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The aim of this monograph is to give a thorough and self-contained account of functions of (generalized) bounded variation, the methods connected with their study, their relations to other important function classes, and their applications to various problems arising in Fourier analysis and nonlinear analysis. In the first part the basic facts about spaces of functions of bounded variation and related spaces are collected, the main ideas which are useful in studying their properties are presented, and a comparison of their importance and suitability for applications is provided, with a particular emphasis on illustrative examples and counterexamples. The second part is concerned with (sometimes quite surprising) properties of nonlinear composition and superposition operators in such spaces. Moreover, relations with Riemann-Stieltjes integrals, convergence tests for Fourier series, and applications to nonlinear integral equations are discussed. The only prerequisite for understanding this book is a modest background in real analysis, functional analysis, and operator theory. It is addressed to non-specialists who want to get an idea of the development of the theory and its applications in the last decades, as well as a glimpse of the diversity of the directions in which current research is moving. Since the authors try to take into account recent results and state several open problems, this book might also be a fruitful source of inspiration for further research.
Functions of bounded variation. --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables --- Boundary Value Problem. --- Bounded Variation. --- Continuity Properties. --- Fourier Analysis. --- Monotonicity Properties. --- Nonlinear Composition Operators. --- Nonlinear Integral Equation.
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Functions of bounded variation represent an important class of functions. Studying their Fourier transforms is a valuable means of revealing their analytic properties. Moreover, it brings to light new interrelations between these functions and the real Hardy space and, correspondingly, between the Fourier transform and the Hilbert transform. This book is divided into two major parts, the first of which addresses several aspects of the behavior of the Fourier transform of a function of bounded variation in dimension one. In turn, the second part examines the Fourier transforms of multivariate functions with bounded Hardy variation. The results obtained are subsequently applicable to problems in approximation theory, summability of the Fourier series and integrability of trigonometric series. .
Functions of bounded variation. --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables --- Harmonic analysis. --- Abstract Harmonic Analysis. --- Analysis (Mathematics) --- Functions, Potential --- Potential functions --- Banach algebras --- Calculus --- Mathematical analysis --- Mathematics --- Bessel functions --- Fourier series --- Harmonic functions --- Time-series analysis
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Operator theory. --- Geometric function theory. --- Opérateurs, Théorie des. --- Fonctions, Théorie géométrique des. --- Functions of bounded variation. --- Interpolation. --- Functions of bounded variation --- Operator theory --- Interpolation --- Approximation theory --- Numerical analysis --- Functional analysis --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables
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Structured population models are transport-type equations often applied to describe evolution of heterogeneous populations of biological cells, animals or humans, including phenomena such as crowd dynamics or pedestrian flows. This book introduces the mathematical underpinnings of these applications, providing a comprehensive analytical framework for structured population models in spaces of Radon measures. The unified approach allows for the study of transport processes on structures that are not vector spaces (such as traffic flow on graphs) and enables the analysis of the numerical algorithms used in applications. Presenting a coherent account of over a decade of research in the area, the text includes appendices outlining the necessary background material and discusses current trends in the theory, enabling graduate students to jump quickly into research.
Population --- Functions of bounded variation. --- Lipschitz spaces. --- Metric spaces. --- Radon measures. --- Biology --- Mathematical models. --- Biological models --- Biomathematics --- Measures, Radon --- Measure theory --- Vector-valued measures --- Spaces, Metric --- Generalized spaces --- Set theory --- Topology --- Hölder spaces --- Function spaces --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables
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Algebraic topology --- Homology theory. --- Functions of bounded variation. --- Topological spaces. --- Homologie --- Fonctions à variation bornée --- Espaces topologiques --- 51 <082.1> --- Mathematics--Series --- Derived categories (Mathematics) --- Homology theory --- Fonctions à variation bornée --- Functions of bounded variation --- Topological spaces --- Spaces, Topological --- Cohomology theory --- Contrahomology theory --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables --- Abelian categories --- Functional analysis --- Analyse fonctionnelle --- Homologie. --- Groupes topologiques. --- Cohomologie. --- Topological groups --- Algèbre homologique. --- Algebra, Homological
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Minimal surfaces. --- Functions of bounded variation. --- Surfaces minimales --- Fonctions à variation bornée --- Minimal surfaces --- Functions of bounded variation --- 514.76 --- Surfaces, Minimal --- Maxima and minima --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables --- Geometry of differentiable manifolds and of their submanifolds --- 514.76 Geometry of differentiable manifolds and of their submanifolds --- Fonctions à variation bornée
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Calculus of variations. --- Functions of bounded variation. --- 517.57 --- Harmonic functions and their generalizations. Subharmonic functions. Polyharmonic functions. Plurisubharmonic functions --- 517.57 Harmonic functions and their generalizations. Subharmonic functions. Polyharmonic functions. Plurisubharmonic functions --- Calculus of variations --- Functions of bounded variation --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables --- Isoperimetrical problems --- Variations, Calculus of --- Maxima and minima
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Functionals involving both volume and surface energies have a number of applications ranging from Computer Vision to Fracture Mechanics. In order to tackle numerical and dynamical problems linked to such functionals many approximations by functionals defined on smooth functions have been proposed (using high-order singular perturbations, finite-difference or non-local energies, etc.) The purpose of this book is to present a global approach to these approximations using the theory of gamma-convergence and of special functions of bounded variation. The book is directed to PhD students and researchers in calculus of variations, interested in approximation problems with possible applications.
Calculus of variations --- Functions of bounded variation --- Convergence --- Perturbation (Mathematics) --- Calcul des variations --- Convergentie --- Fonctions à variation bornée --- Functies met begrensde variatie --- Perturbatie (Wiskunde) --- Perturbation (Mathématiques) --- Variatieberekening --- Partial differential equations. --- Numerical analysis. --- Mathematical physics. --- Partial Differential Equations. --- Numerical Analysis. --- Theoretical, Mathematical and Computational Physics. --- Physical mathematics --- Physics --- Mathematical analysis --- Partial differential equations --- Mathematics --- Functions of bounded variation. --- Convergence. --- Calculus of variations. --- Isoperimetrical problems --- Variations, Calculus of --- Maxima and minima --- Functions --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables
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"This book introduces researchers and students to the concepts and generalized linear models for analyzing quantitative random variables that have one or more bounds. Examples of bounded variables include the percentage of a population eligible to vote (bounded from 0 to 100), or reaction time in milliseconds (bounded below by 0). The human sciences deal in many variables that are bounded. Ignoring bounds can result in misestimation and improper statistical inference. Michael Smithson and Yiyun Shou's book brings together material on the analysis of limited and bounded variables that is scattered across the literature in several disciplines, and presents it in a style that is both more accessible and up-to-date. The authors provide worked examples in each chapter using real datasets from a variety of disciplines. The software used for the examples include R, SAS, and Stata. The data, software code, and detailed explanations of the example models are available on an accompanying website at www.sagepub.com/smithsonshou"--
Linear models (Statistics) --- Random variables --- Functions of bounded variation --- Quantitative research --- Data analysis (Quantitative research) --- Exploratory data analysis (Quantitative research) --- Quantitative analysis (Research) --- Quantitative methods (Research) --- Research --- Bounded variables, Functions of --- Bounded variation, Functions of --- BV functions --- Functions of bounded variables --- Functions of real variables --- Chance variables --- Stochastic variables --- Probabilities --- Variables (Mathematics) --- Models, Linear (Statistics) --- Mathematical models --- Mathematical statistics --- Statistics --- #SBIB:303H10 --- #SBIB:303H520 --- Methoden en technieken: algemene handboeken en reeksen --- Methoden sociale wetenschappen: techniek van de analyse, algemeen --- Functions of bounded variation. --- Linear models (Statistics). --- Quantitative research. --- Random variables. --- Multivariate analysis.
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