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This monograph deals with methods of studying multidimensional inverse problems for kinetic and other evolution equations, in particular transfer equations. The methods used are applied to concrete inverse problems, especially multidimensional inverse problems applicable in linear and nonlinear statements. A significant part of the book contains formulas and relations for solving inverse problems, including formulas for the solution and coefficients of kinetic equations, differential-difference equations, nonlinear evolution equations, and second order equations.
Evolution equations. --- Inverse problems (Differential equations) --- Differential equations --- Evolutionary equations --- Equations, Evolution --- Equations of evolution --- Coefficients. --- Concrete Inverse Problems. --- Differential-difference Equations. --- Kinetic Evolution Equations. --- Linear Statements. --- Multidimensional Inverse Problems. --- Nonlinear Evolution Equations. --- Nonlinear Statements. --- Second Order Equations. --- Transfer Equations.
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This monograph covers dynamical inverse problems, that is problems whose data are the values of wave fields. It deals with the problem of determination of one or more coefficients of a hyperbolic equation or a system of hyperbolic equations. The desired coefficients are functions of point. Most attention is given to the case where the required functions depend only on one coordinate. The first chapter of the book deals mainly with methods of solution of one-dimensional inverse problems. The second chapter focuses on scalar inverse problems of wave propagation in a layered medium. In the final chapter inverse problems for elasticity equations in stratified media and acoustic equations for moving media are given.
Wave-motion, Theory of. --- Undulatory theory --- Mechanics --- Acoustic Equations. --- Coefficients. --- Determination. --- Dynamical Inverse Problems. --- Elasticity Equations. --- Functions of Point. --- Hyperbolic Equations. --- One-dimensional Inverse Problems. --- Scalar Inverse Problems. --- Wave Fields. --- Wave Propagation.
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The various types of special functions have become essential tools for scientists and engineers. One of the important classes of special functions is of the hypergeometric type. It includes all classical hypergeometric functions such as the well-known Gaussian hypergeometric functions, the Bessel, Macdonald, Legendre, Whittaker, Kummer, Tricomi and Wright functions, the generalized hypergeometric functions ? Fq , Meijer's G -function, Fox's H -function, etc. Application of the new special functions allows one to increase considerably the number of problems whose solutions are found in a closed
Legendre's functions. --- Spherical harmonics. --- Functions, Potential --- Potential functions --- Harmonic analysis --- Harmonic functions --- Functions, Legendre's --- Legendre's coefficients --- Legendre's equation --- Spherical harmonics --- Legendre's functions --- 517.58 --- 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.
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