Acta mathematica scientia,Series B ›› 2013, Vol. 33 ›› Issue (1): 139-149.doi: 10.1016/S0252-9602(12)60200-8

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THE SIMULTANEOUS AND NON-SIMULTANEOUS BLOW-UP CRITERIA FOR A DIFFUSION SYSTEM

 LING Zheng-Qiu, WANG Ze-Jia, ZHANG Guo-Qiang   

  1. Institute of Mathematics and Information Science, Yulin Normal University, Yulin 537000, China; College of Mathematics and Informational Science, Jiangxi Normal University, Nanchang 330022, China; Department of Mathematics, Zhengzhou University, Zhengzhou 450052, China
  • Received:2011-10-05 Revised:2012-02-05 Online:2013-01-20 Published:2013-01-20
  • Contact: LING Zheng-Qiu,lingzq00@tom.com E-mail:lingzq00@tom.com;wangzj1979@gmail.com;zhanggq3230@zzu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (11071100) and Natural Science Foundation of Guangxi (2011jjA10044). The first author is supported by National Natural Science Foundation of China and Natural Science Foundation of Guangxi.

Abstract:

This paper investigates the finite time blow-up of nonnegative solutions for a nonlinear diffusion system with a more complicated source term, which is a product of localized source, local source, and weight function, and complemented by homogeneous Dirichlet boundary conditions. The criteria are proposed to identify simultaneous and non-simultaneous blow-up solutions. Moreover, the related classification for the four parameters in the model is optimal and complete. The results extend those in Zhang and Yang [12].

Key words: blow-up, simultaneous and non-simultaneous blow-up, critical exponent, dif-fusion system

CLC Number: 

  • 35B33
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