Fréchet algebras generated by certain of their elements.
Ouzomgi, S., Redlin, L., Watson, S. (1995)
International Journal of Mathematics and Mathematical Sciences
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Ouzomgi, S., Redlin, L., Watson, S. (1995)
International Journal of Mathematics and Mathematical Sciences
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W. Żelazko (1987)
Studia Mathematica
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Hugo Peimbert, Wiesław Żelazko (1985)
Studia Mathematica
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W. Żelazko (1966)
Studia Mathematica
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A. V. Ferreira, G. Tomassini (1978)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Hadjigeorgiou, R.I. (1997)
Portugaliae Mathematica
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Kyriazis, Athanasios (1995)
Portugaliae Mathematica
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Anastasios Mallios (1970)
Studia Mathematica
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Takeshi Katsura, Paul S. Muhly, Aidan Sims, Mark Tomforde (2008)
Studia Mathematica
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Given an ultragraph in the sense of Tomforde, we construct a topological quiver in the sense of Muhly and Tomforde in such a way that the universal C*-algebras associated to the two objects coincide. We apply results of Muhly and Tomforde for topological quiver algebras and of Katsura for topological graph C*-algebras to study the K-theory and gauge-invariant ideal structure of ultragraph C*-algebras.
L. Lindeboom (Groenewald), H. Raubenheimer (1998)
Extracta Mathematicae
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We compare the singular spectrum of a Banach algebra element with the usual spectrum and exponential spectrum.
Jerzy Kąkol (1982)
Colloquium Mathematicae
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