On concave operators

被引：10
作者：
Liang, ZD [1 ]
Wang, WX
Li, SJ
机构：
[1] Shanxi Univ, Dept Math, Taiyuan 030006, Peoples R China
[2] Zhengzhou Univ, Dept Math, Zhengzhou 460052, Peoples R China
[3] Taiyuan Teachers Coll, Dept Math, Taiyuan 030012, Peoples R China
[4] Shanxi Univ, Dept Math, Taiyuan 030006, Peoples R China
来源：
ACTA MATHEMATICA SINICA-ENGLISH SERIES | 2006年 / 22卷 / 02期
基金：
中国国家自然科学基金;
关键词：
cone; increasing operator; Banach space; concave operator;
D O I：
10.1007/s10114-005-0687-1
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
We prove that a u(0)-concave operator can include other concave operators, and derive a sufficient and necessary condition for the existence and uniqueness of the fixed point of a kind of u(0)-concave operator under a weaker condition.
引用
收藏
页码：577 / 582
页数：6
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