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Radio waves --- Stochastic processes --- Ondes radioélectriques --- Processus stochastiques --- Mathematics --- Mathématiques --- Ondes radioélectriques --- Mathématiques --- Radio waves - Mathematics
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Waves --- Scattering (Physics) --- Surfaces (Physics) --- Mathematics --- 543.08 --- 517.98 --- Analytical measurement --- Functional analysis and operator theory --- 517.98 Functional analysis and operator theory --- 543.08 Analytical measurement --- Waves - Mathematics --- Scattering (Physics) - Mathematics --- Surfaces (Physics) - Mathematics
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The present Cime volume includes four lectures by Bressan, Serre, Zumbrun and Williams and an appendix with a Tutorial on Center Manifold Theorem by Bressan. Bressan’s notes start with an extensive review of the theory of hyperbolic conservation laws. Then he introduces the vanishing viscosity approach and explains clearly the building blocks of the theory in particular the crucial role of the decomposition by travelling waves. Serre focuses on existence and stability for discrete shock profiles, he reviews the existence both in the rational and in the irrational cases and gives a concise introduction to the use of spectral methods for stability analysis. Finally the lectures by Williams and Zumbrun deal with the stability of multidimensional fronts. Williams’ lecture describes the stability of multidimensional viscous shocks: the small viscosity limit, linearization and conjugation, Evans functions, Lopatinski determinants etc. Zumbrun discusses planar stability for viscous shocks with a realistic physical viscosity, necessary and sufficient conditions for nonlinear stability, in analogy to the Lopatinski condition obtained by Majda for the inviscid case.
Differential equations, Hyperbolic --- Shock waves --- Equations différentielles hyperboliques --- Congresses. --- Mathematics --- Congrès --- Differential equations, Hyperbolic -- Congresses. --- Electronic books. -- local. --- Shock waves -- Mathematics -- Congresses. --- Calculus --- Physical Sciences & Mathematics --- Mathematics. --- Partial differential equations. --- Numerical analysis. --- Continuum physics. --- Partial Differential Equations. --- Classical Continuum Physics. --- Numerical Analysis. --- Classical field theory --- Continuum physics --- Physics --- Continuum mechanics --- Mathematical analysis --- Partial differential equations --- Math --- Science --- Shock (Mechanics) --- Waves --- Differential equations, partial. --- Classical and Continuum Physics.
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The use of various types of wave energy is an increasingly promising, non-destructive means of detecting objects and of diagnosing the properties of quite complicated materials. An analysis of this technique requires an understanding of how waves evolve in the medium of interest and how they are scattered by inhomogeneities in the medium. These scattering phenomena can be thought of as arising from some perturbation of a given, known system and they are analysed by developing a scattering theory. This monograph provides an introductory account of scattering phenomena and a guide to the technical requirements for investigating wave scattering problems. It gathers together the principal mathematical topics which are required when dealing with wave propagation and scattering problems, and indicates how to use the material to develop the required solutions. Both potential and target scattering phenomena are investigated and extensions of the theory to the electromagnetic and elastic fields are provided. Throughout, the emphasis is on concepts and results rather than on the fine detail of proof; a bibliography at the end of each chapter points the interested reader to more detailed proofs of the theorems and suggests directions for further reading. Aimed at graduate and postgraduate students and researchers in mathematics and the applied sciences, this book aims to provide the newcomer to the field with a unified, and reasonably self-contained, introduction to an exciting research area and, for the more experienced reader, a source of information and techniques.
Mathematics. --- Functional Analysis. --- Operator Theory. --- Partial Differential Equations. --- Functional analysis. --- Operator theory. --- Differential equations, partial. --- Mathématiques --- Analyse fonctionnelle --- Théorie des opérateurs --- Scattering (Mathematics). --- Scattering (Physics) -- Mathematics. --- Waves -- Mathematics. --- Scattering (Physics) --- Scattering (Mathematics) --- Waves --- Scattering theory (Mathematics) --- Atomic scattering --- Atoms --- Nuclear scattering --- Particles (Nuclear physics) --- Scattering of particles --- Wave scattering --- Scattering --- Physics. --- Partial differential equations. --- Optics. --- Electrodynamics. --- Optics and Electrodynamics. --- Dynamics --- Physics --- Light --- Partial differential equations --- Functional analysis --- Functional calculus --- Calculus of variations --- Functional equations --- Integral equations --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Cycles --- Hydrodynamics --- Benjamin-Feir instability --- Boundary value problems --- Differential equations, Partial --- Scattering operator --- Collisions (Nuclear physics) --- Particles --- Collisions (Physics) --- Classical Electrodynamics.
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