"Eigenvalues of the (p, q, r)-Laplacian with a parametric boundary condition"

IF 1.4 4区 数学 Q1 MATHEMATICS Carpathian Journal of Mathematics Pub Date : 2022-07-26 DOI:10.37193/cjm.2022.03.03
L. Barbu, G. Moroşanu
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引用次数: 0

Abstract

"Consider in a bounded domain $\Omega \subset \mathbb{R}^N$, $N\ge 2$, with smooth boundary $\partial \Omega$ the following nonlinear eigenvalue problem \begin{equation*} \left\{\begin{array}{l} -\sum_{\alpha \in \{ p,q,r\}}\rho_{\alpha}\Delta_{\alpha}u=\lambda a(x) \mid u\mid ^{r-2}u\ \ \mbox{ in} ~ \Omega,\\[1mm] \big(\sum_{\alpha \in \{p,q,r\}}\rho_{\alpha}\mid \nabla u\mid ^{\alpha-2}\big)\frac{\partial u}{\partial\nu}=\lambda b(x) \mid u\mid ^{r-2}u ~ \mbox{ on} ~ \partial \Omega, \end{array}\right. \end{equation*} where $p, q, r\in (1, +\infty),~q0.$ Such a triple-phase problem is motivated by some models arising in mathematical physics. If $r \not\in (q, p),$ we determine a positive number $\lambda_r$ such that the set of eigenvalues of the above problem is precisely $\{ 0\} \cup (\lambda_r, +\infty )$. On the other hand, in the complementary case $r \in (q, p)$ with $r < q(N-1)/(N-q)$ if $q
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参数边界条件下(p,q,r)-拉普拉斯算子的特征值
“考虑在有界域$\Omega\subet\mathbb{R}^N$,$N\ge 2$中,具有光滑边界$\partial \Omega$的下列非线性特征值问题\beart{方程*}\left\{\beart}{l}-\sum_{\alpha\in\{p,q,R}}\rho_{\aalpha}\Delta_^{r-2}u\\\mbox{in}~\Omega,\\[1mm]\big^{r-2}u~\ mbox{on}~\ partial \ Omega,\ end{array}\ right。\end{方程*},其中$p,q,r\in(1,+\infty),~q0.$这样的三相问题是由数学物理中出现的一些模型引起的。如果$r\not\in(q,p),$,我们确定一个正数$\lambda_r$,使得上述问题的特征值集恰好是$\{0\}\cup(\lambda_r,+\infty)$。另一方面,在具有$r
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来源期刊
Carpathian Journal of Mathematics
Carpathian Journal of Mathematics MATHEMATICS, APPLIED-MATHEMATICS
CiteScore
2.40
自引率
7.10%
发文量
21
审稿时长
>12 weeks
期刊介绍: Carpathian Journal of Mathematics publishes high quality original research papers and survey articles in all areas of pure and applied mathematics. It will also occasionally publish, as special issues, proceedings of international conferences, generally (co)-organized by the Department of Mathematics and Computer Science, North University Center at Baia Mare. There is no fee for the published papers but the journal offers an Open Access Option to interested contributors.
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