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arXiv 1407.4501math.AP
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趋化系统径向解和$N$对称解爆破的最优准则

Optimal criteria for blowup of radial and $N$-symmetric solutions of chemotaxis systems

Piotr Biler, Grzegorz Karch, Jacek Zienkiewicz

摘要:

给出了二维Keller-Segel趋化性模型的$N$对称解爆破的质量浓度等于$8π$的一个简单证明.此外,爆破的径向初始浓度,有关适当的Morrey空间规范的解决方案的标准,导出径向解决方案的趋化性在几个维度。从某种意义上说,这一条件是对保证解在时间上全局存在的条件的补充。

英文摘要:

A simple proof of concentration of mass equal to $8π$ for blowing up $N$-symmetric solutions of the Keller--Segel model of chemotaxis in two dimensions with large $N$ is given. Moreover, a criterion for blowup of solutions in terms of the radial initial concentrations, related to suitable Morrey spaces norms, is derived for radial solutions of chemotaxis in several dimensions. This condition is, in a sense, complementary to the one guaranteeing the global-in-time existence of solutions.

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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