An eigenvalue estimate for a Robin $p$ -Laplacian in $C^1$ domains
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- by Konstantin Pankrashkin PDF
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Abstract:
Let $\Omega \subset \mathbb {R}^n$ be a bounded $C^1$ domain and $p>1$. For $\alpha >0$, define the quantity \[ \Lambda (\alpha )=\inf _{u\in W^{1,p}(\Omega ), u\not \equiv 0} \Big (\int _\Omega |\nabla u|^p \mathrm {d}x - \alpha \int _{\partial \Omega } |u|^p \mathrm {d} s\Big )\Big / \int _\Omega |u|^p \mathrm {d} x \] with $\mathrm {d} s$ being the hypersurface measure, which is the lowest eigenvalue of the $p$-Laplacian in $\Omega$ with a non-linear $\alpha$-dependent Robin boundary condition. We show the asymptotics $\Lambda (\alpha )=(1-p)\alpha ^{p/(p-1)}+o(\alpha ^{p/(p-1)})$ as $\alpha$ tends to $+\infty$. The result was only known for the linear case $p=2$ or under stronger smoothness assumptions. Our proof is much shorter and is based on completely different and elementary arguments, and it allows for an improved remainder estimate for $C^{1,\lambda }$ domains.References
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Additional Information
- Konstantin Pankrashkin
- Affiliation: Fakultät V – Mathematik und Naturwissenschaften, Carl von Ossietzky Universität, Institut für Mathematik, 26111 Oldenburg, Germany
- MR Author ID: 652529
- Email: konstantin.pankrashkin@uol.de
- Received by editor(s): January 8, 2020
- Received by editor(s) in revised form: February 16, 2020, March 20, 2020, and March 26, 2020
- Published electronically: June 30, 2020
- Communicated by: Tanya Christiansen
- © Copyright 2020 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 148 (2020), 4471-4477
- MSC (2010): Primary 35J92, 35P15, 49R05, 49J40, 35J05
- DOI: https://doi.org/10.1090/proc/15116
- MathSciNet review: 4135311