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Convergence theorem for a finite family of asymptotically demicontractive multi-valued mappings in CAT(0) spaces

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this paper, we introduce the class of asymptotically demicontractive multivalued mappings and establish a strong convergence theorem of the modified Mann iteration to a common fixed point of a finite family of asymptotically demicontractive multivalued mappings in a complete CAT(0) space. We also give a numerical example of our iterative method to show its applicability.
Wydawca
Rocznik
Strony
117--130
Opis fizyczny
Bibliogr. 33 poz., wykr.
Twórcy
  • Department of Mathematics, University of Eswatini, Kwaluseni, Eswatini
  • School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa
  • School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa
Bibliografia
  • [1] B. Ahmadi Kakavandi, Weak topologies in complete CAT(0) metric spaces, Proc. Amer. Math. Soc. 141 (2013), no. 3, 1029-1039.
  • [2] K. O. Aremu, C. Izuchukwu, G. C. Ugwunnadi and O. T. Mewomo, On the proximal point algorithm and demimetric mappings in CAT(0) spaces, Demonstr. Math. 51 (2018), no. 1, 277-294.
  • [3] K. O. Aremu, L. O. Jolaoso, C. Izuchukwu and O. T. Mewomo, Approximation of common solution of finite family of monotone inclusion and fixed point problems for demicontractive multivalued mappings in CAT(0) spaces, Ric. Mat. (2019), DOI 10.1007/s11587-019-00446-y.
  • [4] M. Başarır and A. Şahin, On the strong and Δ-convergence of new multi-step and S-iteration processes in a CAT(0) space, J. Inequal. Appl. 2013 (2013), Article ID 482.
  • [5] I. D. Berg and I. G. Nikolaev, Quasilinearization and curvature of Aleksandrov spaces, Geom. Dedicata 133 (2008), 195-218.
  • [6] M. R. Bridson and A. Haefliger, Metric Spaces of Non-positive Curvature, Grundlehren Math. Wiss. 319, Springer, Berlin, 1999.
  • [7] F. E. Browder and W. V. Petryshyn, Construction of fixed points of nonlinear mappings in Hilbert space, J. Math. Anal. Appl. 20 (1967), 197-228.
  • [8] D. Burago, Y. Burago and S. Ivanov, A Course in Metric Geometry, Grad. Stud. Math. 33, American Mathematical Society, Providence, 2001.
  • [9] S.-S. Chang, L. Wang, H. W. J. Lee and C.-K. Chan, Strong and Δ-convergence for mixed type total asymptotically nonexpansive mappings in CAT(0) spaces, Fixed Point Theory Appl. 2013 (2013), Article ID 122.
  • [10] S. S. Chang, L. Wang, H. W. J. Lee, C.-K. Chan and L. Yang, Demiclosed principle and Δ-convergence theorems for total asymptotically nonexpansive mappings in CAT(0) spaces, Appl. Math. Comput. 219 (2012), no. 5, 2611-2617.
  • [11] H. Dehghan, C. Izuchukwu, O. T. Mewomo, D. A. Taba and G. C. Ugwunnadi, Iterative algorithm for a family of monotone inclusion problems in CAT(0) spaces, Quaest. Math. (2019), DOI 10.2989/16073606.20.
  • [12] H. Dehghan and J. Rooin, Metric projection and convergence theorems for nonexpansive mappings in Hadamard spaces, preprint (2014), https://arxiv.org/abs/1410.1137v1.
  • [13] S. Dhompongsa, W. A. Kirk and B. Panyanak, Nonexpansive set-valued mappings in metric and Banach spaces, J. Nonlinear Convex Anal. 8 (2007), no. 1, 35-45.
  • [14] S. Dhompongsa, W. A. Kirk and B. Sims, Fixed points of uniformly Lipschitzian mappings, Nonlinear Anal. 65 (2006), no. 4, 762-772.
  • [15] S. Dhompongsa and B. Panyanak, On Δ-convergence theorems in CAT(0) spaces, Comput. Math. Appl. 56 (2008), no. 10, 2572-2579.
  • [16] N. Hussain and M. A. Khamsi, On asymptotic pointwise contractions in metric spaces, Nonlinear Anal. 71 (2009), no. 10, 4423-4429.
  • [17] F. O. Isiogugu, Demiclosedness principle and approximation theorems for certain classes of multivalued mappings in Hilbert spaces, Fixed Point Theory Appl. 2013 (2013), Article ID 61.
  • [18] C. Izuchukwu, H. A. Abass and O. T. Mewomo, Viscosity approximation method for solving minimization problem and fixed point problem for nonexpansive multivalued mapping in CAT(0) spaces, Ann. Acad. Rom. Sci. Ser. Math. Appl. 11 (2019), no. 1, 130-157.
  • [19] C. Izuchukwu, K. O. Aremu, A. A. Mebawondu and O. T. Mewomo, A viscosity iterative technique for equilibrium and fixed point problems in a Hadamard space, Appl. Gen. Topol. 20 (2019), no. 1, 193-210.
  • [20] C. Izuchukwu, A. A. Mebawondu, K. O. Aremu, H. A. Abass and O. T. Mewomo, Viscosity iterative techniques for approximating a common zero of monotone operators in a Hadamard space, Rend. Circ. Mat. Palermo (2) (2019), DOI 10.1007/s12215-019-00415-2.
  • [21] W. A. Kirk, Geodesic geometry and fixed point theory, in: Seminar of Mathematical Analysis (Malaga/Seville 2002/2003), Colecc. Abierta 64, Universidad de Sevilla, Seville (2003), 195-225.
  • [22] W. A. Kirk, Fixed point theorems in CAT(0) spaces and ℝ-trees, Fixed Point Theory Appl. 2004 (2004), no. 4, 309-316.
  • [23] W. A. Kirk, Geodesic geometry and fixed point theory. II, in: International Conference on Fixed Point Theory and Applications, Yokohama Publishers, Yokohama (2004), 113-142.
  • [24] W. A. Kirk and B. Panyanak, A concept of convergence in geodesic spaces, Nonlinear Anal. 68 (2008), no. 12, 3689-3696.
  • [25] X.-D. Liu and S.-s. Chang, Convergence theorems on total asymptotically demicontractive and hemicontractive mappings in CAT(0) spaces, J. Inequal. Appl. 2014 (2014), Article ID 436.
  • [26] P.-E. Maingé, Strong convergence of projected subgradient methods for nonsmooth and nonstrictly convex minimization, Set-Valued Anal. 16 (2008), no. 7-8, 899-912.
  • [27] S. B. Nadler, Jr., Multi-valued contraction mappings, Pacific J. Math. 30 (1969), 475-488.
  • [28] B. Nanjaras and B. Panyanak, Demiclosed principle for asymptotically nonexpansive mappings in CAT(0) spaces, Fixed Point Theory Appl. 2010 (2010), Article ID 268780.
  • [29] N. Shahzad and H. Zegeye, Strong convergence results for nonself multimaps in Banach spaces, Proc. Amer. Math. Soc. 136 (2008), no. 2, 539-548.
  • [30] W. Takahashi, A convexity in metric space and nonexpansive mappings. I, Kodai Math. Sem. Rep. 22 (1970), 142-149.
  • [31] G. C. Ugwunnadi, C. Izuchukwu and O. T. Mewomo, On nonspreading-type mappings in Hadamard spaces, Bol. Soc. Parana. Mat. (3) (2018), DOI 10.5269/bspm.41768.
  • [32] G. C. Ugwunnadi, C. Izuchukwu and O. T. Mewomo, Strong convergence theorem for monotone inclusion problem in CAT(0) spaces, Afr. Mat. 30 (2019), no. 1-2, 151-169.
  • [33] H.-K. Xu, Iterative algorithms for nonlinear operators, J. Lond. Math. Soc. (2) 66 (2002), no. 1, 240-256.
Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-cbdcd3ad-0e5a-4e2a-a4a8-fca2fb51b41d
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