... coincidence point u = 4. Note that u is also a fixed point of T since S = T, and R is the identity mapping.Nashine et al. Fixed Point Theory and Applications 2011, 2011:5http://www.fixedpointtheoryandapplications.com/content/2011/1/5Page ... 0.(2:24)Nashine et al. Fixed Point Theory and Applications 2011, 2011:5http://www.fixedpointtheoryandapplications.com/content/2011/1/5Page 8 of 16RESEARC H Open AccessFixed point results for contractions ... y)=|x - y| for allx, y Î X,and≤:= {(4, 4), (5, 5), (6, 6), (6, 4)}. Clearly, ≤ is a partial order on X.Nashine et al. Fixed Point Theory and Applications 2011, 2011:5http://www.fixedpointtheoryandapplications.com/content/2011/1/5Page...