On the best values of the constants in the theorem of M. Riesz, Zygmund and Kolmogorov
S. Pichorides (1972)
Studia Mathematica
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Displaying similar documents to “A new class of composition operators.”
On the best values of the constants in the theorem of M. Riesz, Zygmund and Kolmogorov
An example in the theory of singular integrals
Mary Weiss, A. Zygmund (1965)
Studia Mathematica
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The summability by logarithmic means of the ultra-spherical series.
B. C. Singhai (1962)
Bollettino dell'Unione Matematica Italiana
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A quasinilpotent operator with reflexive commutant
M. Zając (1996)
Studia Mathematica
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An example of a nonzero quasinilpotent operator with reflexive commutant is presented.
The integral means spectrum for lacunary series.
Kayumov, I.R. (2001)
Annales Academiae Scientiarum Fennicae. Mathematica
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On further strengthened Hardy-Hilbert's inequality.
Lü, Zhongxue (2004)
International Journal of Mathematics and Mathematical Sciences
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Logaritmos y potencias imaginarias de operadores sobre espacios de Hilbert.
Khristo N. Boyadzhiev (1994)
Collectanea Mathematica
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The range of a random function defined in the unit disk
A. Offord (1972)
Studia Mathematica
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A nonlocal singular perturbation problem with periodic well potential
Matthias Kurzke (2006)
ESAIM: Control, Optimisation and Calculus of Variations
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For a one-dimensional nonlocal nonconvex singular perturbation problem with a noncoercive periodic well potential, we prove a -convergence theorem and show compactness up to translation in all and the optimal Orlicz space for sequences of bounded energy. This generalizes work of Alberti, Bouchitté and Seppecher (1994) for the coercive two-well case. The theorem has applications to a certain thin-film limit of the micromagnetic energy.
A divergent multiple Fourier series of power series type
J. Ash, Lawrence Gluck (1972)
Studia Mathematica
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