Supersets for the spectrum of elements in extended Banach algebras

Morteza Seddighin

International Journal of Mathematics and Mathematical Sciences, 1989, vol. 12, 1-2

Abstract:

If A is a Banach Algebra with or without an identity, A can be always extended to a Banach algebra A ¯ with identity, where A ¯ is simply the direct sum of A and C, the algebra of complex numbers. In this note we find supersets for the spectrum of elements of A ¯ .

Date: 1989
References: Add references at CitEc
Citations:

Downloads: (external link)
http://downloads.hindawi.com/journals/IJMMS/12/272695.pdf (application/pdf)
http://downloads.hindawi.com/journals/IJMMS/12/272695.xml (text/xml)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:272695

DOI: 10.1155/S016117128900102X

Access Statistics for this article

More articles in International Journal of Mathematics and Mathematical Sciences from Hindawi
Bibliographic data for series maintained by Mohamed Abdelhakeem ().