# several real variables

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## Functions Of Several Real Variables

**Author :**Martin A. Moskowitz

**ISBN :**9789814299268

**Genre :**Mathematics

**File Size :**61. 40 MB

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This book begins with the basics of the geometry and topology of Euclidean space and continues with the main topics in the theory of functions of several real variables including limits, continuity, differentiation and integration. All topics and in particular, differentiation and integration, are treated in depth and with mathematical rigor. The classical theorems of differentiation and integration are proved in detail and many of them with novel proofs. The authors develop the theory in a logical sequence building one theorem upon the other, enriching the development with numerous explanatory remarks and historical footnotes. A number of well chosen illustrative examples and counter-examples clarify the theory and teach the reader how to apply it to solve problems in mathematics and other sciences and economics. Each of the chapters concludes with groups of exercises and problems, many of them with detailed solutions while others with hints or final answers. More advanced topics, such as Morse's lemma, Brouwer's fixed point theorem, Picard's theorem and the Weierstrass approximation theorem are discussed in stared sections.

## Several Real Variables

**Author :**Shmuel Kantorovitz

**ISBN :**9783319279565

**Genre :**Mathematics

**File Size :**73. 91 MB

**Format :**PDF, ePub

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This undergraduate textbook is based on lectures given by the author on the differential and integral calculus of functions of several real variables. The book has a modern approach and includes topics such as: •The p-norms on vector space and their equivalence •The Weierstrass and Stone-Weierstrass approximation theorems •The differential as a linear functional; Jacobians, Hessians, and Taylor's theorem in several variables •The Implicit Function Theorem for a system of equations, proved via Banach’s Fixed Point Theorem •Applications to Ordinary Differential Equations •Line integrals and an introduction to surface integrals This book features numerous examples, detailed proofs, as well as exercises at the end of sections. Many of the exercises have detailed solutions, making the book suitable for self-study. Several Real Variables will be useful for undergraduate students in mathematics who have completed first courses in linear algebra and analysis of one real variable.

## Functions Of Several Real Variables

**Author :**Moskowitz Martin

**ISBN :**9789813100916

**Genre :**Mathematics

**File Size :**69. 93 MB

**Format :**PDF, Docs

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This book begins with the basics of the geometry and topology of Euclidean space and continues with the main topics in the theory of functions of several real variables including limits, continuity, differentiation and integration. All topics and in particular, differentiation and integration, are treated in depth and with mathematical rigor. The classical theorems of differentiation and integration such as the Inverse and Implicit Function theorems, Lagrange's multiplier rule, Fubini's theorem, the change of variables formula, Green's, Stokes' and Gauss' theorems are proved in detail and many of them with novel proofs. The authors develop the theory in a logical sequence building one result upon the other, enriching the development with numerous explanatory remarks and historical footnotes. A number of well chosen illustrative examples and counter-examples clarify matters and teach the reader how to apply these results and solve problems in mathematics, the other sciences and economics.Each of the chapters concludes with groups of exercises and problems, many of them with detailed solutions while others with hints or final answers. More advanced topics, such as Morse's lemma, Sard's theorem , the Weierstrass approximation theorem, the Fourier transform, Vector fields on spheres, Brouwer's fixed point theorem, Whitney's embedding theorem, Picard's theorem, and Hermite polynomials are discussed in stared sections.

## Investigations On The Theory Of Functions Of Several Real Variables And The Approximation Of Functions

**Author :**Sergej L. Sobolev

**ISBN :**LCCN:87031832

**Genre :**Approximation theory

**File Size :**21. 7 MB

**Format :**PDF, Kindle

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## Theory And Applications Of Differentiable Functions Of Several Variables

**Author :**Sergeĭ Mikhaĭlovich Nikolʹskiĭ

**ISBN :**0821831178

**Genre :**Mathematics

**File Size :**44. 70 MB

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## Functions Of A Real Variable

**Author :**N. Bourbaki

**ISBN :**9783642593154

**Genre :**Mathematics

**File Size :**62. 85 MB

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This is an English translation of Bourbaki’s Fonctions d'une Variable Réelle. Coverage includes: functions allowed to take values in topological vector spaces, asymptotic expansions are treated on a filtered set equipped with a comparison scale, theorems on the dependence on parameters of differential equations are directly applicable to the study of flows of vector fields on differential manifolds, etc.

## Holomorphic Functions And Integral Representations In Several Complex Variables

**Author :**R. Michael Range

**ISBN :**038796259X

**Genre :**Mathematics

**File Size :**54. 77 MB

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The subject of this book is Complex Analysis in Several Variables. This text begins at an elementary level with standard local results, followed by a thorough discussion of the various fundamental concepts of "complex convexity" related to the remarkable extension properties of holomorphic functions in more than one variable. It then continues with a comprehensive introduction to integral representations, and concludes with complete proofs of substantial global results on domains of holomorphy and on strictly pseudoconvex domains inC", including, for example, C. Fefferman's famous Mapping Theorem. The most important new feature of this book is the systematic inclusion of many of the developments of the last 20 years which centered around integral representations and estimates for the Cauchy-Riemann equations. In particu lar, integral representations are the principal tool used to develop the global theory, in contrast to many earlier books on the subject which involved methods from commutative algebra and sheaf theory, and/or partial differ ential equations. I believe that this approach offers several advantages: (1) it uses the several variable version of tools familiar to the analyst in one complex variable, and therefore helps to bridge the often perceived gap between com plex analysis in one and in several variables; (2) it leads quite directly to deep global results without introducing a lot of new machinery; and (3) concrete integral representations lend themselves to estimations, therefore opening the door to applications not accessible by the earlier methods.

## Real Variable Methods In Harmonic Analysis

**Author :**Alberto Torchinsky

**ISBN :**9780486435084

**Genre :**Mathematics

**File Size :**59. 11 MB

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An exploration of the unity of several areas in harmonic analysis, this text emphasizes real-variable methods. Discusses classical Fourier series, summability, norm convergence, and conjugate function. Examines the Hardy-Littlewood maximal function, the Calderón-Zygmund decomposition, the Hilbert transform and properties of harmonic functions, the Littlewood-Paley theory, more. 1986 edition.

## Theory And Applications Of Differentiable Functions Of Several Variables

**Author :**Sergei Mikhailovich Nicol'skii

**ISBN :**0821803387

**Genre :**Differentiable functions

**File Size :**34. 13 MB

**Format :**PDF

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This book is dedicated to Sergei Mikhailovich Nikolskii on the occasion of his eighty-fifth birthday. The collection contains new results on the following topics: approximation of functions, imbedding theory, interpolation of function spaces, convergence of series in trigonometric and general orthogonal systems, quasilinear elliptic problems, spectral theory of nonselfadjoint operators, asymptotic properties of pseudodifferential operators, and methods of approximate solution of Laplace's equation.

## Mathematics For Scientists

**Author :**Thor Anders Bak

**ISBN :**MINN:31951D019334015

**Genre :**Mathematics

**File Size :**31. 13 MB

**Format :**PDF, Mobi

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