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ASYMPTOTICALLY ISOMETRIC COPIES OF lp (1≤ p<∞) AND c0 IN BANACH SPACES

  • Chen Dongyang
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  • Department of Mathematics, Xiamen University, Xiamen 361005, China

Received date: 2003-11-04

  Revised date: 1900-01-01

  Online published: 2006-04-20

Abstract

Let X be a Banach space. If there exists a quotient space of X which is asymptotically isometric to l1, then X contains complemented asymptotically isometric copies of l1. Every infinite dimensional closed subspace of l1 contains a complemented subspace of l1 which is asymptotically isometric
to l1. Let X be a separable Banach space such that X* contains asymptotically isometric copies of lp (1q (\frac{1}{p}+\frac{1}{q}=1). Complemented asymptotically isometric copies of c0 in K(X,Y) and W(X,Y) are discussed. Let X be a Gelfand-Phillips space. If X contains asymptotically isometric copies of c0, it has to contain complemented asymptotically isometric copies of c0.

Cite this article

Chen Dongyang . ASYMPTOTICALLY ISOMETRIC COPIES OF lp (1≤ p<∞) AND c0 IN BANACH SPACES[J]. Acta mathematica scientia, Series B, 2006 , 26(2) : 281 -290 . DOI: 10.1016/S0252-9602(06)60050-7

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