Convergence Theorems for Modified Mann Reich-Sabach Iteration Scheme for Approximating the Common Solution of Equilibrium Problems and Fixed Point Problems in Hilbert Spaces with Numerical Examples

Authors

  • Felicia. O. Isiogugu* University of Nigeria, Nsukka, Nigeria
  • P. Pillay School of Mathematics, Statistics and Computer Sciences
  • C. C. Okeke University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
  • F. U. Ogbuisi University of Nigeria, Nsukka, Nigeria
  • P. U.Nwokoro University of Nigeria, Nsukka, Nigeria

Keywords:

Hilbert spaces, k-strictly pseudocontractive-type mapping, strong convergence, strict fixed point sets, equilibrium problem, finite families

Abstract

Communication in Physical Sciences 2020, 5(4): 482-496

Received 25 May 2017/Revised 9 May 2018/Accepted 20 February 2020

It is proved that the modified Reich-Sabach iteration scheme introduced recently by Isiogugu et al. in a real Hilbert space , converges strongly to a common element of the fixed point sets of a finite family of multi-valued strictly pseudocontractive-type mappings and the set of solutions of a finite family of equilibrium problems. This work is a continuation of the study on the computability of algorithms for approximating the solutions of equilibrium problems for bifunctions involving the construction of the sequences  and , from an arbitrary , where , , while  is the projection map and  is the sequence of the resolvent of the bifunction. The obtained results improve, complement and extend many results on equilibrium problems, multi-valued and single-valued mappings in the contemporary literature.

Downloads

Download data is not yet available.

Author Biographies

Felicia. O. Isiogugu*, University of Nigeria, Nsukka, Nigeria

Department of Mathematics

School of Mathematics, Statistics and Computer Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa

P. Pillay, School of Mathematics, Statistics and Computer Sciences

School of Mathematics, Statistics and Computer Sciences,

C. C. Okeke, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa

School of Mathematics, Statistics and Computer Sciences,

F. U. Ogbuisi, University of Nigeria, Nsukka, Nigeria

Department of Mathematics

P. U.Nwokoro, University of Nigeria, Nsukka, Nigeria

Department of Mathematics

References

Blum, E. & Oettli, W. (1994). From optimization and variational inequalities to equilibrium problems, Mathematic Students, 63, pp. 123-145.

Chidume, C. E., Chidume, C. O., DjittÃ, N. & Minjibir, M. S. (2013). Convergence theorems for fixed points multivalued strictly pseudocontractive mappings in Hilbert spaces. Abstract and Applied Analysis, doi.org/10.1155/2013/629468

Combettes, P. L. &. Hirstoaga, S. A. (2005). Equilibrium programming in Hilbert spaces, Journal of Nonlinear Convex Analysis, 6, pp. 117-136.

Isiogugu, F. O. (2013). Demiclosedness principle and approximation theorems for certain classes of multivalued mappings in Hilbert spaces, Fixed Point Theory and Applications, 6, https://doi.org/10.1186/1687-1812-2013-61

Isiogugu, F. O. (2016). Approximation of a common element of the fixed point sets of multivalued strictly pseudocontractive-Type mappings and the set of solutions of an equilibrium problem in hilbert spaces, Abstract and Applied Analysis, https://doi.org/10.1155/2016/3094838

Isiogugu, F. O., Pillay, P. & Baboolal, D. (2016). Approximation of a common element of the set of fixed points of multi-valued type-one demicontractive-type mappings and the set of solutions of an equilibrium problem in Hilbert spaces, Journal of Nonlinear and Convex Analysis, 17, 6, pp. 1181-1197.

Isiogugu, F. O., Pillay, P. & Osilike, M. O. (2016). On approximation of fixed points of multi-valued quasi-nonexpansive mappings, Journal of Nonlinear and Convex Analysis,17, 7, pp. 1303-1310.

Isiogugu, F. O., Pillay, P. Okeke, C. C. & Ogbuisi, F. U. (2016). A Modified Reich-SabachIteration Scheme for Approximating a Common Element of the Solutions of Equilibrium Problems and Fixed Point Problems in Hilbert Spaces, Global Journal of Pure and Applied Mathematics, 12, 6, pp. 5185–5204

Isiogugu, F. O., Udomene, A. & Osilike, M. O. (2011). Approximation of common solutions of equilibrium and fixed point problems for certain class of mappings in Hilbert spaces. Journal of Nigerian Mathematical Society, 30, pp. 179-194.

Jaiboon, C. & Kumam, P. (2010) Strong convergence theorems for solving equilib- rium problems and fixed point problems of ξ- strictly pseudocontraction mappingsby two hybrid projection methods. Journal of Computation and Applied Mathematics, doi:10.1016/j.cam.2010.01.012.

Moudafi, A. (2003). Second-order differencial proximal methods for equlibrium problems. Journal of Inequality in Pure and Applied Mathematics, 4, pp. 3-15

Qin, L. & Wang, L. (2011). An iteration method for solving equilibrium problems, common fixed point problems of strictly pseudocontractive mappings of rowder-Petryshyn type in Hilbert spaces, International Mathematical Forum, 6, 2, pp. 63 - 74

Reich, S. & Sabach, S. (2012). Three strong convergence theorems regarding iterative methods for solving equilibrium problems in reflexive Banach spaces. In: Reich S, Zaslavski AJ, editors. Optimization theory and related topics. Contemporary Mathematics. Providence (RI): American Mathematical Society, 568, pp. 225–240

Tada, A. & Takahashi, W. (2008). A. Tada and W. Takahashi, “Strong convergence theorem for an equilibrium problem and a nonexpansive mapping,” in Nonlinear Analysis and Convex Analysis, W. Takahashi and T. Tanaka, Eds., pp. 609–617, Yokohama Publishers, Yokohama, Japan, 2007

Takahashi, W. & Zembayashi, K. (2008). Strong and weak convergence theorems for equilibruim problems and relatively nonexpansive mappings in Banach spaces, Nonlinear Analysis, doi:10.1016/j.na.2007.11.031.

Downloads

Published

2020-07-30