数学物理学报(英文版) ›› 2017, Vol. 37 ›› Issue (1): 47-57.doi: 10.1016/S0252-9602(16)30114-X

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A NECESSARY AND A SUFFICIENT CONDITION FOR THE EXISTENCE OF THE POSITIVE RADIAL SOLUTIONS TO HESSIAN EQUATIONS AND SYSTEMS WITH WEIGHTS

Dragos-Patru COVEI   

  1. Department of Applied Mathematics, The Bucharest University of Economic Studies, Bucharest 010374, Romania
  • 收稿日期:2015-12-28 修回日期:2016-04-28 出版日期:2017-02-25 发布日期:2017-02-25
  • 作者简介:Dragos-Patru COVEI,E-mail:patrucovei@yahoo.com

A NECESSARY AND A SUFFICIENT CONDITION FOR THE EXISTENCE OF THE POSITIVE RADIAL SOLUTIONS TO HESSIAN EQUATIONS AND SYSTEMS WITH WEIGHTS

Dragos-Patru COVEI   

  1. Department of Applied Mathematics, The Bucharest University of Economic Studies, Bucharest 010374, Romania
  • Received:2015-12-28 Revised:2016-04-28 Online:2017-02-25 Published:2017-02-25
  • About author:Dragos-Patru COVEI,E-mail:patrucovei@yahoo.com

摘要:

In this article, we consider the existence of positive radial solutions for Hessian equations and systems with weights and we give a necessary condition as well as a sufficient condition for a positive radial solution to be large. The method of proving theorems is essentially based on a successive approximation technique. Our results complete and improve a work published recently by Zhang and Zhou (existence of entire positive k-convex radial solutions to Hessian equations and systems with weights. Applied Mathematics Letters, Volume 50, December 2015, Pages 48-55).

关键词: existence, Keller-Osserman condition, k-Hessian equation and system

Abstract:

In this article, we consider the existence of positive radial solutions for Hessian equations and systems with weights and we give a necessary condition as well as a sufficient condition for a positive radial solution to be large. The method of proving theorems is essentially based on a successive approximation technique. Our results complete and improve a work published recently by Zhang and Zhou (existence of entire positive k-convex radial solutions to Hessian equations and systems with weights. Applied Mathematics Letters, Volume 50, December 2015, Pages 48-55).

Key words: existence, Keller-Osserman condition, k-Hessian equation and system