On quasi-algebraic elements of Banach algebra (Q802113)

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scientific article; zbMATH DE number 3881308
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On quasi-algebraic elements of Banach algebra
scientific article; zbMATH DE number 3881308

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    On quasi-algebraic elements of Banach algebra (English)
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    1984
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    It is shown that the set of all quasi-algebraic elements of a complex Banach algebra with unit is closed under taking sums if and only if it is closed under taking products.
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    quasi-algebraic elements of Banach algebra
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