Fixed points of generalized e-concave (generalized e-convex) operators and their applications |
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Authors: | Zengqin Zhao Xinsheng Du |
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Institution: | College of Mathematics Sciences, Qufu Normal University, Qufu, Shandong 273165, People's Republic of China |
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Abstract: | In this paper, we present the definitions of generalized e-concave operators and generalized e-convex operators, which are the generalizations of e-concave operators and e-convex operators, respectively. Without compactness or continuity assumption of generalized e-concave operators and generalized e-convex operators, we have proved the existence, uniqueness and monotone iterative techniques of their fixed points. Our results are even new to e-concave operators and e-convex operators. Finally, we apply the results to the singular boundary value problems for second order differential equations. |
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Keywords: | Generalized e-concave operator Generalized e-convex operator Fixed point Two point boundary value problem Increasing operator Decreasing operator |
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