A convolution inequality concerning Cantor-Lebesgue measures.
Michael Christ (1985)
Revista Matemática Iberoamericana
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Michael Christ (1985)
Revista Matemática Iberoamericana
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Krzysztof Stempak (1985)
Colloquium Mathematicae
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Anna Kula (2010)
Banach Center Publications
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Two important examples of q-deformed commutativity relations are: aa* - qa*a = 1, studied in particular by M. Bożejko and R. Speicher, and ab = qba, studied by T. H. Koornwinder and S. Majid. The second case includes the q-normality of operators, defined by S. Ôta (aa* = qa*a). These two frameworks give rise to different convolutions. In particular, in the second scheme, G. Carnovale and T. H. Koornwinder studied their q-convolution. In the present paper we consider another convolution...
Horst Osswald (1991)
Mathematica Scandinavica
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Massoud Amini (2007)
Bollettino dell'Unione Matematica Italiana
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We show that an unbounded measure on a strong commutative hypergroup is transformable if and only if its convolution with any positive definite function of compact support is positive definite.
J. Kucharczak (1988)
Colloquium Mathematicae
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Louis Pigno (1971)
Mathematische Zeitschrift
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Jan Rataj (1987)
Časopis pro pěstování matematiky
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T. Godoy, E. Ferreya, U. Urciuolo (1997)
The journal of Fourier analysis and applications [[Elektronische Ressource]]
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Kenny Koffi Siggini (2009)
Colloquium Mathematicae
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We prove criteria for relative compactness in the space of set-valued measures whose values are compact convex sets in a Banach space, and we generalize to set-valued measures the famous theorem of Dieudonné on convergence of real non-negative regular measures.
S. Hartman (1987)
Colloquium Mathematicae
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S. Hartman (1989)
Colloquium Mathematicae
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Louis Pigno (1973)
Compositio Mathematica
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Kjeld Laursen, Michael Neumann (1992)
Studia Mathematica
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For a multiplier on a semisimple commutative Banach algebra, the decomposability in the sense of Foiaş will be related to certain continuity properties and growth conditions of its Gelfand transform on the spectrum of the multiplier algebra. If the multiplier algebra is regular, then all multipliers will be seen to be decomposable. In general, an important tool will be the hull-kernel topology on the spectrum of the typically nonregular multiplier algebra. Our investigation involves...