J4 ›› 2013, Vol. 51 ›› Issue (02): 159-163.

• 数学 •    下一篇

具有非线性吸收项的快扩散渗流方程解的熄灭

吴秀兰1,2, 高文杰1   

  1. 1. 吉林大学 数学研究所, 长春 130012; 2. 吉林师范大学 数学学院, 吉林 四平 136000
  • 收稿日期:2012-07-27 出版日期:2013-03-26 发布日期:2013-03-27
  • 通讯作者: 高文杰 E-mail:wjgao@jlu.edu.cn

Extinction of Solutions to a Class of Fast Diffusion PorousMedium Equations with Nonlinear Absorption Term

WU Xiulan1,2, GAO Wenjie1   

  1. 1. Institute of Mathematics, Jilin University, Changchun 130012, China;2. College of Mathematics, Jilin Normal University, Siping 136000, Jilin Province, China
  • Received:2012-07-27 Online:2013-03-26 Published:2013-03-27
  • Contact: GAO Wenjie E-mail:wjgao@jlu.edu.cn

摘要:

考虑快扩散方程解在有限时刻的熄灭性质, 利用Lp估计和内插不等式给出了解在有限时刻熄灭的充分条件及衰退估计.

关键词: 快扩散; 渗流方程; 熄灭; 衰退估计

Abstract:

The authors investigated the extinction for a class of fast diffusion equations in finite time, giving the sufficient conditions about the extinction and the decay estimates of solutions with the help of Lp estimate methods and interpolation inequalities.

Key words: fast diffusion, porous medium equation, extinction, decay estimate

中图分类号: 

  • O175.8