双调和热方程解的局部一致收敛性和最终正性

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-11-04 DOI:10.57262/die036-0910-727

D. Daners, Jochen Gluck, J. Mui

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引用次数: 4

摘要

在Dirichlet边界条件下，我们研究了具有有界光滑截面的无限圆柱体上与双调和算子相关的演化方程。重点是大时间解的渐近性和正性。特别是，我们得出了解决方案的局部最终积极性。进一步证明了双调和热方程解的局部最终正性及其在欧氏空间上的推广。我们分析的主要工具是傅立叶变换和光谱方法。

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Local uniform convergence and eventual positivity of solutions to biharmonic heat equations

We study the evolution equation associated with the biharmonic operator on infinite cylinders with bounded smooth cross-section subject to Dirichlet boundary conditions. The focus is on the asymptotic behaviour and positivity properties of the solutions for large times. In particular, we derive the local eventual positivity of solutions. We furthermore prove the local eventual positivity of solutions to the biharmonic heat equation and its generalisations on Euclidean space. The main tools in our analysis are the Fourier transform and spectral methods.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.