Quadruple fixed point theorems under nonlinear contractive conditions in partially ordered metric spaces
Summary: We prove a number of quadruple fixed point theorems under \(\phi\)-contractive conditions for a mapping \(F : X^4 \rightarrow X\) in ordered metric spaces. Also, we introduce an example to illustrate the effectiveness of our results.
scientific article; zbMATH DE number 6106356
scientific article