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arXiv 2006.14397math.OC
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半线性反应扩散方程的近似能控性

Approximate controllability of the semilinear reaction-diffusion equation governed by a multiplicative control

Mohamed Ouzahra

摘要:

本文研究了一类多维半线性反应扩散方程的近似能控性,该方程受一个局部分布于反应项中的乘法控制所支配.对于一个给定的初态,我们提供了充分条件的理想状态,在任意小的时间间隔内近似达到。此外,在全局支持控制的情况下,我们证明了在任何时间间隔内预先给定的不依赖于初始和目标状态的近似可控性。我们的方法是基于线性半群理论和关于光滑函数的一致逼近的一些结果。

英文摘要:

In this paper we are concerned with the approximate controllability of a multidimensional semilinear reaction-diffusion equation governed by a multiplicative control, which is locally distributed in the reaction term. For a given initial state we provide sufficient conditions on the desirable state to be approximately reached within an arbitrarily small time interval. Moreover, in the case of a globally supported control, we prove the approximate controllability within any time-interval given in advance which does not depend on the initial and target states. Our approaches are based on linear semigroup theory and some results on uniform approximation with smooth functions.

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