This book presents complex analysis in one variable in the context of modern mathematics, with clear connections to several complex variables, de Rham theory, real analysis, and other branches of mathematics. Thus, covering spaces are used explicitly in dealing with Cauchy's theorem, real variable methods are illustrated in the Loman-Menchoff theorem and in the corona theorem, and the algebraic structure of the ring of holomorphic functions is studied.
Using the unique position of complex analysis, a field drawing on many disciplines, the book also illustrates powerful mathematical ideas and tools, and requires minimal background material. Cohomological methods are introduced, both in connection with the existence of primitives and in the study of meromorphic functionas on a compact Riemann surface. The proof of Picard's theorem given here illustrates the strong restrictions on holomorphic mappings imposed by curvature conditions.

The original edition of this book has been out of print for some years. The appear ance of the present second edition owes much to the initiative of Yves Nievergelt at Eastern Washington University, and the support of Ann Kostant, Mathematics Editor at Birkhauser. Since the book was first published, several people have remarked on the absence of exercises and expressed the opinion that the book would have been more useful had exercises been included. In 1997, Yves Nievergelt informed me that, for a decade, he had regularly taught a course at Eastern Washington based on the book, and that he had systematically compiled exercises for his course. He kindly put his work at my disposal. Thus, the present edition appears in two parts. The first is essentially just a reprint of the original edition. I have corrected the misprints of which I have become aware (including those pointed out to me by others), and have made a small number of other minor changes.

Bernhard Riemanns Werk hat bis heute wesentlichen Einfluss auf die Entwicklung der Mathematik genommen. Seine Ideen sind uberraschend modern und pragen die heutige mathematische Forschung. Die Gesammelten Abhandlungen (1892) samt Supplement von 1902 waren seit langer Zeit vergriffen. R. Narasimhan hat die muhevolle Edition dieser Neuausgabe ubernommen. Es koennen nur einige Hoehepunkte genannt werden: - H. Weils Kommentare uber Riemanns Habilitationsschrift - C.L. Siegel uber Riemanns Nachlass zur analytischen Zahlentheorie - W. Wirtingers beruhmter Vortrag beim internationalen Mathematikerkongress Heidelberg 1904 uber Riemanns Vorlesungen uber die hypergeometrische Reihe. Neben diesen historischen Wurdigungen von Riemanns Werk gibt es aktuelle Beitrage, insbesondere zur Mechanik und uber "shock waves" von S. Chandrasekhar, N. Lebovitz und P. Lax. Raghavan Narasimhan gibt in einer ausfuhrlichen Einleitung eine Wurdigung, insbesondere des funktionentheoretischen Werks von Bernhard Riemann. Ferner sind Fotos und zahlreiche Nachtrage zum Lebenslauf aufgenommen worden. Eine Bibliographie mit mehr als 800 Literaturstellen erarbeitet von E. Neuenschwander und W. Purkert rundet diese Werkausgabe ab.

Drawn from lectures given by Raghavan Narasimhan at the University of Geneva and the University of Chicago, this book presents the part of the theory of several complex variables pertaining to unramified domains over C . Topics discussed are Hartogs' theory, domains in holomorphy, and automorphism of bounded domains.