The James and von Neumann-Jordan type constants and uniform normal structure in Banach spaces
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نویسنده
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dinarvand mina
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منبع
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international journal of nonlinear analysis and applications - 2017 - دوره : 8 - شماره : 1 - صفحه:113 -122
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چکیده
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Recently, takahashi has introduced the james and von neumann-jordan type constants. in this paper, we present some sufficient conditions for uniform normal structure and therefore the fixed point property of a banach space in terms of the james and von neumann-jordan type constants and the ptolemy constant. our main results of the paper significantly generalize and improve many known results in the recent literature.
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کلیدواژه
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James type constant; von Neumann-Jordan type constant; Ptolemy constant; Fixed point property; Uniform normal structure
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آدرس
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k. n. toosi university of technology, faculty of mathematics, ایران
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پست الکترونیکی
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dinarvand_mina@yahoo.com
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