Quasi-linear diffusion equations with gradient tenns and L1 data

被引:3
作者
Andreu, F [1 ]
de León, SS [1 ]
Toledo, J [1 ]
机构
[1] Univ Valencia, Dept Math Anal, E-46100 Valencia, Spain
关键词
nonlinear diffusion equations; global existence; generalized solutions;
D O I
10.1016/j.na.2003.11.010
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this article we study the following quasi-linear parabolic problem: mu(t) - Deltau + \u\(beta-2) u\delu\(q) = \u\(alpha-2) \delu\(p) in Omega x ]0, T[, u(x, t) = 0 on phiOmega x]0, T[, u(x,0) = u(0)(x) in Omega, where Omega is a bounded open set of R-N and T > 0. We prove that if alpha, beta > 1, 0 less than or equal to p < q, 1 less than or equal to q less than or equal to 2, and alpha + p < beta + q, then there exists a generalized solution for all u(0) is an element of L-1 (Omega). (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1175 / 1209
页数:35
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