Complex Analysis through Examples and Exercises

The book Complex Analysis through Examples and Exercises has come out from the lectures and exercises that the author held mostly for mathematician and physists . The book is an attempt to present the rat her involved subject of complex analysis through a

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Kluwer Text in the Mathematical Sciences VOLUME21

A Graduate-Level Book Series

The titfes published in this series are listed at the end 0/ this vofume.

Complex Analysis through Examples and Exercises by

Endre Pap Institute of Mathematics, University of Novi Sad, Novi Sad, Yugoslavia

SPRINGER-SCIENCE+BUSINESS MEDIA, B.V.

A c.I.P. Catalogue record for this book is available from the Library of Congress.

ISBN 978-90-481-5253-7 ISBN 978-94-017-1106-7 (eBook) DOI 10.1007/978-94-017-1106-7

Printed an acid-free paper

AII Rights Reserved © 1999 Springer Science+Business Media Dordrecht Originally published by Kluwer Academic Publishers in 1999 N o part of the material protected by this copyright notice may be reproduced or utilized in any form or by any means, electronic or mechanical, inc1uding photocopying, recording or by any information storage and retrieval system, without written permission from the copyright owner.

Contents Contents

v

Preface 1

IX

The Complex Numbers

1

1.1

Algebraic Properties

1

1.1.1

Preliminaries

1

1.1.2

Examples and Exercises

2

1.2 The Topology of the Complex Plane

2

......

1.2.1

Preliminaries

1.2.2

Examples and Exercises

Sequences and series

2.1

Sequences

.....

32 33 37

37

2.1.1

Preliminaries

37

2.1.2

Examples and Exercises

38

2.2 Series . . . . . . . . .

3

32

44

2.2.1

Preliminaries

44

2.2.2

Examples and Exercises

45

Complex functions

53

3.1

General Properties

53

3.1.1

Preliminaries

53

3.1.2

Examples and Exercises

54

vi

CONTENTS

3.2 Special Functions ..

64

3.2.1

Preliminaries

64

3.2.2

Examples and Exercises

65

3.3 Multi-valued functions

4

4.2

5

Preliminaries

68

3.3.2

Examples and Exercises

68 73

.......

73

4.1.1

Preliminaries

73

4.1.2

Examples and Exercises

73

Basics

Special mappings

..

74

4.2.1

Preliminaries

74

4.2.2

Examples and Exercises

75

The Integral

5.1

6

3.3.1

Conformal mappings

4.1

68

Basics

103 • • •

0

103

••

5.1.1

Preliminaries

103

5.1.2

Examples and Exercises

104

The Analytic functions

129

6.1

129

The Power Series Representation

......

6.1.1

Preliminaries

6.1.2

Examples and Exercises

6.2 Composite Examples ...... 7 Isolated Singularities

7.1

129 131 162 171

Singularities . . . .

171

7.1.1

Preliminaries

171

7.1.2

Examples and Exercises

172

7.2 Laurent series .... 7.2.1

Preliminaries

177 177

CONTENTS

vii

7.2.2

Examples and Exercises . . . . . . . . . . . . . . . . . . . . . 179

Residues

191

8

8.1

8.2 9

Residue Theorem

· 191

8.1.1

Preliminaries

· 191

8.1.2

Examples and Exercises

· 193

Composite Examples . . . . . .

Analytic continuation

9.1

9.2

Continuation

...

.206 227

.227

9.1.1

Preliminaries

.227

9.1.2

Examples and Exercises

.228

Composite Examples . . . . . .

10 Integral transforms

10.1 Analytic Functions Defined by Integrals.

.233 255

.255

10.1.1 Preliminaries . . . . . .

.255

10.1.2 Examples and Exercises

.256

10.2 Composite Examples . . . . . .

.268

11 Miscellaneous Examples

313

Bibliogra