Analytic Theory of Continued Fractions II Proceedings of a Seminar-W

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1199 Analytic Theory of Continued Fractions II Proceedings of a Seminar-Workshop held in Pitlochry and Aviemore, Scotland June 13-29, 1985

Edited by W.J. Thron

Spri nger-Verlag Berlin Heidelberg New York London Paris Tokyo

Editor

Wolfgang J. Thron Department of Mathematics, University of Colorado, Boulder Campus Box 426, Boulder, Colorado 80309, USA

Mathematics Subject Classification (1980): 30B70, 33A40, 65D99 ISBN 3-540-16768-4 Springer-Verlag Berlin Heidelberg New York ISBN 0-387-16768-4 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 "Verwertungsgesellschaft Wort", Munich.

© Springer-Verlag Berlin Heidelberg 1986 Printed in Germany Printing and binding: Beltz Offsetdruck, Hemsbach/Bergstr. 2146/3140-543210

PREFACE The success of the workshop held in Loen, Norway in the summer of 1981

(see Springer Lecture Notes in Mathematics No. 932) encouraged us

to arrange a second workshop in Pitlochry and Aviemore, Scotland in the summer of 1985. Waadeland.

Most of the organizational work was done by Haakon

Local arrangements were in the hands of John McCabe.

There were both continuity and progress in the topics treated at the two conferences. two subareas.

In these proceedings most contributions fall into

They are:

convergence theory of continued fractions and

continued fraction methods in the solution of strong moment problems. Under the first topic limit periodic continued fractions with or

receive most attention.

important role.

an

+

-1/4

Modified convergence also plays an

In the proofs element regions and value (limit) regions

are frequently used.

Many of the element regions are Cartesian ovals.

Truncation error estimates are obtained whenever feasible.

In the

second subarea Stieltjes, Hamburger and trigonometric moment problems are studied and various types of continued fractions, these problems, are investigated. to power series both at

0

useful in solving

These continued fractions correspond

and at

The two-point Pade tables, known

as M-tables are analyzed for some of these continued fractions.

Szego

polynomials coming up in connection with trigonometric moment problems are orthogonal on the unit circle.

In addition there are contributions

dealing with the location of the zeros of polynomials and multi-point Pade tables and applications to special functions.

Applicability of

results is emphasized in almost all articles. There is one survey article in this volume (pp. 127 - 158). other papers contain original research.

All

All contributions were refereed

and we appreciate the efforts of those who helped with this task. Grateful acknowledgement is made for the financial support of the Seminar