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to Classical Complex Analysis Vol. 1 by Robert B. Burckel Kansas State University 1979 BIRKHAUSER VERLAG BASEL UND STUTTGART CIP-Kurztitelaufnahme der Deutschen Bibliothek Burckel, Robert B.: An introduction to classical complex analysis I by Robert B. Burckel. - Basel. Stuttgart: Birkhiiuser. Vol. I. - 1979. (Lehrbilcher und Monographien aus dem Gebiete der exakten Wissenschaften: Math. Reihe; Bd. 64) All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the Copyright owner. (c) Birkhiiuser Verlag Basel, 1979 North and South America Edition published by ACADEMIC PRESS. INC. III Fifth Avenue, New York, New York 10003 (Pure and Applied Mathematics, A Series of Monographs and Textbooks, Volume 82) ISBN-13: 978-3-0348-9376-3 e-ISBN-13: 978-3-0348-9374-9 DOl: 10.1007/978-3-0348-9374-9 Library of Congress Catalog Card Number 78-67403 5 Contents Volume I PREFACE 9 Chapter 0 PREREQUISITES AND PRELIMINARIES 13 § 1 Set Theory 13 § 2 Algebra 14 § 3 The Battlefield 14 § 4 Metric Spaces 15 § 5 Limsup and All That 18 § 6 Continuous Functions 20 § 7 Calculus 21 Chapter I CURVES, CONNECTEDNESS AND CONVEXITY 22 § 1 Elementary Results on Connectedness 22 § 2 Connectedness of Intervals, Curves and Convex Sets 23 § 3 The Basic Connectedness Lemma 28 § 4 Components and Compact Exhaustions 29 § 5 Connectivity of a Set 33 § 6 Extension Theorems 37 Notes to Chapter I 39