The Theory of Fractional Powers of Operators - 1st Edition - ISBN: 9780444887979, 9780080519074

The Theory of Fractional Powers of Operators, Volume 187

1st Edition

Authors: C. Martinez M. Sanz
eBook ISBN: 9780080519074
Imprint: North Holland
Published Date: 17th January 2001
Page Count: 378
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Table of Contents

Introduction. 1. Non-Negative Operators. 2. Differential Operators. 3. The Balakrishnan Operator. 4. An Extension of the Hirsch Functional Calculus. 5. Fractional Powers of Operators. 6. Domains, Uniqueness and the Cauchy Problem. 7. Negative and Imaginary Powers. 8. The Dore-Vennis Theorem. 9. Functional Calculus for Co-groups. 10. Imaginary Powers on Hilbert Spaces. 11. Fractional Powers and Interpolation Spaces. 12. Fractional Powers of some Differential Operators. Appendix. Notations. Bibliography.


Description

This book makes available to researchers and advanced graduates a simple and direct presentation of the fundamental aspects of the theory of fractional powers of non-negative operators, which have important links with partial differential equations and harmonic analysis. For the first time ever, a book deals with this subject monographically, despite the large number of papers written on it during the second half of the century. The first chapters are concerned with the construction of a basic theory of fractional powers and study the classic questions in that respect. A new and distinct feature is that the approach adopted has allowed the extension of this theory to locally convex spaces, thereby including certain differential operators, which appear naturally in distribution spaces. The bulk of the second part of the book is dedicated to powers with pure imaginary exponents, which have been the focus of research in recent years, ever since the publication in 1987 of the now classic paper by G.Dore and A.Venni. Special care has been taken to give versions of the results with more accurate hypotheses, particularly with respect to the density of the domain or the range of the operator. The authors have made a point of making the text clear and self-contained. Accordingly, an extensive appendix contains the material on real and functional analysis used and, at the end of each chapter there are detailed historical and bibliographical notes in order to understand the development and current state of research into the questions dealt with.


Details

No. of pages:
378
Language:
English
Copyright:
© North Holland 2000
Published:
Imprint:
North Holland
eBook ISBN:
9780080519074

Reviews

@qu:The book is well organized and written; arguments are clear, and proofs are given in full detail.....I think that this book is an excellent reference for the stabilized part of the theory and a stimulating introduction to the most recent ideas on the subject. @source:Mathematical Reviews


About the Authors

C. Martinez Author

Affiliations and Expertise

Departament de Matemàtica Aplicada, Universtat de València, C/Dr.Moliner, 50, 46100 burjassot, València, Spain

M. Sanz Author

Affiliations and Expertise

Departament de Matemàtica Aplicada, Universtat de València, C/Dr.Moliner, 50, 46100 burjassot, València, Spain