... Aubin and I. Ekeland, Applied Nonlinear Analysis, Pure and Applied Mathematics, John Wiley &Sons, New York, NY, USA, 1984.19 J P. Aubin and H. F rankowska, Set-Valued Analysis, vol. 2 of ... extensions of Caristi’stheorem,” Nonlinear Analysis: Theory, Methods & Applications, vol. 47, no. 4, pp. 2765–2778, 2001.28 I. Ekeland, “On the variational principle,” Journal of Mathematical Analysis ... called a generalized sequence of iterations startingat w0 x of the system X, Tfor details see Yuan 20, page 557, Tarafdar and Vyborny21, and Tarafdar and Yuan 22. Each dynamic process...