Best Approximation by Linear Superpositions (approximate Nomography)

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Author :
Publisher : American Mathematical Soc.
ISBN 13 : 9780821804223
Total Pages : 175 pages
Book Rating : 4.8/5 (42 download)

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Book Synopsis Best Approximation by Linear Superpositions (approximate Nomography) by : S. I͡A. Khavinson

Download or read book Best Approximation by Linear Superpositions (approximate Nomography) written by S. I͡A. Khavinson and published by American Mathematical Soc.. This book was released on 1997-01-01 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with problems of approximation of continuous or bounded functions of several variables by linear superposition of functions that are from the same class and have fewer variables. The main topic is the space of linear superpositions $D$ considered as a subspace of the space of continuous functions $C(X)$ on a compact space $X$. Such properties as density of $D$ in $C(X)$, its closedness, proximality, etc. are studied in great detail. The approach to these and other problems based on duality and the Hahn-Banach theorem is emphasized. Also, considerable attention is given to the discussion of the Diliberto-Straus algorithm for finding the best approximation of a given function by linear superpositions.

Best Approximation by Linear Superpositions (approximate Nomography)

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Author :
Publisher : American Mathematical Soc.
ISBN 13 : 9780821897737
Total Pages : 188 pages
Book Rating : 4.8/5 (977 download)

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Book Synopsis Best Approximation by Linear Superpositions (approximate Nomography) by : S. I͡A. Khavinson

Download or read book Best Approximation by Linear Superpositions (approximate Nomography) written by S. I͡A. Khavinson and published by American Mathematical Soc.. This book was released on 1997-01-01 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with problems of approximation of continuous or bounded functions of several variables by linear superposition of functions that are from the same class and have fewer variables. The main topic is the space of linear superpositions D considered as a sub-space of the space of continous functions C(X) on a compact space X. Such properties as density of D in C(X), its closedness, proximality, etc. are studied in great detail. The approach to these and other problems based on duality and the Hahn-Banach theorem is emphasized. Also, considerable attention is given to the discussion of the Diliberto-Straus algorithm for finding the best approximation of a given function by linear superpositions.

Ridge Functions and Applications in Neural Networks

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Publisher : American Mathematical Society
ISBN 13 : 1470467658
Total Pages : 186 pages
Book Rating : 4.4/5 (74 download)

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Book Synopsis Ridge Functions and Applications in Neural Networks by : Vugar E. Ismailov

Download or read book Ridge Functions and Applications in Neural Networks written by Vugar E. Ismailov and published by American Mathematical Society. This book was released on 2021-12-17 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have witnessed a growth of interest in the special functions called ridge functions. These functions appear in various fields and under various guises. They appear in partial differential equations (where they are called plane waves), in computerized tomography, and in statistics. Ridge functions are also the underpinnings of many central models in neural network theory. In this book various approximation theoretic properties of ridge functions are described. This book also describes properties of generalized ridge functions, and their relation to linear superpositions and Kolmogorov's famous superposition theorem. In the final part of the book, a single and two hidden layer neural networks are discussed. The results obtained in this part are based on properties of ordinary and generalized ridge functions. Novel aspects of the universal approximation property of feedforward neural networks are revealed. This book will be of interest to advanced graduate students and researchers working in functional analysis, approximation theory, and the theory of real functions, and will be of particular interest to those wishing to learn more about neural network theory and applications and other areas where ridge functions are used.

Selected Topics in Complex Analysis

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Publisher : Springer Science & Business Media
ISBN 13 : 3764373407
Total Pages : 225 pages
Book Rating : 4.7/5 (643 download)

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Book Synopsis Selected Topics in Complex Analysis by : Vladimir Ya. Eiderman

Download or read book Selected Topics in Complex Analysis written by Vladimir Ya. Eiderman and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume opens with a paper by V.P. Havin that presents a comprehensive survey of the work of mathematician S.Ya. Khavinson. It includes a complete bibliography, previously unpublished, of 163 items, and twelve peer-reviewed research and expository papers by leading mathematicians, including the joint paper by Khavinson and T.S. Kuzina. The emphasis is on the usage of tools from functional analysis, potential theory, algebra, and topology.

Ridge Functions

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Publisher : Cambridge University Press
ISBN 13 : 1107124395
Total Pages : 218 pages
Book Rating : 4.1/5 (71 download)

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Book Synopsis Ridge Functions by : Allan Pinkus

Download or read book Ridge Functions written by Allan Pinkus and published by Cambridge University Press. This book was released on 2015-08-07 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the state of the art in the theory of ridge functions, providing a solid theoretical foundation.

Linear Holomorphic Partial Differential Equations and Classical Potential Theory

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Publisher : American Mathematical Soc.
ISBN 13 : 1470437805
Total Pages : 214 pages
Book Rating : 4.4/5 (74 download)

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Book Synopsis Linear Holomorphic Partial Differential Equations and Classical Potential Theory by : Dmitry Khavinson

Download or read book Linear Holomorphic Partial Differential Equations and Classical Potential Theory written by Dmitry Khavinson and published by American Mathematical Soc.. This book was released on 2018-07-09 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why do solutions of linear analytic PDE suddenly break down? What is the source of these mysterious singularities, and how do they propagate? Is there a mean value property for harmonic functions in ellipsoids similar to that for balls? Is there a reflection principle for harmonic functions in higher dimensions similar to the Schwarz reflection principle in the plane? How far outside of their natural domains can solutions of the Dirichlet problem be extended? Where do the continued solutions become singular and why? This book invites graduate students and young analysts to explore these and many other intriguing questions that lead to beautiful results illustrating a nice interplay between parts of modern analysis and themes in “physical” mathematics of the nineteenth century. To make the book accessible to a wide audience including students, the authors do not assume expertise in the theory of holomorphic PDE, and most of the book is accessible to anyone familiar with multivariable calculus and some basics in complex analysis and differential equations.

Sign-based Methods in Linear Statistical Models

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821897768
Total Pages : 252 pages
Book Rating : 4.8/5 (977 download)

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Book Synopsis Sign-based Methods in Linear Statistical Models by : M. V. Boldin

Download or read book Sign-based Methods in Linear Statistical Models written by M. V. Boldin and published by American Mathematical Soc.. This book was released on 1997-04-22 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: For nonparametric statistics, the last half of this century was the time when rank-based methods originated, were vigorously developed, reached maturity, and received wide recognition. The rank-based approach in statistics consists in ranking the observed values and using only the ranks rather than the original numerical data. In fitting relationships to observed data, the ranks of residuals from the fitted dependence are used. The signed-based approach is based on the assumption that random errors take positive or negative values with equal probabilities. Under this assumption, the sign procedures are distribution-free. These procedures are robust to violations of model assumptions, for instance, to even a considerable number of gross errors in observations. In addition, sign procedures have fairly high relative asymptotic efficiency, in spite of the obvious loss of information incurred by the use of signs instead of the corresponding numerical values. In this work, sign-based methods in the framework of linear models are developed. In the first part of the book, there are linear and factor models involving independent observations. In the second part, linear models of time series, primarily autoregressive models, are considered.

Linear and Nonlinear Perturbations of the Operator Div

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821897744
Total Pages : 126 pages
Book Rating : 4.8/5 (977 download)

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Book Synopsis Linear and Nonlinear Perturbations of the Operator Div by : Viktor Grigorʹevich Osmolovskiĭ

Download or read book Linear and Nonlinear Perturbations of the Operator Div written by Viktor Grigorʹevich Osmolovskiĭ and published by American Mathematical Soc.. This book was released on 1997-01-01 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents results onboundary-value problems for L and the theory of nonlinear perturbations of L. Specifically, necessary and sufficient solvability conditions in explicit form are found for various boundary-value problems for the operator L. an analog of the Weyl decomposition is proved.

Ordinary Differential Equations with Constant Coefficient

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821897799
Total Pages : 298 pages
Book Rating : 4.8/5 (977 download)

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Book Synopsis Ordinary Differential Equations with Constant Coefficient by : Serge_ Konstantinovich Godunov

Download or read book Ordinary Differential Equations with Constant Coefficient written by Serge_ Konstantinovich Godunov and published by American Mathematical Soc.. This book was released on 1997-08-19 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the theory of ordinary differential equations with constant coefficients. The exposition is based on ideas developing the Gelfand-Shilov theorem on the polynomial representation of a matrix exponential. Boundary value problems for ordinary equations, Green matrices, Green functions, the Lopatinskii condition, and Lyapunov stability are considered. This volume can be used for practical study of ordinary differential equations using computers. In particular, algorithms and computational procedures, including the orthogonal sweep method, are described. The book also deals with stationary optimal control systems described by systems of ordinary differential equations with constant coefficients. The notions of controllability, observability, and stabilizability are analyzed, and some questions on the matrix Lure-Riccati equations are studied.

Probability Theory

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Publisher : American Mathematical Soc.
ISBN 13 : 0821868667
Total Pages : 362 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Probability Theory by : Anatoli_ I_A_kovlevich Dorogovt_s_ev

Download or read book Probability Theory written by Anatoli_ I_A_kovlevich Dorogovt_s_ev and published by American Mathematical Soc.. This book was released on 2011-06-21 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book of problems is intended for students in pure and applied mathematics. There are problems in traditional areas of probability theory and problems in the theory of stochastic processes, which has wide applications in the theory of automatic control, queuing and reliability theories, and in many other modern science and engineering fields. Answers to most of the problems are given, and the book provides hints and solutions for more complicated problems.

Introduction to Complex Analysis

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821889602
Total Pages : 268 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Introduction to Complex Analysis by : Junjiro Noguchi

Download or read book Introduction to Complex Analysis written by Junjiro Noguchi and published by American Mathematical Soc.. This book was released on 2008-04-09 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes a classical introductory part of complex analysis for university students in the sciences and engineering and could serve as a text or reference book. It places emphasis on rigorous proofs, presenting the subject as a fundamental mathematical theory. The volume begins with a problem dealing with curves related to Cauchy's integral theorem. To deal with it rigorously, the author gives detailed descriptions of the homotopy of plane curves. Since the residue theorem is important in both pure and applied mathematics, the author gives a fairly detailed explanation of how to apply it to numerical calculations; this should be sufficient for those who are studying complex analysis as a tool.

An Introduction to Algebraic Geometry

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Publisher : American Mathematical Soc.
ISBN 13 : 0821811444
Total Pages : 266 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis An Introduction to Algebraic Geometry by : Kenji Ueno

Download or read book An Introduction to Algebraic Geometry written by Kenji Ueno and published by American Mathematical Soc.. This book was released on 1997 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introduction to algebraic geometry allows readers to grasp the fundamentals of the subject with only linear algebra and calculus as prerequisites. After a brief history of the subject, the book introduces projective spaces and projective varieties, and explains plane curves and resolution of their singularities. The volume further develops the geometry of algebraic curves and treats congruence zeta functions of algebraic curves over a finite field. It concludes with a complex analytical discussion of algebraic curves. The author emphasizes computation of concrete examples rather than proofs, and these examples are discussed from various viewpoints. This approach allows readers to develop a deeper understanding of the theorems.

Real Analysis

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821821046
Total Pages : 276 pages
Book Rating : 4.8/5 (21 download)

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Book Synopsis Real Analysis by : Satoru Igari

Download or read book Real Analysis written by Satoru Igari and published by American Mathematical Soc.. This book was released on 1998 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introduction to real analysis is based on a series of lectures by the author at Tohoku University. The text covers real numbers, the notion of general topology, and a brief treatment of the Riemann integral, followed by chapters on the classical theory of the Lebesgue integral on Euclidean spaces; the differentiation theorem and functions of bounded variation; Lebesgue spaces; distribution theory; the classical theory of the Fourier transform and Fourier series; and wavelet theory.

Mathematics of Fractals

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821805374
Total Pages : 104 pages
Book Rating : 4.8/5 (53 download)

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Book Synopsis Mathematics of Fractals by : Masaya Yamaguchi

Download or read book Mathematics of Fractals written by Masaya Yamaguchi and published by American Mathematical Soc.. This book was released on 1997 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims at providing a handy explanation of the notions behind the self-similar sets called "fractals" and "chaotic dynamical systems". The authors emphasize the beautiful relationship between fractal functions (such as Weierstrass's) and chaotic dynamical systems; these nowhere-differentiable functions are generating functions of chaotic dynamical systems. These functions are shown to be in a sense unique solutions of certain boundary problems. The last chapter of the book treats harmonic functions on fractal sets.

Mathematics of Information and Coding

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821842560
Total Pages : 306 pages
Book Rating : 4.8/5 (425 download)

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Book Synopsis Mathematics of Information and Coding by : Te Sun Han

Download or read book Mathematics of Information and Coding written by Te Sun Han and published by American Mathematical Soc.. This book was released on 2002 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to provide engineering and/or statistics students, communications engineers, and mathematicians with the firm theoretic basis of source coding (or data compression) in information theory. Although information theory consists of two main areas, source coding and channel coding, the authors choose here to focus only on source coding. The reason is that, in a sense, it is more basic than channel coding, and also because of recent achievements in source coding and compression. An important feature of the book is that whenever possible, the authors describe universal coding methods, i.e., the methods that can be used without prior knowledge of the statistical properties of the data. The authors approach the subject of source coding from the very basics to the top frontiers in an intuitively transparent, but mathematically sound, manner. The book serves as a theoretical reference for communication professionals and statisticians specializing in information theory. It will also serve as an excellent introductory text for advanced-level and graduate students taking elementary or advanced courses in telecommunications, electrical engineering, statistics, mathematics, and computer science.

Characters of Finite Groups. Part 1

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Publisher : American Mathematical Soc.
ISBN 13 : 9780821897829
Total Pages : 414 pages
Book Rating : 4.8/5 (978 download)

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Book Synopsis Characters of Finite Groups. Part 1 by : IA. G. Berkovich E. M. Zhmud'

Download or read book Characters of Finite Groups. Part 1 written by IA. G. Berkovich E. M. Zhmud' and published by American Mathematical Soc.. This book was released on 1997-12-02 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses character theory and its applications to finite groups. The work places the subject within the reach of people with a relatively modest mathematical background. The necessary background exceeds the standard algebra course with respect only to finite groups. Starting with basic notions and theorems in character theory, the authors present a variety of results on the properties of complex-valued characters and applications to finite groups. The main themes are degrees and kernels of irreducible characters, the class number and the number of nonlinear irreducible characters, values of irreducible characters, characterizations and generalizations of Frobenius groups, and generalizations and applications of monomial groups. The presentation is detailed, and many proofs of known results are new. Most of the results in the book are presented in monograph form for the first time. Numerous exercises offer additional information on the topics and help readers to understand the main concepts and results.

Elliptic Functions and Elliptic Integrals

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Publisher : American Mathematical Society
ISBN 13 : 0821813463
Total Pages : 198 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Elliptic Functions and Elliptic Integrals by : Viktor Prasolov

Download or read book Elliptic Functions and Elliptic Integrals written by Viktor Prasolov and published by American Mathematical Society. This book was released on 1997-09-16 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the geometry and arithmetic of elliptic curves and to elliptic functions with applications to algebra and number theory. It includes modern interpretations of some famous classical algebraic theorems such as Abel's theorem on the lemniscate and Hermite's solution of the fifth degree equation by means of theta functions. Suitable as a text, the book is self-contained and assumes as prerequisites only the standard one-year courses of algebra and analysis.