Huygens' Principle in Minkowski Spaces and Soliton Solutions of the Korteweg–de Vries Equation

@article{Berest1997HuygensPI,
  title={Huygens' Principle in Minkowski Spaces and Soliton
Solutions of the Korteweg–de Vries Equation
},
  author={Yuri Yu. Berest and Igor Loutsenko},
  journal={Communications in Mathematical Physics},
  year={1997},
  volume={190},
  pages={113-132}
}
Abstract:A new class of linear second order hyperbolic partial differential operators satisfying Huygens' principle in Minkowski spaces is presented. The construction reveals a direct connection between Huygens' principle and the theory of solitary wave solutions of the Korteweg–de Vries equation. 
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