A real seminorm with square property is submultiplicative
Résumé
It was proved that every seminorm with square property on a complex associative algebra is submultiplicative. This result was obtained by using the Hirschfeld-Zelazko theorem which is not valid in the real case. Using a functional representation theorem, we show that every seminorm with square property on a real associative algebra is submultiplicative.
Origine : Fichiers produits par l'(les) auteur(s)
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