吉首大学学报(自然科学版)

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五阶KdV方程解正则性的传播

石宁玄   

  1. (华北电力大学数理学院,北京 102206)
  • 出版日期:2018-01-25 发布日期:2018-01-27
  • 作者简介:石宁玄(1993—),女,河北邯郸人,华北电力大学数理学院硕士研究生,主要从事非线性色散方程研究.

On the Spread of Regularity of Solutions to the Fifth-Order KdV Equations

SHI Ningxuan   

  1. (College of Mathematics and Physics,North China Electric Power University,Beijing 102206,China)
  • Online:2018-01-25 Published:2018-01-27

摘要:

研究了五阶KdV方程解的正则性问题.选取适当的截断函数,利用局中分析法、Sobolev空间的有关性质和不等式技巧建立了解的先验估计,证明了解的正则性随时间以无限速度传播至其左边.

关键词: 五阶KdV方程, Sobolev空间, 正则性, 传播

Abstract:

The regularity of solutions to  the fifth-order KdV equations is studied.With  selection of proper truncation functions and through analytical method and inequality technique,the prior estimates of the solutions are obtained based on the qualities of Sobolev space. It is proved that the regularity of the solutions spread to the left in an infinite speed as time evolves.

Key words: fifth-order KdV equation, Sobolev space, regularity, spread

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