On Concave Operators

We prove that a u^sub 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^sub 0^-concave operator under a weaker condition.[PUBLICATION ABSTRACT]

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Bibliographic Details
Published inActa mathematica Sinica. English series Vol. 22; no. 2; pp. 577 - 582
Main Authors Liang, Zhan Dong, Wang, Wen Xia, Li, Sheng Jia
Format Journal Article
LanguageEnglish
Published Heidelberg Springer Nature B.V 01.04.2006
Subjects
Banach spaces
Mathematics
Operators
Studies
Uniqueness
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Summary:We prove that a u^sub 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^sub 0^-concave operator under a weaker condition.[PUBLICATION ABSTRACT]
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1439-8516
1439-7617
DOI:10.1007/s10114-005-0687-1