Stability of travelling waves for degenerate reaction-diffusion equations of KPP-type
Stability of travelling waves for degenerate reaction-diffusion equations of KPP-type
复制标题
KPP型简并反应扩散方程的行波稳定性
DOI:
10.1515/ans-2002-0402
复制
发表时间:
2002
影响因子:
1.8
通讯作者:
Z. Biró
中科院分区:
文献类型:
--
作者:
Z. Biró
Abstract The aim of this paper is to investigate the asymptotic behaviour as t → ∞ of the solutions to the Cauchy problem for the nonlinear degenerate KPP-type diffusion-reaction equation ut = (um)xx + up - uq, where m,p and q are positive parameters. Our result is similar to the corresponding one of Kolmogorov, Petrowsky and Piscunov; namely, we prove that for a wide class of initial functions, the solution approaches V(x - c*t) as t → ∞ uniformly in x, where V is a travelling-wave solution with a minimal speed c*.