Travelling front solutions of a nonlocal Fisher equation

被引:202
作者
Gourley, SA [1 ]
机构
[1] Univ Surrey, Dept Math & Stat, Guildford GU2 5XH, Surrey, England
关键词
Fisher's equation; nonlocal interaction; travelling fronts;
D O I
10.1007/s002850000047
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
We consider a scalar reaction-diffusion equation containing a nonlocal term (an integral convolution in space) of which Fisher's equation is a particular case. We consider travelling wavefront solutions connecting the two uniform states of the equalion. We show that if the nonlocality is sufficiently weak in a certain sense then such travelling fronts exist. We also construct expressions for the front and its evolution from initial data, showing that the main difference between our front and that of Fisher's equation is that for sufficiently strong nonlocality our front is non-monotone and has a very prominent hump.
引用
收藏
页码:272 / 284
页数:13
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