A pythagorean approach in Banach spaces

By Ji Gao. 2006

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Let be a Banach space and let be the unit sphere of. Parameters,,, and, where and are introduced and studied. The values of these parameters in the spaces and function spaces are estimated. Among the other results, we proved that a Banach space with, or is uniform nonsquare; and a Banach space with, or has uniform normal structure.

Subfields: Computational Theory and Mathematics, Geometry and Topology, Numerical Analysis

View Paper: https://www.semanticscholar.org/paper/7c8636e7ae7cc659985aa1cc7269cb9d53119236

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