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A class of spaces with weak normal structure

Published online by Cambridge University Press:  17 April 2009

Brailey Sims
Brailey Sims
Affiliation:
Department of MathematicsThe University of NewcastleNewcastle NSW 2308Australia
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It has recently been shown that a Banach space enjoys the weak fixed point property if it is ε0-inquadrate for some ε0 < 2 and has WORTH; that is, if then, ║xn — x║ — ║xn + x║ → 0, for all x. We establish the stronger conclusion of weak normal structure under the substantially weaker assumption that the space has WORTH and is ‘ε0-inquadrate in every direction’ for some ε0 < 2.

Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 49 , Issue 3 , June 1994 , pp. 523 - 528
Copyright
Copyright © Australian Mathematical Society 1994

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