刘健 赵增勤
摘要: 利用變分方法和相应的临界点定理研究一类具有p-双调和算子的非局部椭圆方程Navier边值问题, 在非线性项满足超线性条件时, 得到了两个非平凡广义解的存在性定理.
关键词: 非局部椭圆方程; Navier边值问题; p-双调和算子; 变分方法; 广义解
中图分类号: O175.2文献标志码: A文章编号: 1671-5489(2024)02-0205-06
Generalized Solutions to Nonlocal Elliptic EquationsNavier Boundary Value Problems with p-Biharmonic Operators
LIU Jian1, ZHAO Zengqin2
(1. School of Statistics and Mathematics, Shandong University of Finance and Economics, Jinan 250014, China;
2. School of Mathematical Sciences, Qufu Normal University, Qufu 273165, Shandong Province, China)
Abstract: By using variational methods and corresponding critical points theorems, we investigated a class of nonlocal elliptic equations Navier boundary value problems with p-biharmonic operators. We obtained two existence theorems for nontrivial generalized solutions when nonlinear terms satisfied super-linear conditions.
Keywords: nonlocal elliptic equation; Navier boundary value problem; p-biharmonic operator; variational method; generalized solution
0 引 言
四阶非线性椭圆方程边值问题在微机电系统、 多相系统的相场模型、 固体表面扩散及界面动力学等领域应用广泛. Kirchhoff型椭圆方程是带有非局部项的非线性方程, 该类方程的很多定性性质可解释物理学和工程学中许多非线性模型的物理意义[1]. 为研究拉伸弦的振动, Lions[2]建立了该类方程的抽象框架. 近年来, 利用变分方法结合临界点理论, 对非线性微分方程解的存在性及解存在数量的研究得到广泛关注[3-18]. 例如: 文献[4,14]分别在一定的条件下研究了四阶脉冲弹性梁方程解的存在数量; 文献[5]在非线性项满足一定的增长性条件下, 利用变分方法结合相应的临界点定理研究了一类Kirchhoff型四阶弹性梁方程两个非平凡广义解的存在性.
受上述研究启发, 本文研究下列具有p-双调和算子的Kirchhoff型椭圆方程Navier边值问题广义解的存在性:Δ2pu+K∫Ωup/p+up/pdt(-Δpu+up-2u)=λf(x,u),/在Ω内,
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(責任编辑: 赵立芹)
收稿日期: 2023-06-12.
第一作者简介: 刘 健(1980—), 男, 汉族, 博士, 教授, 从事非线性泛函分析及偏微分方程的研究, E-mail: liujianmath@163.com.
基金项目: 国家自然科学基金(批准号: 11571197)和山东省自然科学基金(批准号: ZR2021MA070).