Comparisons between different spectra of an element in a Banach algebra

Laura Burlando

International Journal of Mathematics and Mathematical Sciences, 1993, vol. 16, 1-4

Abstract:

In this paper we study the relationships among the spectra of the cosets of an element of a Banach algebra in some quotient algebras. We also characterize the spectrum of any a ∈ M (where M is an ideal of a Banach algebra with identity and moreover has an identity) in the whole algebra in terms of the spectrum of a in M .

Date: 1993
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:163476

DOI: 10.1155/S0161171293001036

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