Non-Negative Solutions of Generalized Porous Medium Equations
Non-Negative Solutions of Generalized Porous Medium Equations
复制标题
广义多孔介质方程的非负解
DOI:
10.4171/rmi/34
复制
发表时间:
1986
影响因子:
1.2
通讯作者:
C. Kenig
中科院分区:
文献类型:
--
作者:
B. Dahlberg;C. Kenig
The purpose of this paper is to study nonnegative solutions u of the nonlinear evolution equations
?u/?t = ?f(u), x I Rn, 0 < t < T = +8 (1.1)
Here the nonlinearity f is assumed to be continuous, increasing with f(0) = 0. This equation arises in various physical problems, and specializing f leads to models for nonlinear filtrations, or for the gas flow in a porous medium. For a recent survey in these equations see [9].
The main object of this work is to study the initial value problem for (1,1).