Multiplicity of solutions to a degenerate elliptic equation in the sub-critical and critical cases

Fuente: arXiv
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Autores principales: Bal, Kaushik, Biswas, Sanjit
Formato: Preprint
Publicado: 2024
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author Bal, Kaushik
Biswas, Sanjit
author_facet Bal, Kaushik
Biswas, Sanjit
contents Given a smooth and bounded domain $Ω(\subset\mathbf{R}^N)$, we prove the existence of two non-trivial, non-negative solutions for the semilinear degenerate elliptic equation \begin{align} \left. \begin{array}{l} -Δ_λu=μg(z)|u|^{r-1}u+h(z)|u|^{s-1}u \;\text{in}\; Ωu\in H^{1,λ}_0(Ω) \end{array}\right\} \end{align} where $Δ_λ=Δ_x+|x|^{2λ}Δ_y$ is the Grushin Laplacian Operator, $z=(x,y)\inΩ$, $N=n+m;\, n,\, m\geq 1$, $λ>0$, $0\leq r<1<s<2^*_λ-1$; the functions $g,h$ are of indefinite sign and $2^*_λ=\frac{2Q}{Q-2}$ is the critical Sobolev exponent, where $Q=n+(1+λ)m$ is the homogeneous dimension associated to the operator $Δ_λ$. As for the critical case $s=2^*_λ-1$, we prove the existence of at least two non-trivial, non-negative solutions provided $g\geq 0$ and $h\equiv 1$.
format Preprint
id arxiv_https___arxiv_org_abs_2412_04794
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Multiplicity of solutions to a degenerate elliptic equation in the sub-critical and critical cases
Bal, Kaushik
Biswas, Sanjit
Analysis of PDEs
Given a smooth and bounded domain $Ω(\subset\mathbf{R}^N)$, we prove the existence of two non-trivial, non-negative solutions for the semilinear degenerate elliptic equation \begin{align} \left. \begin{array}{l} -Δ_λu=μg(z)|u|^{r-1}u+h(z)|u|^{s-1}u \;\text{in}\; Ωu\in H^{1,λ}_0(Ω) \end{array}\right\} \end{align} where $Δ_λ=Δ_x+|x|^{2λ}Δ_y$ is the Grushin Laplacian Operator, $z=(x,y)\inΩ$, $N=n+m;\, n,\, m\geq 1$, $λ>0$, $0\leq r<1<s<2^*_λ-1$; the functions $g,h$ are of indefinite sign and $2^*_λ=\frac{2Q}{Q-2}$ is the critical Sobolev exponent, where $Q=n+(1+λ)m$ is the homogeneous dimension associated to the operator $Δ_λ$. As for the critical case $s=2^*_λ-1$, we prove the existence of at least two non-trivial, non-negative solutions provided $g\geq 0$ and $h\equiv 1$.
title Multiplicity of solutions to a degenerate elliptic equation in the sub-critical and critical cases
topic Analysis of PDEs
url https://arxiv.org/abs/2412.04794