摘要
本文讨论如下奇异半线性热方程的初值问题其中γ>1,σ>O,f(x)连续有界非负但不恒为零.我们讨论了问题(1),(2)非负局部经典解的存在性和非负整体解的不存在问题,得到当0<σ<1且时,(1),(2)没有非负整体解.当σ=1且时,(1),(2)没有非负整体解,当σ>1时(1),(2)没有非负整体解.
In this paper, we study the following initial problem whereγ> 1, σ> 0. f(x) is continuous, bounded, uonnegative, and not identically zero real function.We study the existence of nonnegative local solution and global nonexistence of nonnegative solution for the problem(1), (2). We prove nonexistence of nonnegative global solution when 0<σ<1 and; or σ=1 and ; or σ>1.
出处
《数学学报(中文版)》
SCIE
CSCD
北大核心
1998年第6期1303-1314,共12页
Acta Mathematica Sinica:Chinese Series