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arXiv 1502.00209math.AP
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周期介质中反应扩散方程中传播方向的变化

Varying the direction of propagation in reaction-diffusion equations in periodic media

Matthieu Alfaro, Thomas Giletti

摘要:

我们考虑一个多维反应扩散方程的点火或单稳态类型,涉及周期性的异质性,并分析的方向上的传播现象的依赖性。我们证明,潜在脉动锋的(最小)速度连续取决于传播方向,其相关轮廓也是如此,只要它在时移中是唯一的。我们还证明了扩展属性\cite{Wein02}实际上是均匀的方向。

英文摘要:

We consider a multidimensional reaction-diffusion equation of either ignition or monostable type, involving periodic heterogeneity, and analyze the dependence of the propagation phenomena on the direction. We prove that the (minimal) speed of the underlying pulsating fronts depends continuously on the direction of propagation, and so does its associated profile provided it is unique up to time shifts. We also prove that the spreading properties \cite{Wein02} are actually uniform with respect to the direction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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