Fixed point theory has fascinated many researchers since 1922 with the celebrated Banach fixed point theorem. There exists a vast
literature on the topic field and this is very active field of research at present. Fixed point theorems are very important tools for
proving the existence and uniqueness of the solutions to various mathematical models (integral and partial equations, variational
inequalities, etc). It can be applied to, for example, variational inequalities, optimization, and approximation theory. The fixed point
theory has been continually studied by many researchers (see, e.g., [1–5] and references contained therein). It is well known that the
contractive-type conditions are very indispensable in the study of fixed point theory.
