Countably modulared spaces
J. Albrycht, J. Musielak (1968)
Studia Mathematica
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J. Albrycht, J. Musielak (1968)
Studia Mathematica
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A. G. Aksoy, J.-B. Baillon (1993)
Collectanea Mathematica
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In this paper we show that the ball-measure of non-compactness of a norm bounded subset of an Orlicz modular space L-Psi is equal to the limit of its n-widths. We also obtain several inequalities between the measures of non-compactness and the limit of the n-widths for modular bounded subsets of L-Psi which do not have Delta-2-condition. Minimum conditions on Psi to have such results are specified and an example of such a function Psi is provided.
W. Orlicz (1963)
Studia Mathematica
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Aleksander Waszak (1990)
Publicacions Matemàtiques
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Let X denote the space of all real, bounded double sequences, and let Φ, φ, Γ be φ-functions. Moreover, let Ψ be an increasing, continuous function for u ≥ 0 such that Ψ(0) = 0. In this paper we consider some spaces of double sequences provided with two-modular structure given by generalized variations and the translation operator (...).
Musielak, Julian
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Werner Fischer, Ulrich Schöler (1976)
Studia Mathematica
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K. Sundaresan (1971)
Studia Mathematica
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