Skip to main content
Log in

Strong convergence theorem for monotone inclusion problem in CAT(0) spaces

  • Published:
Afrika Matematika Aims and scope Submit manuscript

Abstract

In this paper, we introduce Halpern-type proximal point algorithm for approximating a common solution of monotone inclusion problem and fixed point problem. We obtain a strong convergence of the proposed algorithm to a common solution of finite family of monotone inclusion problem and fixed point problem for nonexpansive mappings in complete CAT(0) spaces. Nontrivial application and numerical example were given. Our results complement and extend some recent results in literature.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

  1. Ahmadi Kakavandi, B., Amini, M.: Duality and subdifferential for convex functions on complete CAT(0) metric spaces. Nonlinear Anal. 73, 3450–3455 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  2. Bačák, M.: The proximal point algorithm in metric spaces. Israel J. Math. 194, 689–701 (2013)

    Article  MathSciNet  MATH  Google Scholar 

  3. Berg, I.D., Nikolaev, I.G.: Quasilinearization and curvature of Alexandrov spaces. Geom. Dedicata 133, 195–218 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  4. Bridson, M.R., Haefliger, A.: Metric Spaces of Non-Positive Curvature, Fundamental Principle of Mathematical Sciences, vol. 319. Springer, Berlin, Germany (1999)

    Book  MATH  Google Scholar 

  5. Bruhat, F., Tits, J.: Groupes Réductifs sur un Corp Local, I. Donneés Radicielles Valuées, 41 Institut des Hautes Études Scientifiques, (1972)

  6. Burago, D., Burago, Y., Ivanov, S.: A Course in metric geometry, graduate studies in mathematics, 33 American Mathematical Society, Providence, (2001)

  7. Chaoha, P., Phon-on, A.: A note on fixed point sets in CAT(0) spaces. J. Math. Anal. Appl. 320(2), 983–987 (2006)

    Article  MathSciNet  MATH  Google Scholar 

  8. Dehghan, H., Rooin, J.: Metric projection and convergence theorems for nonexpansive mapping in Hadamard spaces, 5 Oct. (2014) arXiv:1410.1137VI [math.FA]

  9. Dhompongsa, S., Panyanak, B.: On \(\Delta \)-convergence theorems in CAT(0) spaces. Comput. Math. Appl 56, 2572–2579 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  10. Dhompongsa, S., Kirk, W.A., Panyanak, B.: Nonexpansive set-valued mappings in metric and Banach spaces. J. Nonlinear and Convex Anal. 8, 35–45 (2007)

    MathSciNet  MATH  Google Scholar 

  11. Dhompongsa, S., Kirk, W.A., Sims, B.: Fixed points of unifromly Lipschitzian mappings. Nonlinear Amalysis 64(4), 762–772 (2006)

    Article  MATH  Google Scholar 

  12. Espínola, R., Fernández-León, A.: CAT(k)-spaces, weak convergence and fixed points. J. Math. Anal. Appl. 353, 410–427 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  13. Goebel, K., Reich, S.: Uniform Convexity, Hyperbolic Geometry and Nonexpansive Mappings. Marcel Dekker, New York (1984)

    MATH  Google Scholar 

  14. Gromov, M., Bates, S.M.: Metric Structures for Riemannian and Non-Riemannian Spaces, with Appendices by M. Katz, P. Pansu and S. Semmes. In: Lafontaine, S.M., Pansu, P. (eds.) Progr. Math., vol. 152. BirkhNauser, Boston (1999)

    Google Scholar 

  15. Güler, O.: On the convergence of the proximal point algorithm for convex minimization. SIAM J. Control Optim. 29, 403–419 (1991)

    Article  MathSciNet  MATH  Google Scholar 

  16. Jost, J.: Nonpositive Curvature: Geometric and Analytic Aspects, Lectures Math. ETH ZNurich. BirkhNauser, Basel (1997)

    Book  Google Scholar 

  17. Kakavandi, B.A., Amini, M.: Duality and subdifferential for convex functions on complete CAT(0) metric spaces. Nonlinear Anal. 73, 3450–3455 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  18. Kamimura, S., Takahashi, W.: Approximating solutions of maximal monotone operators in Hilbert spaces. J. Approx. Theory 106, 226–240 (2000)

    Article  MathSciNet  MATH  Google Scholar 

  19. Khatibzadeh, H., Ranjbar, S.: Monotone operators and the proximal point algorithm in complete CAT(0) metric spaces. J. Aust. Math Soc. (2017). https://doi.org/10.1017/S1446788716000446

    MathSciNet  MATH  Google Scholar 

  20. Kirk, W.A.: Geodesic geometry and fixed point theory. II, International Conference on Fixed Point Theory and Applications, pp. 113–142. Yokohoma Publisher, Yokohoma (2004)

    MATH  Google Scholar 

  21. Kirk, W.A., Panyanak, B.: A concept of convergence in geodesic spaces. Nonlinear Analysis: Theory, Methods & Applications 56, 3689–3696 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  22. Leustean, L.: Nonexpansive iterations uniformly cover W-hyperbolic spaces. Nonlinear Analysis and Optimization 1: Nonlinear Analysis. Contemporary Math. Am. Math. Soc., Providence 513, 193–209 (2010)

    Article  MATH  Google Scholar 

  23. Lim, T.C.: Remarks on some fixed point theorems. Proc. Amer. Math. Soc. 60, 179–182 (1976)

    Article  MathSciNet  MATH  Google Scholar 

  24. Martinet, B.: R\(\acute{e}\)gularisation d’In\(\acute{e}\)quations Variationnelles par Approximations Successives. Rev.Fran\(\acute{c}\)aise d’Inform. et de Rech. Op\(\acute{e}\)rationnelle 3, 154–158 (1970)

  25. Maingé, P.E.: Strong convergence of projected subgradient methods for nonsmooth and nonstrictly convex minimization. Set-Valued Anal. 16, 899–912 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  26. Ogbuisi, F.U., Mewomo, O.T.: Iterative solution of split variational inclusion problem in real Banach space. Afr. Mat. 28, 295–309 (2017)

    Article  MathSciNet  MATH  Google Scholar 

  27. Ranjbar, S., Khatibzadeh, H.: Strong and \(\Delta \)-convergence to a zero of a monotone operator in CAT(0) spaces, Mediterr. J. Math., 14 (2), Art. 56, 15 pp. (2017)

  28. Reich, S., Shafrir, I.: Nonexpansive iterations in hyperbolic spaces. Nonlinear Anal. 15, 537–558 (1990)

    Article  MathSciNet  MATH  Google Scholar 

  29. Rockafellar, R.T.: Monotone operators and the proximal point algorithm. SIAM J. Control Optim. 14, 877–898 (1976)

    Article  MathSciNet  MATH  Google Scholar 

  30. Ugwunnadi, G.C., Ali, B.: Approximation of Common Fixed Points of Total Asymptotically Nonexpansive mapping in CAT(0) spaces. Advances in Nonlinear Variational Inequalities 19(1), 36–47 (2016)

    MathSciNet  MATH  Google Scholar 

  31. Xu, H.K.: Iterative algorithms for nonlinear operators. J. London. Math. Soc. 2, 240–256 (2002)

    Article  MathSciNet  MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to O. T. Mewomo.

Ethics declarations

Conflict of interest

The authors declare that they have no competing interests.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ugwunnadi, G.C., Izuchukwu, C. & Mewomo, O.T. Strong convergence theorem for monotone inclusion problem in CAT(0) spaces. Afr. Mat. 30, 151–169 (2019). https://doi.org/10.1007/s13370-018-0633-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s13370-018-0633-x

Keywords

Mathematics Subject Classification

Navigation