Department of Basic Technology, Faculty of Engineering, Yamagata University, Yonezawa 992-8510, Japan
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Abstract
Let B be a strictly real commutative real Banach algebra with
the carrier space ΦB. If A is a commutative real Banach
algebra, then we give a representation of a ring homomorphism
ρ:A→B, which needs not be linear nor
continuous. If A is a commutative complex Banach algebra, then
ρ(A) is contained in the radical of B.