Asymptotic spreading of interacting species with multiple fronts Ⅰ: A geometric optics approach

Asymptotic spreading of interacting species with multiple fronts Ⅰ: A geometric optics approach
复制标题

DOI:
10.3934/dcds.2020050
复制
发表时间:
2019-08
期刊:
Discrete & Continuous Dynamical Systems - A
影响因子:
--
通讯作者:
Qian Liu;Shuang Liu;King-Yeung Lam
Qian Liu;Shuang Liu;King-Yeung Lam
中科院分区:
其他
文献类型:
--
作者:
Qian Liu;Shuang Liu;King-Yeung Lam

文献摘要

被引文献

相似文献

建立了Lotka-Volterra竞争扩散系统的扩散性质。当初始数据在右半线上消失时,我们得到了精确的传播速度,并证明了连续入侵前沿之间收敛到齐次平衡状态。我们的方法是受Freidlin,Evans和Souganwei等人关于Fisher-KPP方程的几何光学方法的启发。我们的主要结果解决了Shigesada等人在1997年提出的一个悬而未决的问题,并表明其中一个物种向右侧传播,具有非局部拉锋。
We establish spreading properties of the Lotka-Volterra competition-diffusion system. When the initial data vanish on a right half-line, we derive the exact spreading speeds and prove the convergence to homogeneous equilibrium states between successive invasion fronts. Our method is inspired by the geometric optics approach for Fisher-KPP equation due to Freidlin, Evans and Souganidis. Our main result settles an open question raised by Shigesada et al. in 1997, and shows that one of the species spreads to the right with a nonlocally pulled front.