Geometric asymptotics for nonlinear PDE. I
著者
書誌事項
Geometric asymptotics for nonlinear PDE. I
（Translations of mathematical monographs, v. 202）
American Mathematical Society, c2001
- タイトル別名
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Geometricheskii asimptotiki dlia nelineinykh uravnenii v chastnykh proizvodnykh
Геометрические асимптотики для нелинейных уравнений в частных производных
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注記
Bibliography: p. 275-285
Translation of : Геометрические асимптотики для нелинейных уравнений в частных производных
内容説明・目次
内容説明
The study of asymptotic solutions to nonlinear systems of partial differential equations is a very powerful tool in the analysis of such systems and their applications in physics, mechanics, and engineering. In the present book, the authors propose a new powerful method of asymptotic analysis of solutions, which can be successfully applied in the case of the so-called 'smoothed shock waves', i.e., nonlinear waves which vary fast in a neighborhood of the front and slowly outside of this neighborhood. The proposed method, based on the study of geometric objects associated to the front, can be viewed as a generalization of the geometric optics (or WKB) method for linear equations. This volume offers to a broad audience a simple and accessible presentation of this new method.The authors present many examples originating from problems of hydrodynamics, nonlinear optics, plasma physics, mechanics of continuum, and theory of phase transitions (problems of free boundary). In the examples, characterized by smoothing of singularities due to dispersion or diffusion, asymptotic solutions in the form of distorted solitons, kinks, breathers, or smoothed shock waves are constructed. By a unified rule, a geometric picture is associated with each physical problem that allows for obtaining tractable asymptotic formulas and provides a geometric interpretation of the physical process. Included in this book are many figures illustrating the various physical effects.
目次
Introduction Waves in one-dimensional nonlinear media Nonlinear waves in multidimensional media Asymptotic solutions of some pseudodifferential equations and dynamical systems with small dispersion Problems with a free boundary Multi-phase asymptotic solutions Asymptotics of stationary solutions to the Navier-Stokes equations describing stretched vortices List of equations Bibliography.
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