On the Iterations of a Sequence of Strongly Quasi-nonexpansive Mappings   with Applications
  In this paper, we study $\Delta$- convergence of iterations for a sequence of strongly quasi-nonexpansive mappings as well as the strong convergence of the Halpern type regularization of them in Hadamard spaces. Then, we give some their applications in iterative methods, convex and pseudo-convex minimization(proximal point algorithm), fixed point theory and equilibrium problems. The results extend several new results in the literature and some of them seem new even in Hilbert spaces. 
Hadi Khatibzadeh and Vahid Mohebbi
math.FA