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Critical extinction exponents for a polytropic filtration equation with absorption and source
Author(s) -
Wang Yifu,
Yin Jingxue
Publication year - 2013
Publication title -
mathematical methods in the applied sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.719
H-Index - 65
eISSN - 1099-1476
pISSN - 0170-4214
DOI - 10.1002/mma.2708
Subject(s) - polytropic process , extinction (optical mineralogy) , filtration (mathematics) , mathematics , absorption (acoustics) , mathematical analysis , mechanics , physics , pure mathematics , acoustics , optics
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.
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