数学物理学报(英文版) ›› 2023, Vol. 43 ›› Issue (3): 1175-1194.doi: 10.1007/s10473-023-0311-4

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SUFFICIENT AND NECESSARY CONDITIONS ON THE EXISTENCE AND ESTIMATES OF BOUNDARY BLOW-UP SOLUTIONS FOR SINGULAR p-LAPLACIAN EQUATIONS*

Xuemei Zhang, Shikun Kan   

  1. School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • 收稿日期:2022-01-20 修回日期:2022-06-14 出版日期:2023-06-25 发布日期:2023-06-06
  • 通讯作者: Xuemei Zhang, E-mail: zxm74@sina.com
  • 作者简介:Shikun Kan, E-mail: kskmath@163.com
  • 基金资助:
    Beijing Natural Science Foundation (1212003).

SUFFICIENT AND NECESSARY CONDITIONS ON THE EXISTENCE AND ESTIMATES OF BOUNDARY BLOW-UP SOLUTIONS FOR SINGULAR p-LAPLACIAN EQUATIONS*

Xuemei Zhang, Shikun Kan   

  1. School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • Received:2022-01-20 Revised:2022-06-14 Online:2023-06-25 Published:2023-06-06
  • Contact: Xuemei Zhang, E-mail: zxm74@sina.com
  • About author:Shikun Kan, E-mail: kskmath@163.com
  • Supported by:
    Beijing Natural Science Foundation (1212003).

摘要: Let Ω denote a smooth, bounded domain in RN(N2). Suppose that g is a nondecreasing C1 positive function and assume that b(x) is continuous and nonnegative in Ω, and that it may be singular on Ω. In this paper, we provide sufficient and necessary conditions on the existence of boundary blow-up solutions to the p-Laplacian problem
Δpu=b(x)g(u) for xΩ,u(x)+ as dist(x,Ω)0.
The estimates of such solutions are also investigated. Moreover, when b has strong singularity, the nonexistence of boundary blow-up (radial) solutions and infinitely many radial solutions are also considered.

关键词: singular p-Laplacian equation, boundary blow-up, sub-supersolution method, existence, nonexistence and estimates, sufficient and necessary conditions

Abstract: Let Ω denote a smooth, bounded domain in RN(N2). Suppose that g is a nondecreasing C1 positive function and assume that b(x) is continuous and nonnegative in Ω, and that it may be singular on Ω. In this paper, we provide sufficient and necessary conditions on the existence of boundary blow-up solutions to the p-Laplacian problem
Δpu=b(x)g(u) for xΩ,u(x)+ as dist(x,Ω)0.
The estimates of such solutions are also investigated. Moreover, when b has strong singularity, the nonexistence of boundary blow-up (radial) solutions and infinitely many radial solutions are also considered.

Key words: singular p-Laplacian equation, boundary blow-up, sub-supersolution method, existence, nonexistence and estimates, sufficient and necessary conditions