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