"Almost isometric ideals and non-separable Gurariy spaces" by Pradipta Bandyopadhyay, S. Dutta et al.
 

Almost isometric ideals and non-separable Gurariy spaces

Article Type

Research Article

Publication Title

Journal of Mathematical Analysis and Applications

Abstract

The main result of this short note is that a (non-separable) Banach space is a Gurariy space if and only if every separable almost isometric ideal in X is isometric to the separable Gurariy space G. We also obtain a similar characterization of L1-predual spaces in terms of ideals. Along the way, we show that the family of ideals/almost isometric ideals in a Banach space is closed under increasing limits. And hence, the family of all separable ideals/almost isometric ideals in a Banach space is a skeleton.

First Page

279

Last Page

284

DOI

10.1016/j.jmaa.2018.02.013

Publication Date

6-1-2018

Comments

All Open Access, Bronze

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