“…But the convergence rate of the Mann algorithm is slow in general. Due to the fact that fast convergence is required in many practical applications (see, [8,16,17,27]), many researchers constructed fast iterative algorithms by using inertial extrapolation methods (see [1,5,7,9,20,[32][33][34]). Specifically, Mainge [22] developed the following algorithm by employing the Mann algorithm together with inertial extrapolation method:…”