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Families of exponentials : the method of moments in controllability problems for distributed parameter systems.
Authors: ---
ISBN: 0521452430 9780521452434 Year: 1995 Publisher: Cambridge Cambridge University press


Book
Moments, positive polynomials and their applications
Authors: ---
ISSN: 20411677 ISBN: 1282760009 9786612760006 1848164467 9781848164468 6612760001 1848164459 9781848164451 Year: 2010 Volume: 1 Publisher: London Singapore Imperial College Press Distributed by World Scientific Pub. Co.

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Abstract

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

Moment Analysis for Subsurface Hydrologic Applications
Authors: ---
ISBN: 128094370X 9786610943708 1402057520 1402057512 9048174384 Year: 2007 Publisher: Dordrecht : Springer Netherlands : Imprint: Springer,

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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.

Interpolation, Schur Functions and Moment Problems
Authors: ---
ISBN: 1280613173 9786610613175 3764375477 3764375469 Year: 2006 Publisher: Basel : Birkhäuser Basel : Imprint: Birkhäuser,

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Abstract

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.


Book
Interpolation, Schur functions and moment problems II
Authors: ---
ISBN: 3034807422 303480427X 9786613937483 3034804288 1283625032 Year: 2012 Volume: v. 226 Publisher: Basel : Springer Basel : Imprint: Birkhäuser,

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Abstract

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.

Moment theory and some inverse problems in potential theory and heat conduction
Authors: --- ---
ISSN: 00758434 ISBN: 3540440062 3540456589 9783540440062 Year: 2002 Volume: 1792 Publisher: Berlin Springer-Verlag

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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.

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