Quadruple Fixed Point Theorems under Nonlinear Contractive Conditions in Partially Ordered Metric Spaces
[摘要] We prove a number of quadruple fixed point theorems underϕ-contractive conditions for a mappingF:X4→Xin ordered metric spaces. Also, we introduce an example to illustrate the effectiveness of our results.
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[效力级别] [学科分类] 应用数学
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