A nonlocal reaction diffusion equation and its relation with Fujita exponent
A nonlocal reaction diffusion equation and its relation with Fujita exponent
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非局部反应扩散方程及其与Fujita指数的关系
DOI:
10.1016/j.jmaa.2016.07.014
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发表时间:
2015-10
影响因子:
1.3
通讯作者:
Li Chen
中科院分区:
文献类型:
--
作者:
Shen Bian;Li Chen
This paper is concerned with a type of nonlinear reaction–diffusion equation, which arises from the population dynamics. The equation includes a certain type reaction term u α (1− σ∫ R n u β d x) of dimension n≥ 1 and σ> 0. An energy-methods-based proof on the existence of global solutions is presented and the qualitative behavior of solution which is decided by the choice of α, β is exhibited. More precisely, for 1≤ α< 1+(1− 2/p) β, where p is the exponent appears in Sobolev's embedding theorem defined in (3), the equation admits global solution for any nonnegative initial data. Especially, in the case of n≥ 2 and β= 1, the exponent α< 1+ 2/n is exactly the well-known Fujita exponent. The global existence result obtained in this paper shows that by switching on the nonlocal effect, ie, from σ= 0 to σ> 0, the solution's behavior differs distinctly, that's, from finite time blow-up to global existence.
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影响因子:
0.6
作者:
Wang, Xiaoliu;Wo, Weifeng
通讯作者:
Wo, Weifeng
影响因子:
1.5
作者:
H. Fujita
通讯作者:
H. Fujita
DOI:
10.1007/978-3-0346-0537-3
发表时间:
2011-12
期刊:
--
影响因子:
--
作者:
V. Volpert
通讯作者:
V. Volpert
影响因子:
1
作者:
S. Bian;Jian‐Guo Liu;Chenlong Zou
通讯作者:
S. Bian;Jian‐Guo Liu;Chenlong Zou
DOI:
10.1080/03605302.2010.538784
发表时间:
2010-11
影响因子:
1.9
作者:
A. Lorz;S. Mirrahimi;B. Perthame
通讯作者:
A. Lorz;S. Mirrahimi;B. Perthame