Acta mathematica scientia,Series A ›› 1999, Vol. 19 ›› Issue (1): 45-52.

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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

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

CLC Number: 

  • 35L
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