Non-Negative Solutions of Generalized Porous Medium Equations

Non-Negative Solutions of Generalized Porous Medium Equations
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广义多孔介质方程的非负解

DOI:
10.4171/rmi/34
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发表时间:
1986
影响因子:
1.2
通讯作者:
C. Kenig
C. Kenig
中科院分区:
数学2区
文献类型:
--
作者:
B. Dahlberg;C. Kenig

文献摘要

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相似文献

本文的目的是研究非线性发展方程的非负解u ? u/?t =?f(u),x I Rn,0 < t < T = +8(1.1) 这里假设非线性f是连续的,随着f(0)= 0而增加。这个方程出现在各种物理问题中,并且专门化f导致非线性过滤或多孔介质中的气体流动的模型。关于这些方程的最新研究,见[9]。 本文主要研究(1,1)的初值问题。
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).