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Author : Jay Kay Amburgey
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cesaro Summability of Fourier Series in LP-spaces written by Jay Kay Amburgey and published by . This book was released on 1965 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ferenc Weisz
Publisher : Springer Nature
ISBN 13 : 3030746364
Total Pages : 299 pages
Book Rating : 4.0/5 (37 download)
Download or read book Lebesgue Points and Summability of Higher Dimensional Fourier Series written by Ferenc Weisz and published by Springer Nature. This book was released on 2021-06-12 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph presents the summability of higher dimensional Fourier series, and generalizes the concept of Lebesgue points. Focusing on Fejér and Cesàro summability, as well as theta-summation, readers will become more familiar with a wide variety of summability methods. Within the theory of higher dimensional summability of Fourier series, the book also provides a much-needed simple proof of Lebesgue’s theorem, filling a gap in the literature. Recent results and real-world applications are highlighted as well, making this a timely resource. The book is structured into four chapters, prioritizing clarity throughout. Chapter One covers basic results from the one-dimensional Fourier series, and offers a clear proof of the Lebesgue theorem. In Chapter Two, convergence and boundedness results for the lq-summability are presented. The restricted and unrestricted rectangular summability are provided in Chapter Three, as well as the sufficient and necessary condition for the norm convergence of the rectangular theta-means. Chapter Four then introduces six types of Lebesgue points for higher dimensional functions. Lebesgue Points and Summability of Higher Dimensional Fourier Series will appeal to researchers working in mathematical analysis, particularly those interested in Fourier and harmonic analysis. Researchers in applied fields will also find this useful.
Author : Ferenc Weisz
Publisher : Springer Science & Business Media
ISBN 13 : 9401731837
Total Pages : 340 pages
Book Rating : 4.4/5 (17 download)
Download or read book Summability of Multi-Dimensional Fourier Series and Hardy Spaces written by Ferenc Weisz and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of martingale theory goes back to the early fifties when Doob [57] pointed out the connection between martingales and analytic functions. On the basis of Burkholder's scientific achievements the mar tingale theory can perfectly well be applied in complex analysis and in the theory of classical Hardy spaces. This connection is the main point of Durrett's book [60]. The martingale theory can also be well applied in stochastics and mathematical finance. The theories of the one-parameter martingale and the classical Hardy spaces are discussed exhaustively in the literature (see Garsia [83], Neveu [138], Dellacherie and Meyer [54, 55], Long [124], Weisz [216] and Duren [59], Stein [193, 194], Stein and Weiss [192], Lu [125], Uchiyama [205]). The theory of more-parameter martingales and martingale Hardy spaces is investigated in Imkeller [107] and Weisz [216]. This is the first mono graph which considers the theory of more-parameter classical Hardy spaces. The methods of proofs for one and several parameters are en tirely different; in most cases the theorems stated for several parameters are much more difficult to verify. The so-called atomic decomposition method that can be applied both in the one-and more-parameter cases, was considered for martingales by the author in [216].
Author : Ferenc Weisz
Publisher : Birkhäuser
ISBN 13 : 3319568140
Total Pages : 446 pages
Book Rating : 4.3/5 (195 download)
Download or read book Convergence and Summability of Fourier Transforms and Hardy Spaces written by Ferenc Weisz and published by Birkhäuser. This book was released on 2017-12-27 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the convergence and summability of both one-dimensional and multi-dimensional Fourier transforms, as well as the theory of Hardy spaces. To do so, it studies a general summability method known as theta-summation, which encompasses all the well-known summability methods, such as the Fejér, Riesz, Weierstrass, Abel, Picard, Bessel and Rogosinski summations. Following on the classic books by Bary (1964) and Zygmund (1968), this is the first book that considers strong summability introduced by current methodology. A further unique aspect is that the Lebesgue points are also studied in the theory of multi-dimensional summability. In addition to classical results, results from the past 20-30 years – normally only found in scattered research papers – are also gathered and discussed, offering readers a convenient “one-stop” source to support their work. As such, the book will be useful for researchers, graduate and postgraduate students alike.
Author : Lars-Erik Persson
Publisher : Springer Nature
ISBN 13 : 3031144597
Total Pages : 633 pages
Book Rating : 4.0/5 (311 download)
Download or read book Martingale Hardy Spaces and Summability of One-Dimensional Vilenkin-Fourier Series written by Lars-Erik Persson and published by Springer Nature. This book was released on 2022-11-22 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses, develops and applies the theory of Vilenkin-Fourier series connected to modern harmonic analysis. The classical theory of Fourier series deals with decomposition of a function into sinusoidal waves. Unlike these continuous waves the Vilenkin (Walsh) functions are rectangular waves. Such waves have already been used frequently in the theory of signal transmission, multiplexing, filtering, image enhancement, code theory, digital signal processing and pattern recognition. The development of the theory of Vilenkin-Fourier series has been strongly influenced by the classical theory of trigonometric series. Because of this it is inevitable to compare results of Vilenkin-Fourier series to those on trigonometric series. There are many similarities between these theories, but there exist differences also. Much of these can be explained by modern abstract harmonic analysis, which studies orthonormal systems from the point of view of the structure of a topological group. The first part of the book can be used as an introduction to the subject, and the following chapters summarize the most recent research in this fascinating area and can be read independently. Each chapter concludes with historical remarks and open questions. The book will appeal to researchers working in Fourier and more broad harmonic analysis and will inspire them for their own and their students' research. Moreover, researchers in applied fields will appreciate it as a sourcebook far beyond the traditional mathematical domains.
Author : G. D. Dikshit
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (713 download)
Download or read book On the Absolute Cesàro Summability of Some Series Associated with Fourier Series written by G. D. Dikshit and published by . This book was released on 1981 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Trebels
Publisher : Springer
ISBN 13 : 3540469516
Total Pages : 110 pages
Book Rating : 4.5/5 (44 download)
Download or read book Multipliers for (C,alpha)-Bounded Fourier Expansions in Banach Spaces and Approximation Theory written by W. Trebels and published by Springer. This book was released on 2006-11-15 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. Nanda
Publisher : Alpha Science Int'l Ltd.
ISBN 13 : 9788173196027
Total Pages : 234 pages
Book Rating : 4.1/5 (96 download)
Download or read book Sequences, Summability and Fourier Analysis written by S. Nanda and published by Alpha Science Int'l Ltd.. This book was released on 2005 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sequences, Summability and Fourier Analysis deals with various aspects of summability, a major branch of analysis. The subject grew extensively during the twentieth century through the contribution of eminent analysts, but there are numerous unsolved problems, which still baffle the present-day scholars, as the application side has been poorly attended to. This volume contains original research articles, many valuable survey articles on approximation theory, multivalent functions, almost convergence and absolute almost convergence, Tauberian theorems, Köthe-Toeplitz duals of sequence spaces, random Fourier series, stochastic integrals, interpolative subspaces of Banach space, metric transformations in sequence spaces, absolute summability and Nörlund summability.
Author : L. S. Bosanquet
Publisher :
ISBN 13 :
Total Pages : 289 pages
Book Rating : 4.:/5 (116 download)
Download or read book A Solution of the Cesàro Summability Problem for Successively Derived Fourier Series written by L. S. Bosanquet and published by . This book was released on 1940 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Zhizhiashvili
Publisher : Springer Science & Business Media
ISBN 13 : 9400902832
Total Pages : 314 pages
Book Rating : 4.4/5 (9 download)
Download or read book Trigonometric Fourier Series and Their Conjugates written by L. Zhizhiashvili and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in the theory of trigonometric series has been carried out for over two centuries. The results obtained have greatly influenced various fields of mathematics, mechanics, and physics. Nowadays, the theory of simple trigonometric series has been developed fully enough (we will only mention the monographs by Zygmund [15, 16] and Bari [2]). The achievements in the theory of multiple trigonometric series look rather modest as compared to those in the one-dimensional case though multiple trigonometric series seem to be a natural, interesting and promising object of investigation. We should say, however, that the past few decades have seen a more intensive development of the theory in this field. To form an idea about the theory of multiple trigonometric series, the reader can refer to the surveys by Shapiro [1], Zhizhiashvili [16], [46], Golubov [1], D'yachenko [3]. As to monographs on this topic, only that ofYanushauskas [1] is known to me. This book covers several aspects of the theory of multiple trigonometric Fourier series: the existence and properties of the conjugates and Hilbert transforms of integrable functions; convergence (pointwise and in the LP-norm, p > 0) of Fourier series and their conjugates, as well as their summability by the Cesaro (C,a), a> -1, and Abel-Poisson methods; approximating properties of Cesaro means of Fourier series and their conjugates.
Author : Robert E. Edwards
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.:/5 (321 download)
Download or read book Fourier Series, a Modern Introduction written by Robert E. Edwards and published by . This book was released on 1979 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles J. Mozzochi
Publisher : Springer
ISBN 13 : 3540366563
Total Pages : 94 pages
Book Rating : 4.5/5 (43 download)
Download or read book On the Pointwise Convergence of Fourier Series written by Charles J. Mozzochi and published by Springer. This book was released on 2006-11-15 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Sparks Rees
Publisher : CRC Press
ISBN 13 : 9780824769031
Total Pages : 432 pages
Book Rating : 4.7/5 (69 download)
Download or read book Theory and Applications of Fourier Analysis written by Charles Sparks Rees and published by CRC Press. This book was released on 1981-01-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trignometric sums; Integrability of trigonometric sums; Convergence and cesaro summability of fourier series; Convergence and summability of trigonetric series; Multiple fourier series; Fourier transform and applications; Orthogonal systems; Bessel functions.
Author :
Publisher : Academic Press
ISBN 13 : 0080873979
Total Pages : 177 pages
Book Rating : 4.0/5 (88 download)
Download or read book Functional Analysis written by and published by Academic Press. This book was released on 1978-11-03 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional Analysis
Author : William Bray
Publisher : Springer Science & Business Media
ISBN 13 : 1461222362
Total Pages : 568 pages
Book Rating : 4.4/5 (612 download)
Download or read book Analysis of Divergence written by William Bray and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 7th International Workshop in Analysis and its Applications (IWAA) was held at the University of Maine, June 1-6, 1997 and featured approxi mately 60 mathematicians. The principal theme of the workshop shares the title of this volume and the latter is a direct outgrowth of the workshop. IWAA was founded in 1984 by Professor Caslav V. Stanojevic. The first meeting was held in the resort complex Kupuri, Yugoslavia, June 1-10, 1986, with two pilot meetings preceding. The Organization Committee to gether with the Advisory Committee (R. P. Boas, R. R. Goldberg, J. P. Kahne) set forward the format and content of future meetings. A certain number of papers were presented that later appeared individually in such journals as the Proceedings of the AMS, Bulletin of the AMS, Mathematis chen Annalen, and the Journal of Mathematical Analysis and its Applica tions. The second meeting took place June 1-10, 1987, at the same location. At the plenary session of this meeting it was decided that future meetings should have a principal theme. The theme for the third meeting (June 1- 10, 1989, Kupuri) was Karamata's Regular Variation. The principal theme for the fourth meeting (June 1-10, 1990, Kupuri) was Inner Product and Convexity Structures in Analysis, Mathematical Physics, and Economics. The fifth meeting was to have had the theme, Analysis and Foundations, organized in cooperation with Professor A. Blass (June 1-10, 1991, Kupuri).
Author : Kenneth Hoffman
Publisher : Courier Corporation
ISBN 13 : 048614996X
Total Pages : 227 pages
Book Rating : 4.4/5 (861 download)
Download or read book Banach Spaces of Analytic Functions written by Kenneth Hoffman and published by Courier Corporation. This book was released on 2014-06-10 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: A classic of pure mathematics, this advanced graduate-level text explores the intersection of functional analysis and analytic function theory. Close in spirit to abstract harmonic analysis, it is confined to Banach spaces of analytic functions in the unit disc. The author devotes the first four chapters to proofs of classical theorems on boundary values and boundary integral representations of analytic functions in the unit disc, including generalizations to Dirichlet algebras. The fifth chapter contains the factorization theory of Hp functions, a discussion of some partial extensions of the factorization, and a brief description of the classical approach to the theorems of the first five chapters. The remainder of the book addresses the structure of various Banach spaces and Banach algebras of analytic functions in the unit disc. Enhanced with 100 challenging exercises, a bibliography, and an index, this text belongs in the libraries of students, professional mathematicians, as well as anyone interested in a rigorous, high-level treatment of this topic.
Author : Juan Arias de Reyna
Publisher : Springer Science & Business Media
ISBN 13 : 9783540432708
Total Pages : 210 pages
Book Rating : 4.4/5 (327 download)
Download or read book Pointwise Convergence of Fourier Series written by Juan Arias de Reyna and published by Springer Science & Business Media. This book was released on 2002-04 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a detailed exposition of Carleson-Hunt theorem following the proof of Carleson: to this day this is the only one giving better bounds. It points out the motivation of every step in the proof. Thus the Carleson-Hunt theorem becomes accessible to any analyst.The book also contains the first detailed exposition of the fine results of Hunt, Sjölin, Soria, etc on the convergence of Fourier Series. Its final chapters present original material. With both Fefferman's proof and the recent one of Lacey and Thiele in print, it becomes more important than ever to understand and compare these two related proofs with that of Carleson and Hunt. These alternative proofs do not yield all the results of the Carleson-Hunt proof. The intention of this monograph is to make Carleson's proof accessible to a wider audience, and to explain its consequences for the pointwise convergence of Fourier series for functions in spaces near $äcal Lü^1$, filling a well-known gap in the literature.
