Let E be a real normed space and A a complex Banach algebra with unit. We characterize the continuous solutions f : E -> A of the functional equation f (x + y) = lim(n ->infinity)(f (x/n) f (y/n))(n).
机构:
Univ Milano Bicocca, Dipartimento Matemat & Applicaz, I-20125 Milan, ItalyUniv Milano Bicocca, Dipartimento Matemat & Applicaz, I-20125 Milan, Italy
Canzi, Claudia
Guerra, Graziano
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机构:
Univ Milano Bicocca, Dipartimento Matemat & Applicaz, I-20125 Milan, ItalyUniv Milano Bicocca, Dipartimento Matemat & Applicaz, I-20125 Milan, Italy