Remarks on Segal algebras

Let B be an abstract Segal algebra in some Banach algebra A. There was some belief that in the commutative case A should be semi-simple, if B is, but this is not so (Section I). It is well known that a (proper) abstract Segal algebra does not have bounded right approximate units. It may however have...

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Bibliographic Details
Main Author: Leinert, Michael (Author)
Format: Article (Journal)
Language:English
Published: 1975
In: Manuscripta mathematica
Year: 1975, Volume: 16, Issue: 1, Pages: 1-9
ISSN:1432-1785
DOI:10.1007/BF01169059
Online Access:Verlag, Volltext: http://dx.doi.org/10.1007/BF01169059
Verlag, Volltext: https://link.springer.com/article/10.1007/BF01169059
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Author Notes:Michael Leinert
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Summary:Let B be an abstract Segal algebra in some Banach algebra A. There was some belief that in the commutative case A should be semi-simple, if B is, but this is not so (Section I). It is well known that a (proper) abstract Segal algebra does not have bounded right approximate units. It may however have a left unit. Pseudosymmetric Segal algebras in the sense of Reiter do not have bounded left approximate units (Section II). A nonfactorization proof is given for a class of algebras which contains most of the known examples of Segal algebras on abelian groups (Section III).
Item Description:Gesehen am 04.06.2018
Physical Description:Online Resource
ISSN:1432-1785
DOI:10.1007/BF01169059