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arXiv 1602.08176math.AP
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反应扩散锋的点态稳定性

Point-wise Stability of Reaction Diffusion Fronts

Yingwei Li

摘要:

使用逐点半群技术,我们建立了急剧的衰减率在空间和时间的扰动反应扩散前的时间渐近极限。这恢复了Sattinger,Henry等人在加权$L^p$和Sobolev范数下时间指数收敛的结果,同时捕获了高斯速率下空间扩散的新特征。新功能的论点是一个逐点的格林函数分解调和谱分解和短期纳什-阿伦森估计和瞬时跟踪计划中使用的粘性冲击波的稳定性的研究。

英文摘要:

Using pointwise semigroup techniques, we establish sharp rates of decay in space and time of a perturbed reaction diffusion front to its time-asymptotic limit. This recovers results of Sattinger, Henry and others of time-exponential convergence in weighted $L^p$ and Sobolev norms, while capturing the new feature of spatial diffusion at Gaussian rate. Novel features of the argument are a point-wise Green function decomposition reconciling spectral decomposition and short-time Nash-Aronson estimates and an instantaneous tracking scheme similar to that used in the study of stability of viscous shock waves.

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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