Critical extinction exponents for a polytropic filtration equation with absorption and source |
| |
| Authors: | Yifu Wang Jingxue Yin |
| |
| Affiliation: | 1. Department of Mathematics, Beijing Institute of Technology, , Beijing, 100081 China;2. School of Mathematics, South China Normal University, , Guangzhou, Guangdong, 510631 China |
| |
| Abstract: | In this paper, instead of energy methods, we apply the supersolution and subsolution methods to investigate the critical extinction exponents for a polytropic filtration equation with absorption and source, and improve the results of Mu et al. (J. Math. Anal. Appl. 2012; 391 :429–440). Copyright © 2012 John Wiley & Sons, Ltd. |
| |
| Keywords: | critical extinction exponent polytropic filtration equation supersolutions and subsolutions |
|
|
