Complex Surfaces and Connected Sums of Complex Projective Planes

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603 Boris Moishezon

Complex Surfaces and Connected Sums of Complex Projective Planes

Springer-Verlag Berlin Heidelberg NewYork 19.77

Author Boris Moishezon Mathematics Department TeI-Aviv University TeI-Aviv/Israel

Library of Congress Cataloging in Publication Data

Moishczon, Boris, 1937Complex sumfaces and connected sums of complex projective planes. (Lecture notes in mathematics ; 603) Bibliography: p. Includes index. I. Surfaces, Algebraic. 2. Projective planes. 3. Manifolds (Mathematics) I. Title. If. Series: Lecture notes in mathematics (Berlin) ; 603. QA3.L28 no. 603 ~QA571~ 510'.8s r516'.352~ 77-22/36

AMS Subject Classifications (1970): 14J 99, 32J15, 57A15, 57 D55 ISBN 3-540-08355-3 Springer-Verlag Berlin Heidelberg New York ISBN 0-38?-08355-3 Springer-Verlag New York Heidelberg Berlin This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. Under § 54 of the German Copyright Law where copies are made for other than private use, a fee is payable to the publisher, the amount of the fee to be determined by agreement with the publisher. © by Springer-Verlag Berlin Heidelberg 1977 Printed in Germany Printing and binding: Beltz Offsetdruck, Hemsbach/Bergstr. 2141/3140-543210

TABLE

OF C O N T E N T S

Page

Introduction

1

Part I.

6

Topology of simply-connected algebraic surfaces of given degree n

§i.

A topological comparison theorem for fibers of holomorphic functions on complex threefolds

~2.

A topological comparison theorem for elements of linear systems on complex threefolds

35

§3.

Comparison of topology of simply-connected projective surfaces of degree n and non-singular hypersurfaces of degree n in ~pg.

60

§4.

Simply-connected algebraic surfaces of general type

66

§5.

Topological normalization of simply-connected algebraic surfaces

69

Appendix I.

Generic projections of algebraic surfaces into ~p3

6

72

§i.

A theorem of F. Severi

82.

Duality Theorem and Corollaries of it

82

§3.

Proof of Theorem 3 (§3, Part I)

99

§i.

Deformations of elliptic surfaces with~'non-stable '' singular fibers

116

§2.

Lefshetz

162

Part If.

Elliptic Surfaces

fibrations of 2-toruses

72

116

Kodaira fibrations of 2-toruses

196

Topology of simply-connected elliptic surfaces

222

Appendix If.

R. Livne.

A Theorem about the modular group

223

Bibliography

231

Subject Index

23~

Introduction In [i] Wall proved the following theorem: If VI,V 2 are simply-connected h-cobordant such that

compact 4-manifolds,

which are

to each other, then there exists an integer k ~ O V 1 / k(S2×S 2) is diffeomorphic

(/ is the connected

to V 2 ~ k(S2×S 2)

sum operation).

It follows almost immediately is a simply-connected

from this result that if V

compact 4-manifold,

integer k ~ O such that V ~ (k+l)P ~ k Q

then there exists an

is diffeomorphic

to

LP ~ mQ for some ~,