Abstract
The aims of this paper are to discuss the extinction and positivity for the solution of the initial boundary value problem and Cauchy problem of u t = div(|∇u m|p−2∇u m). It is proved that the weak solution will be extinct for 1 < p ≤ 1 + 1/m and will be positive for p > 1 + 1/m for large t, where m > 0.
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The project is supported by NSFC(10371050,10571072) and by the 985 program of Jilin University
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Yuan, H.J., Lian, S.Z., Cao, C.L. et al. Extinction and Positivity for a Doubly Nonlinear Degenerate Parabolic Equation. Acta Math Sinica 23, 1751–1756 (2007). https://doi.org/10.1007/s10114-007-0944-6
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DOI: https://doi.org/10.1007/s10114-007-0944-6