数学物理学报 ›› 1999, Vol. 19 ›› Issue (1): 45-52.

• 论文 • 上一篇    下一篇

非线性双曲方程的整体解的存在性|Blow up及生命跨度

  

  1. (陕西师范大学数学系 |西安 710062) |

     

  • 出版日期:1999-02-01 发布日期:1999-02-01

On Global Existence,Blow Up and Life Span of Nonlinear Hyperbolic Equations

  1. (Department of Mathematics, Shanxi Normal University, Xi'an 710062)

  • Online:1999-02-01 Published:1999-02-01

摘要:

利用非线性泛函的极值原理证明了一类非线性双曲方程的Cauchy问题,当初始能量为“临界值”时整体解的存在性,Blow up问题.并给出了初始能量小于临界值时非整体解的生命跨度上界的估计.

关键词: 极值原理, 整体解, Blowup问题, 生命跨度.

Abstract:

 This paper proves the existence of global solutions and blow up for the Cauchy problem of some nonlinear hyperbolic equations with the initial energy of critical value,using the extreme principles of nonlinear functional, and gives the super estimate of nonlinear global solutions of life span for initial energy less than critical value.

Key words: Extremeprinciples, Globalsolutions, Theproblemofblowup, Lifespan

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  • 35L