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arXiv 2103.10448math.DSmath.AP
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紧基流上非自治标量线性耗散和纯耗散抛物型偏微分方程

Non-autonomous scalar linear-dissipative and purely dissipative parabolic PDEs over a compact base flow

Rafael Obaya, Ana Sanz

摘要:

本文考虑了一般紧致连通流上的一类非自治标量抛物型偏微分方程。存在或不存在的零的邻域的问题是线性的影响所使用的方法和动力学的诱导斜积半流。这就是为什么区分两种情况:线性耗散和纯耗散问题。在这两种情况下,使用主谱理论的全球和拉回吸引子的结构进行了研究。此外,在纯耗散的情形下,给出了一个简单的条件,该条件包含了基本的线性动力学和非线性项的一些性质,用以确定吸引子的非平凡部分.

英文摘要:

In this paper a family of non-autonomous scalar parabolic PDEs over a general compact and connected flow is considered. The existence or not of a neighbourhood of zero where the problems are linear has an influence on the methods used and on the dynamics of the induced skew-product semiflow. That is why two cases are distinguished: linear-dissipative and purely dissipative problems. In both cases, the structure of the global and pullback attractors is studied using principal spectral theory. Besides, in the purely dissipative setting, a simple condition is given, involving both the underlying linear dynamics and some properties of the nonlinear term, to determine the nontrivial sections of the attractor.

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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