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arXiv 2602.23162math.DS
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非局部反应扩散方程吸引子的存在与特征化

Existence and characterization of attractors for a nonlocal reaction-diffusion equation having an energy functional

Universidad Miguel Hernández de Elche(埃尔切米格尔·埃尔南德斯大学);Universidad de Sevilla(塞维利亚大学)

Rubén Caballero, Pedro Marín-Rubio, José Valero

AI总结:

本文研究非局部反应扩散方程的吸引子存在性与特征化,通过多值半流理论证明全局吸引子的存在,并将其与平稳点集的不稳定或稳定流形联系起来。

摘要:

本文研究了一个非局部反应扩散方程,其中扩散依赖于解的梯度。我们首先证明了正则解和强解的存在性和唯一性。其次,在较弱的假设下,通过定义多值半流(当初值问题的唯一性成立时,它是一个半群),我们获得了在两种情况下全局吸引子的存在性。第三,我们通过考虑仅在有界完整轨迹集中的解,将吸引子特征化为平稳点集的不稳定流形或稳定流形。

英文摘要:

In this paper we study a nonlocal reaction-diffusion equation in which the diffusion depends on the gradient of the solution. We prove first the existence and uniqueness of regular and strong solutions. Second, we obtain the existence of global attractors in both situations under rather weak assumptions by the defining a multivalued semiflow (which is a semigroup in the particular situation when uniqueness of the Cauchy problem is satisfied). Third, we characterize the attractor either as the unstable manifold of the set of stationary points or as the stable one when we consider solutions only in the set of bounded complete trajectories.

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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