A class of spaces lacking normal structure
W. L. Bynum (1972)
Compositio Mathematica
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W. L. Bynum (1972)
Compositio Mathematica
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Denka Kutzarova (1989)
Acta Universitatis Carolinae. Mathematica et Physica
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Ji Gao, Ka-Sing Lau (1991)
Studia Mathematica
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Miroslav Pavlović (1993)
Matematički Vesnik
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S. Rolewicz (1987)
Studia Mathematica
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Wang, Fenghui (2007)
Journal of Inequalities and Applications [electronic only]
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M. Ivanov, A. J. Pallares, S. Troyanski (2010)
Studia Mathematica
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We use one-dimensional differential inequalities to estimate the squareness and type of Banach spaces with modulus of convexity of power type two. The estimates obtained are sharp and the constants involved moderate.
J. Ayerbe, T. Domínguez Benavides, S. Cutillas (1997)
Colloquium Mathematicae
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We define a modulus for the property (β) of Rolewicz and study some useful properties in fixed point theory for nonexpansive mappings. Moreover, we calculate this modulus in spaces for the main measures of noncompactness.