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arXiv 1902.02655math.AP
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一类具有内部退化的人口方程的能控性

Controllability for a population equation with interior degeneracy

Genni Fragnelli

摘要:

本文讨论了一类退化的散度型模型,它描述了种群的动态随时间、年龄和空间的变化。我们假设退化发生在空间域的内部,我们专注于零可控性。为此,首先,我们证明了Carleman估计相关的伴随问题,然后,通过切断功能,我们证明了存在一个零控制功能本地化的空间域的内部。我们考虑两种情况:或者控制区域包含简并点$x_0$,或者控制区域是两个区间的并集,每个区间位于$x_0$的一侧。本文是对前人研究成果的补充,是对本课题研究的总结。

英文摘要:

We deal with a degenerate model in divergence form describing the dynamics of a population depending on time, on age and on space. We assume that the degeneracy occurs in the interior of the spatial domain and we focus on null controllability. To this aim, first we prove Carleman estimates for the associated adjoint problem, then, via cut off functions, we prove the existence of a null control function localized in the interior of the space domain. We consider two cases: either the control region contains the degeneracy point $x_0$, or the control region is the union of two intervals each of them lying on one side of $x_0$. This paper complement some previous results, concluding the study of the subject.

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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