Singular solutions for semi-linear parabolic equations on nonsmooth domains

Singular solutions for semi-linear parabolic equations on nonsmooth domains
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非光滑域上半线性抛物型方程的奇异解

DOI:
10.1016/j.jmaa.2006.11.035
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发表时间:
2007
影响因子:
1.3
通讯作者:
L. Riahi
L. Riahi
中科院分区:
数学3区
文献类型:
--
作者:
L. Riahi

文献摘要

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我们证明了半线性抛物方程Δxu−∂∂tu+μup=0在Ω= dx]0,∞[上的正奇异解的存在性,其中p>1,D是Rn中有界的nta域,n大于或等于2,并且μ是在D上覆盖由Zhang和Zhao采用的椭圆Kato类势的有符号Radon测度的一般类。并给出了一个基于简单不动点定理的新证明。
We prove the existence of positive singular solutions for the semi-linear parabolic equation Δxu−∂∂tu+μup=0 on Ω=D×]0,∞[, where p>1,D is a bounded NTA-domain in Rn, n⩾2, and μ is in a general class of signed Radon measures on D covering the elliptic Kato class of potentials adopted by Zhang and Zhao. A new proof of the result based on a simple fixed point theorem is also given.