Abstract
Let \(C\) be a nonempty closed convex subset of a real Hilbert space \(H\). Let \(\{T_i\}^{\infty }_{i=1}:C\rightarrow H\) be an infinite family of generalized asymptotically nonexpansive nonself mappings. By using a specific way of choosing the indexes of the involved mappings, we prove strong convergence of Mann’s type iteration to a common fixed point of \(\{T_i\}^{\infty }_{i=1}\) without the compactness assumption imposed either on \(T\) or on \(C\) provided that the interior of common fixed points is nonempty. The results extend previous results restricted to the situation of at most finite families of such mappings.
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Goebel, K., Kirk, W.A.: A fixed point theorem for asymptotically nonexpansive mappings. Proc. Amer. Math. Soc. 35, 171–174 (1972)
Chang, S.S., Cho, Y.J., Zhou, H.: Demi-closed principle and weak convergence problems for asymptotically nonexpansive mappings. J. Korean Math. Soc. 38, 1245–1260 (2001)
Oslike, M.O., Udomene, A.: Weak and strong convergence theorems for fixed points of asymptotically nonexpansive mappings. Math. Comput. Model. 32, 1181–1191 (2000)
Schu, J.: Iterative construction of fixed points of asymptotically nonexpansive mappings. J. Math. Anal. Appl. 158, 407–413 (1991)
Zhou, H.Y., Chang, S.S.: Convergence of an implicit iteration process for a finite family of asymptotically nonexpansive mappings in Banach spaces. Numer. Funct. Anal. 23, 911–921 (2002)
Schu, J.: Weak and strong convergence of fixed points of asymptotically nonexpansive mappings. Bull. Aust. Math. Soc. 43, 153–159 (1991)
Rhoades, B.E.: Fixed point iterations for certain nonlinear mappings. J. Math. Anal. Appl. 183, 118–120 (1994)
Reich, S.: Weak convergence theorems for nonexpansive mappings in Banach spaces. J. Math. Anal. Appl. 67, 274–276 (1979)
Tan, K.K., Xu, H.K.: Approximating fixed points of non-expansive mappings by Ishikawa iteration process. J. Math. Anal. Appl. 178, 301–308 (1993)
Mann, W.R.: Mean value methods in iteration. Proc. Amer. Math. Soc. 4, 506–510 (1953)
Byrne, C.: A unified treatment of some iterative algorithms in signal processing and image reconstruction. Inverse Prob. 20, 103–120 (2004)
Reich, S.: Weak convergence theorems for nonexpansive mappings in Banach spaces. J. Math. Anal. Appl. 67, 274–276 (1979)
Chidume, C.E., Shahzad, N.: Strong convergence of an implicit iteration process for a finite family of nonexpansive mappings. Nonlinear Anal. 62, 1149–1156 (2005)
Chidume, C.E., Zegeye, H., Shahzad, N.: Convergence theorems for a common fixed point of a finite family of nonself nonexpansive mappings, Fixed Point Theory Appl. pp. 233–241 (2005)
Shioji, N., Takahashi, W.: Strong convergence of approximated sequences for nonexpansive mappings in Banach spaces. Proc. Amer. Math. Soc. 125, 3641–3645 (1997)
Zegeye, H., Shahzad, N.: Strong convergence theorems for a finite family of nonexpansive mappings and semigroups via the hybrid method. Nonlinear Anal. 72(1), 325–329 (2010)
Genel, A., Lindenstrauss, J.: An example concerning fixed points. Israel J. Math. 22, 81–86 (1975)
Gler, O.: On the convergence of the proximal point algorithm for convex optimization. SIAM J. Control Optim. 29, 403–419 (1991)
Nakajo, K., Takahashi, W.: Strong convergence theorems for nonexpansive mappings and nonexpansive semi-groups. J. Math. Anal. Appl. 279, 372–379 (2003)
Chidume, C.E., Ofoedu, E.U., Zegeye, H.: Strong and weak convergence theorems for asymptotically nonexpansive mappings. J. Math. Anal. Appl. 280, 364–374 (2003)
Wang, L.: Strong and weak convergence theorems for common fixed points of nonself asymptotically nonexpansive mappings. J. Math. Anal. Appl. 323, 550–557 (2006)
Deng, L., Liu, Q.: Iterative scheme for nonself generalized asymptotically quasi-nonexpansive mappings. Appl. Math. Comput. 205, 317–324 (2008)
Zhou, H.Y., Cho, Y.J., Kang, S.M.: A new iterative algorithm for approximating fixed points for asymptotically nonexpansive mappings, Fixed Point Theory and Appl. 7, Article 64874, p. 10 (2008)
Shahzad, N., Zegeye, H.: Strong convergence of an implicit iteration process for a finite family of generalized asymptotically quasi-nonexpansive maps. Appl. Math. Comput. 189, 1058–1065 (2007)
Zegeye, H., Shahzad, N.: Convergence of Manns type iteration method for generalized asymptotically nonexpansive mappings. Comput. Math. Appl. 62, 4007–4014 (2011)
Alber, Ya.: Metric and generalized projection operators in Banach spaces: properties and Applications, In: Kartsatos, A.G. (ed.) Theory and applications of nonlinear operators of accretive and monotone type, In: Lecture Notes in Pure and Appl. Math., vol. 178, Dekker, New York, pp. 15–50 (1996)
Kamimura, S., Takahashi, W.: Strong convergence of proximal-type algorithm in a Banach space. SIAM J. Optim. 13, 938–945 (2002)
Reich, S.: A weak convergence theorem for the alternating method with Bergman distance, In: Kartsatos, A.G. (ed.) Theory and Applications of Nonlinear Operators of Accretive and Monotone Type. In: Lecture Notes in Pure and Appl. Math., vol. 178, Dekker, New York, pp. 313–318 (1996)
Osilike, M.O., Aniagbosor, S.C., Akuchu, B.G.: Fixed points of asymptotically demicontractive mappings in arbitrary Banach spaces. PanAmer. Math. J. 12, 77–88 (2002)
Takahashi, W.: Nonlinear functional analysis-fixed point theory and applications. Yokohamaa Publishers Inc., Yokohama (2000)
Kim, T.H., Choi, J.W.: Asymptotic behavior of almost-orbits of non-Lipschitzian mappings in Banach spaces. Math. Japon. 38, 191–197 (1993)
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The author is greatly grateful to the referees for their useful suggestions by which the contents of this article are improved. This work was supported by the National Natural Science Foundation of China (Grant No.11061037).
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Deng, WQ. Strong convergence of Mann’s type iteration method for an infinite family of generalized asymptotically nonexpansive nonself mappings in Hilbert spaces. Optim Lett 8, 533–542 (2014). https://doi.org/10.1007/s11590-012-0595-0
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DOI: https://doi.org/10.1007/s11590-012-0595-0
Keywords
- Equilibrium problems
- Monotone mappings
- Relatively quasi-nonexpansive mappings
- Strong convergence
- Variational inequality problems