Modular Functions of One Variable VI Proceedings International Confe

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627 Modular Functions of One Variable VI Proceedings International Conference, University of Bonn, Sonderforschungsbereich Theoretische Mathematik July 2-14, 1976

Edited by J.­P. Serre and D. B. Zagier

Springer-Verlag Berlin Heidelberg NewYork 1977

Editors

Jean-Pierre Serre College de France 75231 Paris Cedex 05/France Don Bernard Zagier Mathematisches Institut der Universitat Bonn Wegelerstr.10 53 Bonn/BRD

AMS Subject Classifications (1970): lOC15, 10005, 10025, 12A99, 14H45, 14K22, 14K25 ISBN 3-540-08530-0 ISBN 0-387-08530-0

Springer-Verlag Berlin Heidelberg New York 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. 2140/3140-543210

PREFACE This is the second and final volume of proceedings for the Conference on Modular Forms held in Bonn in July 1976. The first volume appeared as Lecture Notes nO 601, under the title "Modular Functions of One Variable V" (cf. Lecture Notes nO 320, 349, 350 and 476).

Jean- Pierre Serre

Don Zagier

CONTENTS

M. RAZAR,

Values of Dirichlet series at integers in the

1

critical strip C. MORENO,

Analytic properties of Euler products of automorphic representations

11

J-P. SERRE, H.M. STARK,

Modular forms of weight

27

H. COHEN, J. OESTERLE,

Dimension des espaces de formes modulaires

69

M-F.. VIGNE'RAS"

Facteurs gamma et equations fonctionnelles

79

D. ZAGIER,

Modular forms whose Fourier coefficients

1/2

involve zeta-functions of quadratic fields D. ZAGIER,

Correction to "The Eichler-Selberg trace formula on

H. COHEN,

105 171

SL (;z ) II 2

A lifting of modular forms in one variable to Hilbert modular forms in two variables

175

M. EICHLER,

Theta functions over

197

M-F. VIGNERAS,

Series theta des formes quadratiques

and over

indefinies

227

S. GELBART,

Automorphic forms and Artin's conjecture

241

S. KUDLA,

Relations between automorphic forms produced by theta-functions

F. HIRZEBRUCH,

The ring of Hilbert modular forms for real quadratic fields of small discriminant

A.N. ANDRIANOV,

277

287

On zeta-functions of Rankin type associated with Siegel modular forms

List of adresses of authors

325 339

Raz-1

Values of Dirichlet Series at Integers in the Critical Strip by Michael J. Razar

§l. Introduction This note is primarily a summary of some recent work on the values at integer points in the critical strip of Dirichlet series associated to newforms on

(N).

The first such results seem to be due

to Shimura [9J, who derived them for the Dirichlet series a