-Dickson Algebras
Moshe Goldberg, Thomas J. Laffey
In the first two sections of this paper we provide a brief account of the Cayley-Dickson algebras and prove that the radius on these algebras is given by the Euclidean norm. With t…