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Title: | Strong and Δ-convergence for mixed type total asymptotically nonexpansive mappings in CAT(0) spaces | Authors: | Chang, SS Wang, L Lee, HWJ Chan, CK |
Issue Date: | 2013 | Source: | Fixed point theory and applications, 2013, v. 2013, 122, p. 1-16 | Abstract: | It is our purpose in this paper first to introduce the class of total asymptotically nonexpansive nonself mappings and to prove the demiclosed principle for such mappings in CAT(0) spaces. Then, a new mixed Agarwal-O'Regan-Sahu type iterative scheme for approximating a common fixed point of two total asymptotically nonexpansive mappings and two total asymptotically nonexpansive nonself mappings is constructed. Under suitable conditions, some strong convergence theorems and Δ-convergence theorems are proved in a CAT(0) space. Our results improve and extend the corresponding results of Agarwal, O'Regan and Sahu (J. Nonlinear Convex Anal. 8(1):61-79, 2007), Guo et al. (Fixed Point Theory Appl. 2012:224, 2012. doi:10.1186/1687- 1812-2012-224), Sahin et al. (Fixed Point Theory Appl. 2013:12, 2013. doi:10.1186/1687-1812-2013-12), Chang et al. (Appl. Math. Comput. 219:2611-2617, 2012), Khan and Abbas (Comput. Math. Appl. 61:109-116, 2011), Khan et al. (Nonlinear Anal. 74:783-791, 2011), Xu (Nonlinear Anal., Theory Methods Appl. 16(12):1139-1146, 1991), Chidume et al. (J. Math. Anal. Appl. 280:364-374, 2003) and others. | Keywords: | CAT(0) space Demiclosed principle Mixed Agarwal-O'Regan-Sahu type iterative scheme Strong convergence Total asymptotically nonexpansive mappings Total asymptotically nonexpansive nonself mappings Δ-convergence |
Publisher: | Springer | Journal: | Fixed point theory and applications | ISSN: | 1687-1820 | EISSN: | 1687-1812 | DOI: | 10.1186/1687-1812-2013-122 | Rights: | © 2013 Chang et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribu-tion License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in anymedium, provided the original work is properly cited. The following publication Chang, S. S., Wang, L., Lee, H. W. J., & Chan, C. K. (2013). Strong and Δ-convergence for mixed type total asymptotically nonexpansive mappings in CAT(0) spaces. Fixed Point Theory and Applications, 2013, 122, 1-16 is available at https://dx.doi.org/10.1186/1687-1812-2013-122 |
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