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arXiv 2408.06236math.APmath.SP
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有界区域和外区域中吸收与生成 $p$-Robin 特征值的行为

Behavior of Absorbing and Generating $p$-Robin Eigenvalues in Bounded and Exterior Domains

Lukas Bundrock, Tiziana Giorgi, Robert Smits

AI总结:

本文为广义 $p$-Robin 问题的第一特征值建立了严格定量不等式,统一推导了有界区域中所有 $p$ 及小参数 $α$ 的精确渐近行为,并刻画了外区域特征值存在性与渐近性,改进了现有结果。

摘要:

我们为广义 $p$-Robin 问题的第一特征值建立了严格的定量不等式,涵盖经典扩散吸收情形(其中 Robin 边界参数 $α$ 为正)以及超导生成情形($α<0$,此时边界作为源)。在有界区域中,我们采用统一方法推导了所有 $p$ 及所有小实数 $α$ 的精确渐近行为,在多个方向改进了现有结果,包括在经典 2-Robin 问题情形下要求更弱的边界正则性,该情形曾由 René Sperb 在其基础性工作中研究。在外区域中,我们刻画了特征值的存在性,针对球外区域的第一特征值建立了一般不等式及 $α\ o 0$ 时的渐近行为,并在二维情形下针对凸区域获得了若干精确的几何不等式。

英文摘要:

We establish rigorous quantitative inequalities for the first eigenvalue of the generalized $p$-Robin problem, for both the classical diffusion absorption case, where the Robin boundary parameter $α$ is positive, and the superconducting generation regime ($α<0$), where the boundary acts as a source. In bounded domains, we use a unified approach to derive a precise asymptotic behavior for all $p$ and all small real $α$, improving existing results in various directions, including requiring weaker boundary regularity for the case of the classical 2-Robin problem, studied in the fundamental work by René Sperb. In exterior domains, we characterize the existence of eigenvalues, establish general inequalities and asymptotics as $α\to 0$ for the first eigenvalue of the exterior of a ball, and obtain some sharp geometric inequalities for convex domains in two dimensions.

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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