Symmetry, phase modulation and nonlinear waves

著者

    • Bridges, Thomas J.

書誌事項

Symmetry, phase modulation and nonlinear waves

Thomas J. Bridges

（Cambridge monographs on applied and computational mathematics, 31）

Cambridge University Press, 2017

  • : hardback

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注記

Includes bibliographical references (p. 216-225) and index

内容説明・目次

内容説明

Nonlinear waves are pervasive in nature, but are often elusive when they are modelled and analysed. This book develops a natural approach to the problem based on phase modulation. It is both an elaboration of the use of phase modulation for the study of nonlinear waves and a compendium of background results in mathematics, such as Hamiltonian systems, symplectic geometry, conservation laws, Noether theory, Lagrangian field theory and analysis, all of which combine to generate the new theory of phase modulation. While the build-up of theory can be intensive, the resulting emergent partial differential equations are relatively simple. A key outcome of the theory is that the coefficients in the emergent modulation equations are universal and easy to calculate. This book gives several examples of the implications in the theory of fluid mechanics and points to a wide range of new applications.

目次

  • 1. Introduction
  • 2. Hamiltonian ODEs and relative equilibria
  • 3. Modulation of relative equilibria
  • 4. Revised modulation near a singularity
  • 5. Introduction to Whitham Modulation Theory - the Lagrangian viewpoint
  • 6. From Lagrangians to Multisymplectic PDEs
  • 7. Whitham Modulation Theory - the multisymplectic viewpoint
  • 8. Phase modulation and the KdV equation
  • 9. Classical view of KdV in shallow water
  • 10. Phase modulation of uniform flows and KdV
  • 11. Generic Whitham Modulation Theory in 2+1
  • 12. Phase modulation in 2+1 and the KP equation
  • 13. Shallow water hydrodynamics and KP
  • 14. Modulation of three-dimensional water waves
  • 15. Modulation and planforms
  • 16. Validity of Lagrangian-based modulation equations
  • 17. Non-conservative PDEs and modulation
  • 18. Phase modulation - extensions and generalizations
  • Appendix A. Supporting calculations - 4th and 5th order terms
  • Appendix B. Derivatives of a family of relative equilibria
  • Appendix C. Bk and the spectral problem
  • Appendix D. Reducing dispersive conservation laws to KdV
  • Appendix E. Advanced topics in multisymplecticity
  • References
  • Index.

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