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FOURIER ANALYSIS --- Moment problems (Mathematics) --- Exponential functions --- Control theory --- Distributed parameter systems --- Fourier analysis --- 517.98 --- Calculus, Operational --- Analysis, Fourier --- Mathematical analysis --- Functions, Exponential --- Hyperbolic functions --- Exponents (Algebra) --- Logarithms --- Transcendental functions --- Systems, Distributed parameter --- Engineering systems --- System analysis --- Dynamics --- Machine theory --- 517.98 Functional analysis and operator theory --- Functional analysis and operator theory
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Many important applications in global optimization, algebra, probability and statistics, applied mathematics, control theory, financial mathematics, inverse problems, etc. can be modeled as a particular instance of the Generalized Moment Problem (GMP). This book introduces a new general methodology to solve the GMP when its data are polynomials and basic semi-algebraic sets. This methodology combines semidefinite programming with recent results from real algebraic geometry to provide a hierarchy of semidefinite relaxations converging to the desired optimal value. Applied on appropriat
Moments method (Statistics) --- Polynomials. --- Algebra --- Method of moments (Statistics) --- Mathematical statistics --- Distribution (Probability theory) --- Geometry, Algebraic --- Mathematical optimization --- Moment problems (Mathematics) --- Polynomials --- Calculus, Operational --- Optimization (Mathematics) --- Optimization techniques --- Optimization theory --- Systems optimization --- Mathematical analysis --- Maxima and minima --- Operations research --- Simulation methods --- System analysis --- Algebraic geometry --- Geometry
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This book deals with the concept of moments, and how they find application in subsurface hydrologic problems-particularly those dealing with solute transport. This book will be very valuable to researchers who are beginning to learn about moment analysis, and will also be of interest to advanced researchers as well. Both temporal and spatial moments are dealt with in some detail for a wide variety of problems. Several examples using experimental data, both from laboratory columns and field experiments, are provided to give the readers a clear idea about the scope of this method. Apart from conventional uses of moments for solute transport problems, this book contains chapters dealing with use of moments in interval computing, vapour phase transport applications, transfer functions to subsurface tile drains, and construction of breakthrough curves from knowledge of moments.
Soils --- Transformations (Mathematics) --- Moment problems (Mathematics) --- Solute movement. --- Calculus, Operational --- Algorithms --- Differential invariants --- Geometry, Differential --- Movement of solutes in soils --- Soil physics --- Hydraulic engineering. --- Differential equations, partial. --- Geography. --- Hydrogeology. --- Hydrology/Water Resources. --- Partial Differential Equations. --- Earth Sciences, general. --- Cosmography --- Earth sciences --- World history --- Partial differential equations --- Engineering, Hydraulic --- Engineering --- Fluid mechanics --- Hydraulics --- Shore protection --- Hydrology. --- Partial differential equations. --- Earth sciences. --- Geosciences --- Environmental sciences --- Physical sciences --- Aquatic sciences --- Hydrography --- Water --- Geohydrology --- Geology --- Hydrology --- Groundwater
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Schur analysis originates with an 1917 article of Schur where he associated to a function, which is analytic and contractive in the open unit disk, a sequence, finite or infinite, of numbers in the open unit disk, called Schur coefficients. In signal processing, they are often named reflection coefficients. Under the word "Schur analysis" one encounters a variety of problems related to Schur functions, such as interpolation problems, moment problems, the study of the relationships between the Schur coefficients and the properties of the function, or the study of underlying operators. Such questions are also considered for some generalizations of Schur functions. Furthermore, there is an extension of the notion of a Schur function for functions that are analytic and have a positive real part in the open upper half-plane; these functions are called Carathéodory functions. This volume is almost entirely dedicated to the analysis of Schur and Carathéodory functions and to the solutions of problems for these classes.
Inverse problems (Differential equations) --- Linear operators. --- Toeplitz operators. --- Hankel operators. --- Wiener-Hopf operators. --- Interpolation. --- Schur functions. --- Moment problems (Mathematics) --- Calculus, Operational --- S-functions --- Schur's functions --- Holomorphic functions --- Approximation theory --- Numerical analysis --- Operators, Wiener-Hopf --- Factorization of operators --- Linear operators --- Operators, Hankel --- Integral operators --- Operators, Toeplitz --- Linear maps --- Maps, Linear --- Operators, Linear --- Operator theory --- Differential equations --- Operator theory. --- System theory. --- Functional analysis. --- Operator Theory. --- Systems Theory, Control. --- Functional Analysis. --- Functional calculus --- Calculus of variations --- Functional equations --- Integral equations --- Functional analysis --- Systems, Theory of --- Systems science --- Science --- Philosophy --- Systems theory.
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The origins of Schur analysis lie in a 1917 article by Issai Schur in which he constructed a numerical sequence to correspond to a holomorphic contractive function on the unit disk. These sequences are now known as Schur parameter sequences. Schur analysis has grown significantly since its beginnings in the early twentieth century and now encompasses a wide variety of problems related to several classes of holomorphic functions and their matricial generalizations. These problems include interpolation and moment problems as well as Schur parametrization of particular classes of contractive or nonnegative Hermitian block matrices. This book is primarily devoted to topics related to matrix versions of classical interpolation and moment problems. The major themes include Schur analysis of nonnegative Hermitian block Hankel matrices and the construction of Schur-type algorithms. This book also covers a number of recent developments in orthogonal rational matrix functions, matrix-valued Carathéodory functions and maximal weight solutions for particular matricial moment problems on the unit circle.
Differential equations -- Numerical solutions. --- Differential equations. --- Integral equations -- Numerical solutions. --- Interpolation --- Schur functions --- Inverse problems (Differential equations) --- Engineering & Applied Sciences --- Mathematics --- Physical Sciences & Mathematics --- Applied Mathematics --- Calculus --- Interpolation. --- Schur functions. --- Moment problems (Mathematics) --- S-functions --- Schur's functions --- Mathematics. --- Functions of complex variables. --- Integral transforms. --- Operational calculus. --- Operator theory. --- Operator Theory. --- Integral Transforms, Operational Calculus. --- Functions of a Complex Variable. --- Calculus, Operational --- Holomorphic functions --- Approximation theory --- Numerical analysis --- Integral Transforms. --- Complex variables --- Elliptic functions --- Functions of real variables --- Transform calculus --- Integral equations --- Transformations (Mathematics) --- Functional analysis --- Operational calculus --- Differential equations --- Electric circuits
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Moment Theory is not a new subject; however, in classical treatments, the ill-posedness of the problem is not taken into account - hence this monograph. Assuming a "true" solution to be uniquely determined by a sequence of moments (given as integrals) of which only finitely many are inaccurately given, the authors describe and analyze several regularization methods and derive stability estimates. Mathematically, the task often consists in the reconstruction of an analytic or harmonic function, as is natural from concrete applications discussed (e.g. inverse heat conduction problems, Cauchy's problem for the Laplace equation, gravimetry). The book can be used in a graduate or upper undergraduate course in Inverse Problems, or as supplementary reading for a course on Applied Partial Differential Equations.
Moment problems (Mathematics) --- Inverse problems (Differential equations) --- Potential theory (Mathematics) --- Heat --- Conduction --- Mathematical models --- Functions of complex variables. --- Potential theory (Mathematics). --- Partial differential equations. --- Integral transforms. --- Operational calculus. --- Integral equations. --- Operator theory. --- Functions of a Complex Variable. --- Potential Theory. --- Partial Differential Equations. --- Integral Transforms, Operational Calculus. --- Integral Equations. --- Operator Theory. --- Functional analysis --- Equations, Integral --- Functional equations --- Operational calculus --- Differential equations --- Electric circuits --- Integral equations --- Transform calculus --- Transformations (Mathematics) --- Partial differential equations --- Green's operators --- Green's theorem --- Potential functions (Mathematics) --- Potential, Theory of --- Mathematical analysis --- Mechanics --- Complex variables --- Elliptic functions --- Functions of real variables --- Heat - Conduction - Mathematical models
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Continued fractions --- Functions, Orthogonal --- Moment problems (Mathematics) --- 517.52 --- 517.58 --- 517.52 Series and sequences --- Series and sequences --- Calculus, Operational --- Fractions, Continued --- Series --- Processes, Infinite --- Orthogonal functions --- Fourier analysis --- Series, Orthogonal --- 517.58 Special functions. Hyperbolic functions. Euler integrals. Gamma functions. Elliptic functions and integrals. Bessel functions. Other cylindrical functions. Spherical functions. Legendre polynomials. Orthogonal polynomials. Chebyshev polynomials. --- Special functions. Hyperbolic functions. Euler integrals. Gamma functions. Elliptic functions and integrals. Bessel functions. Other cylindrical functions. Spherical functions. Legendre polynomials. Orthogonal polynomials. Chebyshev polynomials. --- Mathematical analysis --- Numerical approximation theory
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