We present new results on the existence and uniqueness of tripled fixed points for nonlinear mappings in partially ordered complete metric spaces that extend the results in the previous works: Berinde and Borcut, 2011, Borcut and Berinde, 2012, and Borcut, 2012. An example and an application to support our new results are also included in the paper.
"Tripled Fixed Point Theorems for Mixed Monotone Kannan Type Contractive Mappings." J. Appl. Math. 2014 1 - 8, 2014. https://doi.org/10.1155/2014/120203