数学物理学报 ›› 2000, Vol. 20 ›› Issue (4): 461-467.

• 论文 • 上一篇    下一篇

一类零点为次线性的椭圆方程的可解性

  

  1. (南开大学数学所 天津 300071)

    (浙江大学应用数学系 杭州玉泉 310027)

  • 出版日期:2000-09-08 发布日期:2000-09-08

On a Nonlinear Elliptic Equation with Sublinear Term at Origin

  1. (Nankai Institute of Mathematics, Nankai University, Tianjin 300071, China)

    (Department of Mathematics, Zhejiang University, Hangzhou 310027, Zhejiang, China)

  • Online:2000-09-08 Published:2000-09-08

摘要:

 该文考虑

-Δu = g(x)|u|q-2u+λ|u|p-2u+f(x), x∈Ω,

u|Ω=0, g,f∈L(Ω), 1

给出了g(x)是变号函数、负值函数时,方程的可解性、正解的存在性以及多解性.

关键词: 变号函数, 次线性项, 超线性项, 上下解方法, 变分方法.

Abstract:

This paper deals with a class of semilinear elliptic Dirichlet boundary value problems with the sign-changing or negative coefficient funtion for concave nonlinearities of the form |u|q-2u,1

Key words: Sign-changing function, sublinear terms, superlinear terms, barrier method, variational method.

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