ملخص
Using a diagonalization Theorem obtained when the spectrum is Lipshitzian, we extend a result of G. Braatvedt on scalar characterization in Banach algebras to Banach-Jordan algebras. We also establish that any element of a semisimple Banach-Jordan algebra with the property that all elements in som neighbourhood of the identity are spectrally invariant under multiplication by the quadratic U operator, has analog with identity.
اللغة الأصلية | English |
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الصفحات (من إلى) | 121-124 |
عدد الصفحات | 4 |
دورية | Universal Journal of Mathematics and Applications |
حالة النشر | Published - 2018 |