Pulsating semi-waves in periodic media and spreading speed determined by a free boundary model
Pulsating semi-waves in periodic media and spreading speed determined by a free boundary model
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周期介质中的脉动半波和自由边界模型确定的传播速度
DOI:
10.1016/j.anihpc.2013.11.004
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发表时间:
2015-03
期刊:
影响因子:
--
通讯作者:
Liang,Xing
中科院分区:
文献类型:
--
作者:
Du,Yihong;Liang,Xing
We consider a radially symmetric free boundary problem with logistic nonlinear term. The spatial environment is assumed to be asymptotically periodic at infinity in the radial direction. For such a free boundary problem, it is known from [7] that a spreading-vanishing dichotomy holds. However, when spreading occurs, only upper and lower bounds are obtained in [7] for the asymptotic spreading speed. In this paper, we investigate one-dimensional pulsating semi-waves in spatially periodic media. We prove existence, uniqueness of such pulsating semi-waves, and show that the asymptotic spreading speed of the free boundary problem coincides with the speed of the corresponding pulsating semi-wave.
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影响因子:
2.4
作者:
Du, Yihong;Guo, Zongming
通讯作者:
Guo, Zongming
DOI:
10.3934/nhm.2012.7.583
发表时间:
2012-12
期刊:
Networks Heterog. Media
影响因子:
--
作者:
Gary Bunting;Yihong Du;K. Krakowski
通讯作者:
Gary Bunting;Yihong Du;K. Krakowski
影响因子:
2.6
作者:
Henry Berestycki;François Hamel;Nikolai Nadirashvili
通讯作者:
Henry Berestycki;François Hamel;Nikolai Nadirashvili
影响因子:
1
作者:
Grégoire Nadin
通讯作者:
Grégoire Nadin
影响因子:
2.4
作者:
Grégoire Nadin
通讯作者:
Grégoire Nadin