Functional Analysis Proceedings of the Seminar at the University of

The papers in this volume yield a variety of powerful tools for penetrating the structure of Banach spaces, including the following topics: the structure of Baire-class one functions with Banach space applications, operator extension problems, the structu

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1470

Lecture Notes in Mathematics Editors: A. Dold, Heidelberg B. Eckmann, Zurich F. Takens, Groningen

1470

E. Odell

H. Rosenthal (Eds.)

Functional Analysis Proceedings of the Seminar at the University of Texas at Austin 1987-89

Springer-Verlag Berlin Heidelberg New York London Paris Tokyo Hong Kong Barcelona Budapest

Editors Edward E. Odwell, jr. Haskell P. Rosenthal Department of Mathematics The University of Texas at Austin Austin, TX 78712, USA

Mathematics Subject Classification (1980): Primary: 46B20, 46A55 Secondary: 42A61, 43A99, 46H99, 47D99, 54F60

ISBN 3-540-54206-X Springer-Verlag Berlin Heidelberg New York ISBN 0-387-54206-X Springer-Verlag New York Berlin Heidelberg This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in other ways, and storage in data banks. Duplication of this publication or parts thereof is only permitted under the provisions of the German Copyright Law of September 9,1965, in its current version, and a copyright fee must always be paid. Violations fall under the prosecution act of the German Copyright Law. © Springer-Verlag Berlin Heidelberg 1991 Printed in Germany Printing and binding: Druckhaus Beltz, Hemsbach/Bergstr. 2146/3140-543210 - Printed on acid-free paper

Longhorn Notes

Preface

This is the sixth annual proceedings of our Functional Analysis Seminar at The University of Texas, and the second one to be published in the Springer-Verlag Lecture Notes. All the articles that appear are based on talks given in the seminar during the years 1987-89. We thank the participants for their effort in communicating mathematical ideas in both spoken and written form. We again wish to express our deep appreciation to Margaret Combs for her expert craftsmanship and considerable patience in typesetting this issue. Thanks are also due to The University of Texas for supporting the publication of the Longhorn Notes. Ted Odell Haskell Rosenthal August 1990

TABLE OF CONTENTS

Page 1. On certain classes of Baire-I functions with applications to Banach space theory by R. Haydon, E. Odell and H. Rosenthal

1

2. Normed spaces with a weak-Gordon-Lewis property by K. Ball

36

3. On the geometry of the Banach-Mazur compactum by S.J. Szarek

48

4. Some remarks about the space of measures with uniformly bounded partial sums and Banach-Mazur distances between some spaces of polynomials by P. Wojtaszczyk

60

5. Operators which factor through Banach lattices not containing Co by N. Ghoussoub and W.B. Johnson

68

6. Remarks on Talagrand's deviation inequality for Rademacher functions by W.B. Johnson and G. Schechtman

72

7. A Global Approach to Certain Operator Extension Problems by M. Zippin

78

8. Weakly null sequences with upper t'p-estimates by H. Knaust and E. Odell

85

9. On tensor products of operators from LP to Lq by H.P. Rosenthal and S.J. Szarek

108

10. Limited Sets in Injective