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A note on asymptotically isometric copies of
Authors:Hermann Pfitzner
Affiliation:Université d'Orléans, BP 6759, F-45067 Orléans Cedex 2, France
Abstract:

Nonreflexive Banach spaces that are complemented in their bidual by an L-projection--like preduals of von Neumann algebras or the Hardy space $H^1$--contain, roughly speaking, many copies of $l^1$ which are very close to isometric copies. Such $l^1$-copies are known to fail the fixed point property. Similar dual results hold for $c_0$.

Keywords:Asymptotically isometric copies of $l_1$   James' distortion   L-summands   L-embedded   M-ideals   fixed point property
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