Acta mathematica scientia,Series A ›› 2005, Vol. 25 ›› Issue (6): 881-889.

• Articles • Previous Articles     Next Articles

Global Existence and Nonexistence for a Nonlinear Parabolic Equation with a Nonlinear Boundary Condition

 CHEN You-Peng, XIE Chun-Hong   

  • Online:2005-12-24 Published:2005-12-24
  • Supported by:

    江苏省博士后科研资助计划(11107013152)和盐城师范学院自然科学基金资助

Abstract:

This paper deals with the existence and nonexistence of global positive solutions of the nonlinear parabolic equation with a nonlinear boundary condition. A necessary and sufficient condition in order that all positive solutions exist globally is obtained by using the technique of the upper and lower solutions, which have the same form and they are simple in the calculations.

Key words: Nonlinear parabolic equation, Nonlinear boundary condit ion, Global existence, Finite time blow up, Upper and lower solutions

CLC Number: 

  • 35K55
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