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Books > Science & Mathematics > Mathematics > Calculus & mathematical analysis > Complex analysis

A Panorama of Modern Operator Theory and Related Topics - The Israel Gohberg Memorial Volume (Paperback, 2012): Harry Dym,... A Panorama of Modern Operator Theory and Related Topics - The Israel Gohberg Memorial Volume (Paperback, 2012)
Harry Dym, Marinus A. Kaashoek, Peter Lancaster, Heinz Langer, Leonid Lerer
R3,130 Discovery Miles 31 300 Ships in 10 - 15 working days

This book is dedicated to the memory of Israel Gohberg (1928-2009) - one of the great mathematicians of our time - who inspired innumerable fellow mathematicians and directed many students. The volume reflects the wide spectrum of Gohberg's mathematical interests. It consists of more than 25 invited and peer-reviewed original research papers written by his former students, co-authors and friends. Included are contributions to single and multivariable operator theory, commutative and non-commutative Banach algebra theory, the theory of matrix polynomials and analytic vector-valued functions, several variable complex function theory, and the theory of structured matrices and operators. Also treated are canonical differential systems, interpolation, completion and extension problems, numerical linear algebra and mathematical systems theory.

Lectures on Mappings of Finite Distortion (Paperback, 2014 ed.): Stanislav Hencl, Pekka Koskela Lectures on Mappings of Finite Distortion (Paperback, 2014 ed.)
Stanislav Hencl, Pekka Koskela
R1,993 Discovery Miles 19 930 Ships in 10 - 15 working days

In this book we introduce the class of mappings of finite distortion as a generalization of the class of mappings of bounded distortion. Connections with models of nonlinear elasticity are also discussed. We study continuity properties, behavior of our mappings on null sets, topological properties like openness and discreteness, regularity of the potential inverse mappings and many other aspects.


"

Selected Papers - Oeuvres Scientifiques I - Topology and Fixed Point Theorems Topologie et Theoreme du Point Fixe  Topologie et... Selected Papers - Oeuvres Scientifiques I - Topology and Fixed Point Theorems Topologie et Theoreme du Point Fixe Topologie et Theoreme du Point Fixe (English, French, Paperback, 1998. Reprint 2014 of the 1998 edition)
Paul Malliavin; Jean Leray; Introduction by A Borel
R2,055 Discovery Miles 20 550 Ships in 10 - 15 working days

Jean Leray (1906-1998) was one of the great French mathematicians of his century. His life's workcan be dividedinto 3 major areas, reflected in these 3 volumes. Volume I, to which an Introduction has been contributed by A. Borel, covers Leray's seminal work in algebraic topology, where he created sheaf theory and discovered the spectral sequences. Volume II, with an introduction by P. Lax, covers fluid mechanics and partial differential equations. Leray demonstrated the existence of the infinite-time extension of weak solutions of the Navier-Stokes equations; 60 years later this profound work has retained all its impact. Volume III, on the theory of several complex variables, has a long introduction by G. Henkin. Leray's work on the ramified Cauchy problem will stand for centuries alongside the Cauchy-Kovalevska theorem for the unramified case.

He was awarded the Malaxa Prize (1938), the Grand Prix in Mathematical Sciences (1940), the Feltrinelli Prize (1971), the Wolf Prize in Mathematics (1979), and the Lomonosov Gold Medal (1988)."

A Theory of Branched Minimal Surfaces (Paperback, 2012 ed.): Anthony Tromba A Theory of Branched Minimal Surfaces (Paperback, 2012 ed.)
Anthony Tromba
R1,569 Discovery Miles 15 690 Ships in 10 - 15 working days

One of the most elementary questions in mathematics is whether an area minimizing surface spanning a contour in three space is immersed or not; i.e. does its derivative have maximal rank everywhere. The purpose of this monograph is to present an elementary proof of this very fundamental and beautiful mathematical result. The exposition follows the original line of attack initiated by Jesse Douglas in his Fields medal work in 1931, namely use Dirichlet's energy as opposed to area. Remarkably, the author shows how to calculate arbitrarily high orders of derivatives of Dirichlet's energy defined on the infinite dimensional manifold of all surfaces spanning a contour, breaking new ground in the Calculus of Variations, where normally only the second derivative or variation is calculated. The monograph begins with easy examples leading to a proof in a large number of cases that can be presented in a graduate course in either manifolds or complex analysis. Thus this monograph requires only the most basic knowledge of analysis, complex analysis and topology and can therefore be read by almost anyone with a basic graduate education.

Real and Complex Clifford Analysis (Paperback, 2006 ed.): Sha Huang, Yu Ying Qiao, Guo Chun Wen Real and Complex Clifford Analysis (Paperback, 2006 ed.)
Sha Huang, Yu Ying Qiao, Guo Chun Wen
R3,020 Discovery Miles 30 200 Ships in 10 - 15 working days

Clifford analysis, a branch of mathematics that has been developed since about 1970, has important theoretical value and several applications. In this book, the authors introduce many properties of regular functions and generalized regular functions in real Clifford analysis, as well as harmonic functions in complex Clifford analysis. It covers important developments in handling the incommutativity of multiplication in Clifford algebra, the definitions and computations of high-order singular integrals, boundary value problems, and so on. In addition, the book considers harmonic analysis and boundary value problems in four kinds of characteristic fields proposed by Luogeng Hua for complex analysis of several variables. The great majority of the contents originate in the authors' investigations, and this new monograph will be interesting for researchers studying the theory of functions.

C0-Groups, Commutator Methods and Spectral Theory of N-Body Hamiltonians (Paperback, 1996. Reprint 2013 of the 1996 edition):... C0-Groups, Commutator Methods and Spectral Theory of N-Body Hamiltonians (Paperback, 1996. Reprint 2013 of the 1996 edition)
Werner O. Amrein, Anne Boutet De Monvel, Vladimir Georgescu
R1,653 Discovery Miles 16 530 Ships in 10 - 15 working days

The conjugate operator method is a powerful recently developed technique for studying spectral properties of self-adjoint operators. One of the purposes of this volume is to present a refinement of the original method due to Mourre leading to essentially optimal results in situations as varied as ordinary differential operators, pseudo-differential operators and N-body Schroedinger hamiltonians. Another topic is a new algebraic framework for the N-body problem allowing a simple and systematic treatment of large classes of many-channel hamiltonians. The monograph will be of interest to research mathematicians and mathematical physicists. The authors have made efforts to produce an essentially self-contained text, which makes it accessible to advanced students. Thus about one third of the book is devoted to the development of tools from functional analysis, in particular real interpolation theory for Banach spaces and functional calculus and Besov spaces associated with multi-parameter C0-groups. Certainly this monograph (containing a bibliography of 170 items) is a well-written contribution to this field which is suitable to stimulate further evolution of the theory. (Mathematical Reviews)

Green's Functions in the Theory of Ordinary Differential Equations (Paperback, 2nd Revised edition): Alberto Cabada Green's Functions in the Theory of Ordinary Differential Equations (Paperback, 2nd Revised edition)
Alberto Cabada
R2,427 Discovery Miles 24 270 Ships in 10 - 15 working days

This book provides a complete and exhaustive study of the Green s functions. Professor Cabada first proves the basic properties of Green's functions and discusses the study of nonlinear boundary value problems. Classic methods of lower and upper solutions are explored, with a particular focus on monotone iterative techniques that flow from them. In addition, Cabada proves the existence of positive solutions by constructing operators defined in cones. The book will be of interest to graduate students and researchers interested in the theoretical underpinnings of boundary value problem solutions."

Cohomological Aspects in Complex Non-Kahler Geometry (Paperback, 2014 ed.): Daniele Angella Cohomological Aspects in Complex Non-Kahler Geometry (Paperback, 2014 ed.)
Daniele Angella
R2,296 Discovery Miles 22 960 Ships in 10 - 15 working days

In these notes, we provide a summary of recent results on the cohomological properties of compact complex manifolds not endowed with a Kahler structure.

On the one hand, the large number of developed analytic techniques makes it possible to prove strong cohomological properties for compact Kahler manifolds. On the other, in order to further investigate any of these properties, it is natural to look for manifolds that do not have any Kahler structure.

We focus in particular on studying Bott-Chern and Aeppli cohomologies of compact complex manifolds. Several results concerning the computations of Dolbeault and Bott-Chern cohomologies on nilmanifolds are summarized, allowing readers to study explicit examples. Manifolds endowed with almost-complex structures, or with other special structures (such as, for example, symplectic, generalized-complex, etc.), are also considered."

Complex Binary Number System - Algorithms and Circuits (Paperback, 2013 ed.): Tariq Jamil Complex Binary Number System - Algorithms and Circuits (Paperback, 2013 ed.)
Tariq Jamil
R1,739 R1,486 Discovery Miles 14 860 Save R253 (15%) Ships in 12 - 17 working days

This book is a compilation of the entire research work on the topic of Complex Binary Number System (CBNS) carried out by the author as the principal investigator and members of his research groups at various universities during the years 2000-2012. Pursuant to these efforts spanning several years, the realization of CBNS as a viable alternative to represent complex numbers in an "all-in-one" binary number format has become possible and efforts are underway to build computer hardware based on this unique number system.
It is hoped that this work will be of interest to anyone involved in computer arithmetic and digital logic design and kindle renewed enthusiasm among the engineers working in the areas of digital signal and image processing for developing newer and efficient algorithms and techniques incorporating CBNS.

Vanishing Theorems on Complex Manifolds (Paperback, Softcover reprint of the original 1st ed. 1985): B. Shiffman, Sommese Vanishing Theorems on Complex Manifolds (Paperback, Softcover reprint of the original 1st ed. 1985)
B. Shiffman, Sommese
R2,338 Discovery Miles 23 380 Ships in 10 - 15 working days
Theory and Application of Graphs (Paperback, Softcover reprint of the original 1st ed. 2003): Junming Xu Theory and Application of Graphs (Paperback, Softcover reprint of the original 1st ed. 2003)
Junming Xu
R4,588 Discovery Miles 45 880 Ships in 10 - 15 working days

In the spectrum of mathematics, graph theory which studies a mathe matical structure on a set of elements with a binary relation, as a recognized discipline, is a relative newcomer. In recent three decades the exciting and rapidly growing area of the subject abounds with new mathematical devel opments and significant applications to real-world problems. More and more colleges and universities have made it a required course for the senior or the beginning postgraduate students who are majoring in mathematics, computer science, electronics, scientific management and others. This book provides an introduction to graph theory for these students. The richness of theory and the wideness of applications make it impossi ble to include all topics in graph theory in a textbook for one semester. All materials presented in this book, however, I believe, are the most classical, fundamental, interesting and important. The method we deal with the mate rials is to particularly lay stress on digraphs, regarding undirected graphs as their special cases. My own experience from teaching out of the subject more than ten years at University of Science and Technology of China (USTC) shows that this treatment makes hardly the course di: fficult, but much more accords with the essence and the development trend of the subject."

Selected Papers II (Paperback, 2005. Reprint 2013 of the 2005 edition): Peter Sarnak Selected Papers II (Paperback, 2005. Reprint 2013 of the 2005 edition)
Peter Sarnak; Peter D. Lax; Edited by Andrew J. Majda
R2,083 Discovery Miles 20 830 Ships in 10 - 15 working days

A renowned mathematician who considers himself both applied and theoretical in his approach, Peter Lax has spent most of his professional career at NYU, making significant contributions to both mathematics and computing. He has written several important published works and has received numerous honors including the National Medal of Science, the Lester R. Ford Award, the Chauvenet Prize, the Semmelweis Medal, the Wiener Prize, and the Wolf Prize. Several students he has mentored have become leaders in their fields.

Two volumes span the years from 1952 up until 1999, and cover many varying topics, from functional analysis, partial differential equations, and numerical methods to conservation laws, integrable systems and scattering theory. After each paper, or collection of papers, is a commentary placing the paper in context and where relevant discussing more recent developments. Many of the papers in these volumes have become classics and should be read by any serious student of these topics. In terms of insight, depth, and breadth, Lax has few equals. The reader of this selecta will quickly appreciate his brilliance as well as his masterful touch. Having this collection of papers in one place allows one to follow the evolution of his ideas and mathematical interests and to appreciate how many of these papers initiated topics that developed lives of their own.

Fractal Geometry and Analysis (Paperback, Softcover reprint of the original 1st ed. 1991): Jacques Belair, Serge Dubuc Fractal Geometry and Analysis (Paperback, Softcover reprint of the original 1st ed. 1991)
Jacques Belair, Serge Dubuc
R1,664 Discovery Miles 16 640 Ships in 10 - 15 working days

This ASI- which was also the 28th session of the Seminaire de mathematiques superieures of the Universite de Montreal - was devoted to Fractal Geometry and Analysis. The present volume is the fruit of the work of this Advanced Study Institute. We were fortunate to have with us Prof. Benoit Mandelbrot - the creator of numerous concepts in Fractal Geometry - who gave a series of lectures on multifractals, iteration of analytic functions, and various kinds of fractal stochastic processes. Different foundational contributions for Fractal Geometry like measure theory, dy namical systems, iteration theory, branching processes are recognized. The geometry of fractal sets and the analytical tools used to investigate them provide a unifying theme of this book. The main topics that are covered are then as follows. Dimension Theory. Many definitions of fractional dimension have been proposed, all of which coincide on "regular" objects, but often take different values for a given fractal set. There is ample discussion on piecewise estimates yielding actual values for the most common dimensions (Hausdorff, box-counting and packing dimensions). The dimension theory is mainly discussed by Mendes-France, Bedford, Falconer, Tricot and Rata. Construction of fractal sets. Scale in variance is a fundamental property of fractal sets."

Lyapunov-type Inequalities - With Applications to Eigenvalue Problems (Paperback, 2013 ed.): Juan Pablo Pinasco Lyapunov-type Inequalities - With Applications to Eigenvalue Problems (Paperback, 2013 ed.)
Juan Pablo Pinasco
R1,562 Discovery Miles 15 620 Ships in 10 - 15 working days

The eigenvalue problems for quasilinear and nonlinear operators present many differences with the linear case, and a Lyapunov inequality for quasilinear resonant systems showed the existence of eigenvalue asymptotics driven by the coupling of the equations instead of the order of the equations. For p=2, the coupling and the order of the equations are the same, so this cannot happen in linear problems. Another striking difference between linear and quasilinear second order differential operators is the existence of Lyapunov-type inequalities in R^n when p>n. Since the linear case corresponds to p=2, for the usual Laplacian there exists a Lyapunov inequality only for one-dimensional problems. For linear higher order problems, several Lyapunov-type inequalities were found by Egorov and Kondratiev and collected in On spectral theory of elliptic operators, Birkhauser Basel 1996. However, there exists an interesting interplay between the dimension of the underlying space, the order of the differential operator, the Sobolev space where the operator is defined, and the norm of the weight appearing in the inequality which is not fully developed. Also, the Lyapunov inequality for differential equations in Orlicz spaces can be used to develop an oscillation theory, bypassing the classical sturmian theory which is not known yet for those equations. For more general operators, like the p(x) laplacian, the possibility of existence of Lyapunov-type inequalities remains unexplored.

Complex and Differential Geometry - Conference held at Leibniz Universitat Hannover, September 14 - 18, 2009 (Paperback, 2011... Complex and Differential Geometry - Conference held at Leibniz Universitat Hannover, September 14 - 18, 2009 (Paperback, 2011 ed.)
Wolfgang Ebeling, Klaus Hulek, Knut Smoczyk
R3,062 Discovery Miles 30 620 Ships in 10 - 15 working days

This volume contains the Proceedings of the conference "Complex and Differential Geometry 2009", held at Leibniz Universitat Hannover, September 14 - 18, 2009. It was the aim of this conference to bring specialists from differential geometry and (complex) algebraic geometry together and to discuss new developments in and the interaction between these fields. Correspondingly, the articles in this book cover a wide area of topics, ranging from topics in (classical) algebraic geometry through complex geometry, including (holomorphic) symplectic and poisson geometry, to differential geometry (with an emphasis on curvature flows) and topology.

An Introduction to Laplace Transforms and Fourier Series (Paperback, 2nd ed. 2014): Phil Dyke An Introduction to Laplace Transforms and Fourier Series (Paperback, 2nd ed. 2014)
Phil Dyke
R1,170 Discovery Miles 11 700 Ships in 10 - 15 working days

Laplace transforms continue to be a very important tool for the engineer, physicist and applied mathematician. They are also now useful to financial, economic and biological modellers as these disciplines become more quantitative. Any problem that has underlying linearity and with solution based on initial values can be expressed as an appropriate differential equation and hence be solved using Laplace transforms.

In this book, there is a strong emphasis on application with the necessary mathematical grounding. There are plenty of worked examples with all solutions provided. This enlarged new edition includes generalised Fourier series and a completely new chapter on wavelets.

Only knowledge of elementary trigonometry and calculus are required as prerequisites. "An Introduction to Laplace Transforms and Fourier Series" will be useful for second and third year undergraduate students in engineering, physics or mathematics, as well as for graduates in any discipline such as financial mathematics, econometrics and biological modelling requiring techniques for solving initial value problems.

Pluripotential Theory - Cetraro, Italy 2011, Editors: Filippo Bracci, John Erik Fornaess (Paperback, 2013 ed.): Giorgio... Pluripotential Theory - Cetraro, Italy 2011, Editors: Filippo Bracci, John Erik Fornaess (Paperback, 2013 ed.)
Giorgio Patrizio, Zbigniew Blocki, Francois Berteloot, Jean-Pierre Demailly; Adapted by Filippo Bracci, …
R2,546 Discovery Miles 25 460 Ships in 10 - 15 working days

Pluripotential theory is a very powerful tool in geometry, complex analysis and dynamics. This volume brings together the lectures held at the 2011 CIME session on "pluripotential theory" in Cetraro, Italy. This CIME course focused on complex Monge-Ampere equations, applications of pluripotential theory to Kahler geometry and algebraic geometry and to holomorphic dynamics. The contributions provide an extensive description of the theory and its very recent developments, starting from basic introductory materials and concluding with open questions in current research.

Harmonic Analysis and Hypergroups (Paperback, Softcover reprint of the original 1st ed. 1998): Ken Ross Harmonic Analysis and Hypergroups (Paperback, Softcover reprint of the original 1st ed. 1998)
Ken Ross
R3,008 Discovery Miles 30 080 Ships in 10 - 15 working days

Under the guidance and inspiration of Dr. Ajit Iqbal Singh, an International Conference on Harmonie Analysis took place at the Uni- versity of Delhi, India, from December 18 to 22, 1995. Twenty-one dis- tinguished mathematicians from around the world, as weIl as many from India, participated in this successful and stimulating conference. An underlying theme of the conference was hypergroups, the the- ory of wh ich has developed and been found useful in fields as diverse as special functions, differential equations, probability theory, representa- tion theory, measure theory, Hopf algebras and quantum groups. Some other areas of emphasis that emerged were harmonie analysis of analytic functions, ergo die theory and wavelets. This book includes most of the proceedings of this conference. I chaired the Editorial Board for this publication; the other members were J. M. Anderson (University College London), G. L. Litvinov (Centre for Optimization and Mathematical Modeling, Institute for New Technolo- gies, Moscow), Mrs. A. I. Singh (University ofDelhi, India), V. S. Sunder (Institute of Mathematical Sciences, C.LT., Madras, India), and N. J. Wildberger (University of New South Wales, Australia). I appreciate all the help provided by these editors as weIl as the help and cooperation of Our authors and referees of their papers. I especially appreciate techni- cial assistance and advice from Alan L. Schwartz (University of Missouri - St. Louis, USA) and Martin E. Walter (University of Colorado, USA). Finally, I thank Our editor, Ann Kostant, for her help and encouragement during this project.

A Simple Introduction to the Mixed Finite Element Method - Theory and Applications (Paperback, 2014 ed.): Gabriel N. Gatica A Simple Introduction to the Mixed Finite Element Method - Theory and Applications (Paperback, 2014 ed.)
Gabriel N. Gatica
R2,883 Discovery Miles 28 830 Ships in 10 - 15 working days

The main purpose of this book is to provide a simple and accessible introduction to the mixed finite element method as a fundamental tool to numerically solve a wide class of boundary value problems arising in physics and engineering sciences. The book is based on material that was taught in corresponding undergraduate and graduate courses at the Universidad de Concepcion, Concepcion, Chile, during the last 7 years. As compared with several other classical books in the subject, the main features of the present one have to do, on one hand, with an attempt of presenting and explaining most of the details in the proofs and in the different applications. In particular several results and aspects of the corresponding analysis that are usually available only in papers or proceedings are included here.

Selected Papers I (Paperback, 2005. Reprint 2013 of the 2005 edition): Peter Sarnak Selected Papers I (Paperback, 2005. Reprint 2013 of the 2005 edition)
Peter Sarnak; Peter D. Lax; Edited by Andrew J. Majda
R2,350 Discovery Miles 23 500 Ships in 10 - 15 working days

A renowned mathematician who considers himself both applied and theoretical in his approach, Peter Lax has spent most of his professional career at NYU, making significant contributions to both mathematics and computing. He has written several important published works and has received numerous honors including the National Medal of Science, the Lester R. Ford Award, the Chauvenet Prize, the Semmelweis Medal, the Wiener Prize, and the Wolf Prize. Several students he has mentored have become leaders in their fields.

Two volumes span the years from 1952 up until 1999, and cover many varying topics, from functional analysis, partial differential equations, and numerical methods to conservation laws, integrable systems andscattering theory.After each paper, or collection of papers, is a commentary placing the paper in context and where relevant discussing more recent developments.Many of the papers in these volumes have become classics and should be read by any serious student of these topics.In terms of insight, depth, and breadth, Lax has few equals.The reader of this selecta will quickly appreciate his brilliance as well as his masterful touch.Having this collection of papers in one place allows one to follow the evolution of his ideas and mathematical interests and to appreciate how many of these papers initiated topics that developed lives of their own."

Generalizations of Thomae's Formula for Zn Curves (Paperback, 2011 ed.): Hershel M. Farkas, Shaul Zemel Generalizations of Thomae's Formula for Zn Curves (Paperback, 2011 ed.)
Hershel M. Farkas, Shaul Zemel
R3,044 Discovery Miles 30 440 Ships in 10 - 15 working days

Previous publications on the generalization of the Thomae formulae to "Zn" curves have emphasized the theory's implications in mathematical physics and depended heavily on applied mathematical techniques. This book redevelops these previous results demonstrating how they can be derived directly from the basic properties of theta functions as functions on compact Riemann surfaces.

"Generalizations of Thomae's Formulafor "Zn" Curves" includes several refocused proofs developed in a generalized context that is more accessible to researchers in related mathematical fields such as algebraic geometry, complex analysis, and number theory.

This book is intended for mathematicians with an interest in complex analysis, algebraic geometry or number theory as well as physicists studying conformal field theory."

Hypercomplex Analysis and Applications (Paperback, 2011 ed.): Irene Sabadini, Franciscus Sommen Hypercomplex Analysis and Applications (Paperback, 2011 ed.)
Irene Sabadini, Franciscus Sommen
R3,019 Discovery Miles 30 190 Ships in 10 - 15 working days

The purpose of the volume is to bring forward recent trends of research in hypercomplex analysis. The list of contributors includes first rate mathematicians and young researchers working on several different aspects in quaternionic and Clifford analysis. Besides original research papers, there are papers providing the state-of-the-art of a specific topic, sometimes containing interdisciplinary fields. The intended audience includes researchers, PhD students, postgraduate students who are interested in the field and in possible connection between hypercomplex analysis and other disciplines, including mathematical analysis, mathematical physics, algebra.

The Structure of Functions (Paperback, Reprint of the 1st edition 2001 by Birkhauser Verlag, Switzerland): Hans Triebel The Structure of Functions (Paperback, Reprint of the 1st edition 2001 by Birkhauser Verlag, Switzerland)
Hans Triebel
R1,642 Discovery Miles 16 420 Ships in 10 - 15 working days

This book deals with the constructive Weierstrassian approach to the theory of function spaces and various applications. The first chapter is devoted to a detailed study of quarkonial (subatomic) decompositions of functions and distributions on euclidean spaces, domains, manifolds and fractals. This approach combines the advantages of atomic and wavelet representations. It paves the way to sharp inequalities and embeddings in function spaces, spectral theory of fractal elliptic operators, and a regularity theory of some semi-linear equations. The book is self-contained, although some parts may be considered as a continuation of the author's book Fractals and Spectra. It is directed to mathematicians and (theoretical) physicists interested in the topics indicated and, in particular, how they are interrelated. - - - The book under review can be regarded as a continuation of [his book on "Fractals and spectra", 1997] (...) There are many sections named: comments, preparations, motivations, discussions and so on. These parts of the book seem to be very interesting and valuable. They help the reader to deal with the main course. (Mathematical Reviews)

Banach Space Complexes (Paperback, Softcover reprint of the original 1st ed. 1995): C. G. Ambrozie, Florian Horia Vasilescu Banach Space Complexes (Paperback, Softcover reprint of the original 1st ed. 1995)
C. G. Ambrozie, Florian Horia Vasilescu
R1,579 Discovery Miles 15 790 Ships in 10 - 15 working days

The aim of this work is to initiate a systematic study of those properties of Banach space complexes that are stable under certain perturbations. A Banach space complex is essentially an object of the form 1 op-l oP +1 ... --+ XP- --+ XP --+ XP --+ ... , where p runs a finite or infiniteinterval ofintegers, XP are Banach spaces, and oP : Xp ..... Xp+1 are continuous linear operators such that OPOp-1 = 0 for all indices p. In particular, every continuous linear operator S : X ..... Y, where X, Yare Banach spaces, may be regarded as a complex: O ..... X ~ Y ..... O. The already existing Fredholm theory for linear operators suggested the possibility to extend its concepts and methods to the study of Banach space complexes. The basic stability properties valid for (semi-) Fredholm operators have their counterparts in the more general context of Banach space complexes. We have in mind especially the stability of the index (i.e., the extended Euler characteristic) under small or compact perturbations, but other related stability results can also be successfully extended. Banach (or Hilbert) space complexes have penetrated the functional analysis from at least two apparently disjoint directions. A first direction is related to the multivariable spectral theory in the sense of J. L.

Series Associated with the Zeta and Related Functions (Paperback, Softcover reprint of the original 1st ed. 2001): Hari M.... Series Associated with the Zeta and Related Functions (Paperback, Softcover reprint of the original 1st ed. 2001)
Hari M. Srivastava, Junesang Choi
R2,768 Discovery Miles 27 680 Ships in 10 - 15 working days

In recent years there has been an increasing interest in problems involving closed form evaluations of (and representations of the Riemann Zeta function at positive integer arguments as) various families of series associated with the Riemann Zeta function ((s), the Hurwitz Zeta function ((s, a), and their such extensions and generalizations as (for example) Lerch's transcendent (or the Hurwitz-Lerch Zeta function) iI>(z, s, a). Some of these developments have apparently stemmed from an over two-century-old theorem of Christian Goldbach (1690-1764), which was stated in a letter dated 1729 from Goldbach to Daniel Bernoulli (1700-1782), from recent rediscoveries of a fairly rapidly convergent series representation for ((3), which is actually contained in a 1772 paper by Leonhard Euler (1707-1783), and from another known series representation for ((3), which was used by Roger Apery (1916-1994) in 1978 in his celebrated proof of the irrationality of ((3). This book is motivated essentially by the fact that the theories and applications of the various methods and techniques used in dealing with many different families of series associated with the Riemann Zeta function and its aforementioned relatives are to be found so far only"in widely scattered journal articles. Thus our systematic (and unified) presentation of these results on the evaluation and representation of the Zeta and related functions is expected to fill a conspicuous gap in the existing books dealing exclusively with these Zeta functions."

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