arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2104.01748math.APmath.DS
收藏

抛物-椭圆趋化系统的唯一延拓不等式

Unique continuation inequalities for the parabolic-elliptic chemotaxis system

Gengsheng Wang, Guojie Zheng

摘要:

研究了有界区域上半线性抛物-椭圆型耦合系统的定量唯一延拓问题。该系统是由Keller和Segel引入的趋化性模型的简化版本。借助于本文建立的系统解的先验L_∞估计,我们将系统中的半线性抛物型方程处理为线性抛物型方程,然后利用频率函数法和局部化技巧建立了系统的两个唯一的连续不等式.作为上述两个不等式的结果,我们有以下定性的唯一连续性:如果一个解的一个分量在某个时刻T>0在一个非空开子集中为零,则该解恒为零。

英文摘要:

This paper studies the quantitative unique continuation for a semi-linear parabolic-elliptic coupled system on a bounded domain. This system is a simplified version of the chemotaxis model introduced by Keller and Segel. With the aid of priori L^infty-estimates (for solutions of the system) built up in this paper, we treat the semi-linear parabolic equation in the system as a linear parabolic equation, and then use the frequency function method and the localization technique to build up two unique continuation inequalities for the system. As a consequence of the above-mentioned two inequalities, we have the following qualitative unique continuation property: if one component of a solution vanishes in a nonempty open subset at some time T>0, then the solution is identically zero.

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。

↑