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Theory of Approximate Functional Equations

Theory of Approximate Functional Equations
  • Author : Madjid Eshaghi Gordji,Sadegh Abbaszadeh
  • Publisher :Unknown
  • Release Date :2016-03-03
  • Total pages :148
  • ISBN : 9780128039717
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Summary : Presently no other book deals with the stability problem of functional equations in Banach algebras, inner product spaces and amenable groups. Moreover, in most stability theorems for functional equations, the completeness of the target space of the unknown functions contained in the equation is assumed. Recently, the question, whether the stability of a functional equation implies this completeness, has been investigated by several authors. In this book the authors investigate these developments in the theory of approximate functional equations. A useful text for graduate seminars and of interest to a wide audience including mathematicians and applied researchers Presents recent developments in the theory of approximate functional equations Discusses the stability problem of functional equations in Banach algebras, inner product spaces and amenable groups

The Riemann Zeta-Function

The Riemann Zeta-Function
  • Author : Aleksandar Ivic
  • Publisher :Unknown
  • Release Date :2012-07-12
  • Total pages :562
  • ISBN : 9780486140049
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Summary : This text covers exponential integrals and sums, 4th power moment, zero-free region, mean value estimates over short intervals, higher power moments, omega results, zeros on the critical line, zero-density estimates, and more. 1985 edition.

Iterative Functional Equations

Iterative Functional Equations
  • Author : Marek Kuczma,Bogdan Choczewski,Roman Ger
  • Publisher :Unknown
  • Release Date :1990-07-27
  • Total pages :552
  • ISBN : 0521355613
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Summary : A cohesive and comprehensive account of the modern theory of iterative functional equations. Many of the results included have appeared before only in research literature, making this an essential volume for all those working in functional equations and in such areas as dynamical systems and chaos, to which the theory is closely related. The authors introduce the reader to the theory and then explore the most recent developments and general results. Fundamental notions such as the existence and uniqueness of solutions to the equations are stressed throughout, as are applications of the theory to such areas as branching processes, differential equations, ergodic theory, functional analysis and geometry. Other topics covered include systems of linear and nonlinear equations of finite and infinite ORD various function classes, conjugate and commutable functions, linearization, iterative roots of functions, and special functional equations.

An Introduction to the Theory of the Riemann Zeta-Function

An Introduction to the Theory of the Riemann Zeta-Function
  • Author : S. J. Patterson
  • Publisher :Unknown
  • Release Date :1995-02-02
  • Total pages :229
  • ISBN : 9781316583357
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Summary : This is a modern introduction to the analytic techniques used in the investigation of zeta functions, through the example of the Riemann zeta function. Riemann introduced this function in connection with his study of prime numbers and from this has developed the subject of analytic number theory. Since then many other classes of 'zeta function' have been introduced and they are now some of the most intensively studied objects in number theory. Professor Patterson has emphasised central ideas of broad application, avoiding technical results and the customary function-theoretic approach. Thus, graduate students and non-specialists will find this an up-to-date and accessible introduction, especially for the purposes of algebraic number theory. There are many exercises included throughout, designed to encourage active learning.

Duality in Analytic Number Theory

Duality in Analytic Number Theory
  • Author : Peter D. T. A. Elliott
  • Publisher :Unknown
  • Release Date :1997-02-13
  • Total pages :229
  • ISBN : 9781316582596
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Summary : In this stimulating book, aimed at researchers both established and budding, Peter Elliott demonstrates a method and a motivating philosophy that combine to cohere a large part of analytic number theory, including the hitherto nebulous study of arithmetic functions. Besides its application, the book also illustrates a way of thinking mathematically: historical background is woven into the narrative, variant proofs illustrate obstructions, false steps and the development of insight, in a manner reminiscent of Euler. It is shown how to formulate theorems as well as how to construct their proofs. Elementary notions from functional analysis, Fourier analysis, functional equations and stability in mechanics are controlled by a geometric view and synthesized to provide an arithmetical analogue of classical harmonic analysis that is powerful enough to establish arithmetic propositions until now beyond reach. Connections with other branches of analysis are illustrated by over 250 exercises, structured in chains about individual topics.

Functional Equations: History, Applications and Theory

Functional Equations: History, Applications and Theory
  • Author : J. Aczél
  • Publisher :Unknown
  • Release Date :2012-12-06
  • Total pages :246
  • ISBN : 9789400963207
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Summary : Approach your problems from It isn't that they can't see the right end and begin with the solution. It is that they the answers. Then one day, can't see the problem. perhaps you will find the G.K. Chesterton. The Scandal of final question. Father Brown 'The Point of a Pin' . 'The Hermit Clad ~n Crane Feathers' in R. van Gulik's The Chinese Haze Murders. Growing specialization and diversification have brought a host of monographs and textbooks on increasingly specialized topics. However, the "tree" of knowledge of mathematics and related fields does not grow only by putting forth new branches. It also happens, quite often in fact, that branches which were thought to be completely disparate are suddenly seen to be related. Further, the kind and level of sophistication of mathe matics applied in various sciences has changed drastically in recent years: measure theory is used (non-trivially) ~n re gional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical pro gramming profit from homotopy theory; Lie algebras are rele vant to filtering; and prediction and electrical en~ineering can use Stein spaces. And in addition to this there are such new emerging subdisciplines as "completely integrable systems", "chaos, synergetics and large-scale order", which are almost impossible to fit into the existinf, classifi~ation schemes. They draw upon widely different sections of mathematics.

Functional Analysis, Approximation Theory, and Numerical Analysis

Functional Analysis, Approximation Theory, and Numerical Analysis
  • Author : John Michael Rassias
  • Publisher :Unknown
  • Release Date :1994
  • Total pages :325
  • ISBN : 9810207379
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Summary : This book consists of papers written by outstanding mathematicians. It deals with both theoretical and applied aspects of the mathematical contributions of BANACH, ULAM, and OSTROWSKI, which broaden the horizons of Functional Analysis, Approximation Theory, and Numerical Analysis in accordance with contemporary mathematical standards.

Analytic Number Theory

Analytic Number Theory
  • Author : Japan) Taniguchi International Symposium on Mathematics: Analytic Number Theory (1996 : Kyoto
  • Publisher :Unknown
  • Release Date :1997-10-16
  • Total pages :382
  • ISBN : 0521625122
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Summary : Authoritative, up-to-date review of analytic number theory containing outstanding contributions from leading international figures.

Functional Equations — Results and Advances

Functional Equations — Results and Advances
  • Author : Zoltan Daroczy,Zsolt Páles
  • Publisher :Unknown
  • Release Date :2013-06-29
  • Total pages :361
  • ISBN : 9781475752885
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Summary : The theory of functional equations has been developed in a rapid and productive way in the second half of the Twentieth Century. First of all, this is due to the fact that the mathematical applications raised the investigations of newer and newer types of functional equations. At the same time, the self development of this theory was also very fruitful. This can be followed in many monographs that treat and discuss the various methods and approaches. These developments were also essentially influenced by a number jour nals, for instance, by the Publicationes Mathematicae Debrecen (founded in 1953) and by the Aequationes Mathematicae (founded in 1968), be cause these journals published papers from the field of functional equa tions readily and frequently. The latter journal also publishes the yearly report of the International Symposia on Functional Equations and a comprehensive bibliography of the most recent papers. At the same time, there are periodically and traditionally organized conferences in Poland and in Hungary devoted to functional equations and inequali ties. In 2000, the 38th International Symposium on Functional Equations was organized by the Institute of Mathematics and Informatics of the University of Debrecen in Noszvaj, Hungary. The report about this meeting can be found in Aequationes Math. 61 (2001), 281-320.

The Riemann Zeta-Function

The Riemann Zeta-Function
  • Author : Anatoly A. Karatsuba,S. M. Voronin
  • Publisher :Unknown
  • Release Date :1992-01-01
  • Total pages :408
  • ISBN : 9783110886146
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Summary : The aim of the series is to present new and important developments in pure and applied mathematics. Well established in the community over two decades, it offers a large library of mathematics including several important classics. The volumes supply thorough and detailed expositions of the methods and ideas essential to the topics in question. In addition, they convey their relationships to other parts of mathematics. The series is addressed to advanced readers wishing to thoroughly study the topic. Editorial Board Lev Birbrair, Universidade Federal do Ceará, Fortaleza, Brasil Victor P. Maslov, Russian Academy of Sciences, Moscow, Russia Walter D. Neumann, Columbia University, New York, USA Markus J. Pflaum, University of Colorado, Boulder, USA Dierk Schleicher, Jacobs University, Bremen, Germany

Functional Equations with Causal Operators

Functional Equations with Causal Operators
  • Author : C. Corduneanu
  • Publisher :Unknown
  • Release Date :2002-09-05
  • Total pages :184
  • ISBN : 020316637X
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Summary : Functional equations encompass most of the equations used in applied science and engineering: ordinary differential equations, integral equations of the Volterra type, equations with delayed argument, and integro-differential equations of the Volterra type. The basic theory of functional equations includes functional differential equations with cau

Handbook of Functional Equations

Handbook of Functional Equations
  • Author : Themistocles M. Rassias
  • Publisher :Unknown
  • Release Date :2014-11-21
  • Total pages :396
  • ISBN : 9781493912865
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Summary : This handbook consists of seventeen chapters written by eminent scientists from the international mathematical community, who present important research works in the field of mathematical analysis and related subjects, particularly in the Ulam stability theory of functional equations. The book provides an insight into a large domain of research with emphasis to the discussion of several theories, methods and problems in approximation theory, analytic inequalities, functional analysis, computational algebra and applications. The notion of stability of functional equations has its origins with S. M. Ulam, who posed the fundamental problem for approximate homomorphisms in 1940 and with D. H. Hyers, Th. M. Rassias, who provided the first significant solutions for additive and linear mappings in 1941 and 1978, respectively. During the last decade the notion of stability of functional equations has evolved into a very active domain of mathematical research with several applications of interdisciplinary nature. The chapters of this handbook focus mainly on both old and recent developments on the equation of homomorphism for square symmetric groupoids, the linear and polynomial functional equations in a single variable, the Drygas functional equation on amenable semigroups, monomial functional equation, the Cauchy–Jensen type mappings, differential equations and differential operators, operational equations and inclusions, generalized module left higher derivations, selections of set-valued mappings, D’Alembert’s functional equation, characterizations of information measures, functional equations in restricted domains, as well as generalized functional stability and fixed point theory.

Functional Analysis and Approximation Theory in Numerical Analysis

Functional Analysis and Approximation Theory in Numerical Analysis
  • Author : R. S. Varga
  • Publisher :Unknown
  • Release Date :1971-01-01
  • Total pages :76
  • ISBN : 1611970644
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Summary : Surveys the enormous literature on numerical approximation of solutions of elliptic boundary problems by means of variational and finite element methods, requiring almost constant application of results and techniques from functional analysis and approximation theory to the field of numerical analysis.

Descriptive Theory of Sets and Functions. Functional Analysis in Semi-ordered Spaces

Descriptive Theory of Sets and Functions. Functional Analysis in Semi-ordered Spaces
  • Author : L.V. Kantorovich
  • Publisher :Unknown
  • Release Date :1996-02-19
  • Total pages :384
  • ISBN : 2884490124
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Summary : This book presents articles of L.V. Kantorovich on the descriptive theory of sets and function and on functional analysis in semi-ordered spaces, to demonstrate the unity of L.V. Kantorovich's creative research. It also includes two papers on the "extension of Hilbert space".

The Theory of Hardy's Z-Function

The Theory of Hardy's Z-Function
  • Author : A. Ivić
  • Publisher :Unknown
  • Release Date :2013
  • Total pages :245
  • ISBN : 9781107028838
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Summary : "This book is an outgrowth of a mini-course held at the Arctic Number Theory School, University of Helsinki, May 18-25, 2011. The central topic is Hardy's function, of great importance in the theory of the Riemann zeta-function. It is named after GodfreyHarold Hardy FRS (1877-1947), who was a prominent English mathematician, well-known for his achievements in number theory and mathematical analysis"--

Introduction to Functional Equations

Introduction to Functional Equations
  • Author : Costas Efthimiou
  • Publisher :Unknown
  • Release Date :2011-10-13
  • Total pages :363
  • ISBN : 9780821853146
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Summary : Functions and their properties have been part of the rigorous precollege curriculum for decades. And functional equations have been a favorite topic of the leading national and international mathematical competitions. Yet the subject has not received equal attention by authors at an introductory level. The majority of the books on the topic remain unreachable to the curious and intelligent precollege student. The present book is an attempt to eliminate this disparity. The book opens with a review chapter on functions, which collects the relevant foundational information on functions, plus some material potentially new to the reader. The next chapter presents a working definition of functional equations and explains the difficulties in trying to systematize the theory. With each new chapter, the author presents methods for the solution of a particular group of equations. Each chapter is complemented with many solved examples, the majority of which are taken from mathematical competitions and professional journals. The book ends with a chapter of unsolved problems and some other auxiliary material. The book is an invaluable resource for precollege and college students who want to deepen their knowledge of functions and their properties, for teachers and instructors who wish to enrich their curricula, and for any lover of mathematical problem-solving techniques. In the interest of fostering a greater awareness and appreciation of mathematics and its connections to other disciplines and everyday life, MSRI and the AMS are publishing books in the Mathematical Circles Library series as a service to young people, their parents and teachers, and the mathematics profession.

Itinerant Seminar on Functional Equations, Approximation and Convexity

Itinerant Seminar on Functional Equations, Approximation and Convexity
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1988
  • Total pages :229
  • ISBN : UOM:39015049389029
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Summary :

Optimal Control of Differential and Functional Equations

Optimal Control of Differential and Functional Equations
  • Author : J. Warga
  • Publisher :Unknown
  • Release Date :2014-05-10
  • Total pages :546
  • ISBN : 9781483259192
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Summary : Optimal Control of Differential and Functional Equations presents a mathematical theory of deterministic optimal control, with emphasis on problems involving functional-integral equations and functional restrictions. The book reviews analytical foundations, and discusses deterministic optimal control problems requiring original, approximate, or relaxed solutions. Original solutions involve mathematicians, and approximate solutions concern engineers. Relaxed solutions yield a complete theory that encompasses both existence theorems and necessary conditions. The text also presents general optimal control problems, optimal control of ordinary differential equations, and different types of functional-integral equations. The book discusses control problems defined by equations in Banach spaces, the convex cost functionals, and the weak necessary conditions for an original minimum. The text illustrates a class of ordinary differential problems with examples, and explains some conflicting control problems with relaxed adverse controls, as well as conflicting control problems with hyper-relaxed adverse controls. The book is intended for mature mathematicians, graduate students in analysis, and practitioners of optimal control whose primary interests and training are in science or engineering.

Approximate Solutions of Operator Equations

Approximate Solutions of Operator Equations
  • Author : Mingjun Chen,Zhongying Chen,Guanrong Chen
  • Publisher :Unknown
  • Release Date :1997
  • Total pages :343
  • ISBN : 9810230648
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Summary : This book offers an elementary and self-contained introduction to many fundamental issues concerning approximate solutions of operator equations formulated in an abstract Banach space setting, including important topics such as solvability, computational schemes, convergence, stability and error estimates. The operator equations under investigation include various linear and nonlinear types of ordinary and partial differential equations, integral equations, and abstract evolution equations, which are frequently involved in applied mathematics and engineering applications.Each chapter contains well-selected examples and exercises, for the purposes of demonstrating the fundamental theories and methods developed in the text and familiarizing the reader with functional analysis techniques useful for numerical solutions of various operator equations.

On Applications and Theory of Functional Equations

On Applications and Theory of Functional Equations
  • Author : J. Aczél
  • Publisher :Unknown
  • Release Date :2014-05-12
  • Total pages :64
  • ISBN : 9781483262659
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Summary : On Applications and Theory of Functional Equations focuses on the principles and advancement of numerical approaches used in functional equations. The publication first offers information on the history of functional equations, noting that the research on functional equations originated in problems related to applied mathematics. The text also highlights the influence of J. d'Alembert, S. D. Poisson, E. Picard, and A. L. Cauchy in promoting the processes of numerical analyses involving functional equations. The role of vectors in solving functional equations is also noted. The book ponders on the international Fifth Annual Meeting on Functional Equations, held in Waterloo, Ontario, Canada on April 24-30, 1967. The meeting gathered participants from America, Asia, Australia, and Europe. One of the topics presented at the meeting focuses on the survey of materials dealing with the progress of approaches in the processes and methodologies involved in solving problems dealing with functional equations. The influence, works, and contributions of A. L. Cauchy, G. Darboux, and G. S. Young to the field are also underscored. The publication is a valuable reference for readers interested in functional equations.

Russian Mathematical Surveys

Russian Mathematical Surveys
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1988
  • Total pages :229
  • ISBN : UOM:39015039029882
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Summary :