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Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.
Seismic reflection method. --- Scattering (Mathematics) --- Linear operators --- Generalized inverses.
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Algebra --- Matrices --- Matrices. --- Linear operators --- Opérateurs linéaires --- Generalized inverses --- Inverses généralisés --- Inverses généralisés. --- Opérateurs linéaires --- Generalized inverses. --- Inverses généralisés --- Algebre lineaire --- Methodes variationnelles --- Determinants
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This book addresses selected topics in the theory of generalized inverses. Following a discussion of the “reverse order law” problem and certain problems involving completions of operator matrices, it subsequently presents a specific approach to solving the problem of the reverse order law for {1} -generalized inverses. Particular emphasis is placed on the existence of Drazin invertible completions of an upper triangular operator matrix; on the invertibility and different types of generalized invertibility of a linear combination of operators on Hilbert spaces and Banach algebra elements; on the problem of finding representations of the Drazin inverse of a 2x2 block matrix; and on selected additive results and algebraic properties for the Drazin inverse. In addition to the clarity of its content, the book discusses the relevant open problems for each topic discussed. Comments on the latest references on generalized inverses are also included. Accordingly, the book will be useful for graduate students, PhD students and researchers, but also for a broader readership interested in these topics.
Mathematics. --- Matrix theory. --- Algebra. --- Linear and Multilinear Algebras, Matrix Theory. --- Linear operators --- Generalized inverses. --- Generalized inverses of linear operators --- Inverses of linear operators, Generalized --- Matrix inversion --- Mathematics --- Mathematical analysis
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Most of the existing monographs on generalized inverses are based on linear algebra tools and geometric methods of Banach (Hilbert) spaces to introduce generalized inverses of complex matrices and operators and their related applications, or focus on generalized inverses of matrices over special rings like division rings and integral domains, and does not include the results in general algebraic structures such as arbitrary rings, semigroups and categories, which are precisely the most general cases. In this book, five important generalized inverses are introduced in these algebraic structures. Moreover, noting that the (pseudo) core inverse was introduced in the last decade and has attracted much attention, this book also covers the very rich research results on it, so as to be a necessary supplement to the existing monographs. This book starts with decompositions of matrices, introduces the basic properties of generalized inverses of matrices, and then discusses generalized inverses of elements in rings and semigroups, as well as morphisms in categories. The algebraic nature of generalized inverses is presented, and the behavior of generalized inverses are related to the properties of the algebraic system. Scholars and graduate students working on the theory of rings, semigroups and generalized inverses of matrices and operators will find this book helpful.
Linear operators --- Generalized inverses. --- Operadors lineals --- Associative rings. --- Associative algebras. --- Group theory. --- Associative Rings and Algebras. --- Group Theory and Generalizations.
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Linear operators --- Opérateurs linéaires --- Matrices --- Generalized inverses --- Inverses généralisés. --- Opérateurs linéaires --- Inverses généralisés.
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Matrices --- Linear operators --- Opérateurs linéaires --- Generalized inverses --- Inverses généralisés --- Opérateurs linéaires --- Inverses généralisés
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Operator theory --- 517.983 --- 519.6 --- 681.3*G13 --- Linear operators. Linear operator equations --- Computational mathematics. Numerical analysis. Computer programming --- Numerical linear algebra: conditioning; determinants; Eigenvalues; error analysis; linear systems; matrix inversion; pseudoinverses; sparse and very largesystems --- Approximation theory. --- Hilbert space. --- Linear operators --- Generalized inverses. --- 681.3*G13 Numerical linear algebra: conditioning; determinants; Eigenvalues; error analysis; linear systems; matrix inversion; pseudoinverses; sparse and very largesystems --- 519.6 Computational mathematics. Numerical analysis. Computer programming --- 517.983 Linear operators. Linear operator equations --- Approximation theory --- Hilbert space --- Generalized inverses of linear operators --- Inverses of linear operators, Generalized --- Matrix inversion --- Banach spaces --- Hyperspace --- Inner product spaces --- Theory of approximation --- Functional analysis --- Functions --- Polynomials --- Chebyshev systems --- Generalized inverses
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Matrix inversion --- 512.64 --- Inverse matrices --- Inverse of a matrix --- Inversion, Matrix --- Linear operators --- Matrices --- Linear and multilinear algebra. Matrix theory --- Generalized inverses --- Matrix inversion. --- 512.64 Linear and multilinear algebra. Matrix theory
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Numerical approximation theory --- Matrix inversion --- Transformations (Mathematics) --- Matrices --- Transformations (Mathématiques) --- Inversion --- 512.64 --- Algorithms --- Differential invariants --- Geometry, Differential --- Inverse matrices --- Inverse of a matrix --- Inversion, Matrix --- Linear operators --- Linear and multilinear algebra. Matrix theory --- Generalized inverses --- Matrix inversion. --- Transformations (Mathematics). --- 512.64 Linear and multilinear algebra. Matrix theory --- MATRIX INVERSION --- Opérateurs linéaires --- Inverses généralisés --- Opérateurs linéaires --- Inverses généralisés
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