数学物理学报 ›› 1997, Vol. 17 ›› Issue (4): 403-411.

• 论文 • 上一篇    下一篇

Rn上一类半线性椭圆方程解的存在唯一性和渐近性质

杨海涛1, 吴绍平2   

  1. 1. 浙江大学数学系 杭州 310027;
    2. 中国科技大学数学系 合肥 230026
  • 收稿日期:1995-11-13 出版日期:1997-08-26 发布日期:1997-08-26
  • 基金资助:

    国家自然科学基金;浙江省自然科学基金

The Existence Uniqueness and Asymptotic Properties of a Class of Semilinear Elliptic Equations

Yang Haitao1, Wu Shaoping2   

  1. Zhejiang University
  • Received:1995-11-13 Online:1997-08-26 Published:1997-08-26

摘要:

用上下解方法和位势估计,研究Rn上具有次线性项加超线性项半线性椭圆方程
-△u=a(x)ua+λb(x)us,xRn,
给出了其有界正解的存在性、唯一性和渐近性质,其中0 < α < 1,s > 1为常数,λ > 0参数.

关键词: 半线性椭圆方程, 上、下解, Newton位势

Abstract:

In this paper, using sub and supsolution mecthods and potential estimations, we study following semilinear elliptic equation on RN with sublinear and suplinear nonlinearities:
-△u=a(x)ua+λb(x)us,xRN
The existence uniqueness and asymptotic properties of bounded positive solution are given, where 0 < α < 1,s > 1 is a constant,λ > O is a paramcter.

Key words: Semilinear elliptic equation, Subsolution, Supsolution, Newton potential