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arXiv 2406.07985math.AP
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强次线性情形下一类 $(2, q)$-Laplacian 方程的规范化解

Normalized solutions to a class of $(2, q)$-Laplacian equationsin the strongly sublinear regime

Rui Ding, Chao Ji, Patrizia Pucci

AI总结:

本文针对强次线性非线性项的 $(2,q)$-Laplacian 规范化问题,通过逼近问题与最低能量解收敛分析证明最低能量解存在,并在适当函数子空间中证明无穷多解。

摘要:

本文研究下述 $(2, q)$-Laplacian 方程规范化解的存在性与多重性:方程为 $-Δu-Δ_q u+λu=g(u)$,其中 $x\in\mathbb{R}^N$,并满足 $\int_{\mathbb{R}^N}u^2\\,dx=c^2$;这里 $1<q<N$,$Δ_q=\operatorname{div}(|\nabla u|^{q-2}\nabla u)$ 是 $q$-Laplacian 算子,$λ$ 为 Lagrange 乘子,$c>0$ 为常数。非线性项 $g:\mathbb{R}\rightarrow\mathbb{R}$ 连续,并且允许 $g$ 在原点附近具有强次线性行为,即 $\lim_{s\rightarrow 0}g(s)/s=-\infty$,其中包括对数非线性项 $g(s)=s\log s^2$。作者考虑了一族可设置在 $H^1(\mathbb{R}^N)\cap D^{1,q}(\mathbb{R}^N)$ 中的逼近问题及其相应的最低能量解。随后证明这一族解收敛到原问题的一个最低能量解。此外,在关于 $g$ 的某些假设下,这些假设使作者能够在 $H^1(\mathbb{R}^N)\cap D^{1,q}(\mathbb{R}^N)$ 的适当子空间中开展研究,作者证明了上述 $(2, q)$-Laplacian 方程存在无穷多个解。

英文摘要:

In this paper, we consider the existence and multiplicity of normalized solutions for the following $(2, q)$-Laplacian equation \begin{equation}\label{Equation1} \left\{\begin{aligned} &-Δu-Δ_q u+λu=g(u),\quad x \in \mathbb{R}^N, &\int_{\mathbb{R}^N}u^2 d x=c^2, \end{aligned}\right. \tag{$\mathscr E_λ$} \end{equation} where $1<q<N$, $Δ_q=\operatorname{div}\left(|\nabla u|^{q-2} \nabla u\right)$ is the $q$-Laplacian operator, $λ$ is a Lagrange multiplier and $c>0$ is a constant. The nonlinearity $g:\mathbb{R}\rightarrow \mathbb{R}$ is continuous and the behaviour of $g$ at the origin is allowed to be strongly sublinear, i.e., $\lim \limits _{s \rightarrow 0} g(s) / s=-\infty$, which includes the logarithmic nonlinearity $$ g(s)= s \log s^2. $$ We consider a family of approximating problems that can be set in $H^1\left(\mathbb{R}^N\right)\cap D^{1, q}\left(\mathbb{R}^N\right)$ and the corresponding least-energy solutions. Then, we prove that such a family of solutions converges to a least-energy solution to the original problem. Additionally, under certain assumptions about $g$ that allow us to work in a suitable subspace of $H^1\left(\mathbb{R}^N\right)\cap D^{1, q}\left(\mathbb{R}^N\right)$, we prove the existence of infinitely many solutions of the above $(2, q)$-Laplacian equation.

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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