Abstract
We iteratively generate a sequence of measurable mappings and study necessary conditions for its convergence to a random fixed point of random nonexpansive operator. A random fixed point theorem for random nonexpansive operator, relaxing the convexity condition on the underlying space, is also proved. As an application, we obtained random fixed point theorems for Caristi type random operators.
Similar content being viewed by others
References
R. P. Agarwal, D. O’Regen and N. Shahzad,Fixed point theory for generalized contractive maps of Meir-Keeler type, Math. Nachr.276 (2004), 3–22.
J. P. Aubin and H. Frankowska,Set-Valued Analysis, Birkhauser, Boston, 1990.
J. S. Bae,Fixed point theorems for weakly contractive multivalued maps, J. Math. Anal. Appl.,284 (2003), 690–697.
I. Beg,Minimal displacement of random variables under Lipschitz random maps, Topological Methods in Nonlinear Analysis.,19 (2002), 391–397.
I. Beg,Approximation of random fixed points in normed spaces, Nonlinear Analysis.,51 (2002), 1363–1372.
I. Beg and N. Shahzad,Random fixed points of random multivalued operators on Polish spaces, Nonlinear Anal.,20 (1993), 835–847.
I. Beg and N. Shahzad,On random approximation and a random fixed point theorem for multivalued mappings defined on unbounded sets in Hilbert spaces, Stochastic Anal. Appl.,14 (1996), 507–511.
I. Beg, A. R. Khan and N. Hussain,Approximations of *-nonexpansive random multivalued operators on Banach spaces, J. Aust. Math. Soc.,76 (2004), 51–66.
A. T. Bharucha-Reid,Random Integral Equations, Academic Press, New York, 1972.
A. T. Bharucha-Reid,Fixed point theorems in probabilistic analysis, Bull. Amer. Math. Soc.,82 (1976), 641–657.
H. Brezis and F. E. Browder,A general principle on ordered sets in nonlinear functional analysis, Adv. Math.,21 (1976), 355–364.
J. Caristi,Fixed point theorems for mapping satisfying inwardness conditions, Trans. Amer. Math. Soc.,215 (1976), 241–251.
J. B. Diaz and F. T. Metcalf,On the structure of the set of subsequential limit points of successive approximations, Bull. Amer. Math. Soc.,73 (1967), 516–519.
J. Gornicki,Weak convergence theorems for asymptotically nonexpansive mappings in uniformly convex Banach spaces, Comment. Math. Univ. Carolin.30 (1989), 249–252.
O. Hans,Reduzierende zulliällige transformaten, Czechoslovak Math. J.,7 (1957), 154–158.
O. Hans,Random operator equations, in: Proceedings of the Fourth Berkeley Symposium on Mathematical Statistics and Probability, Vol. II, Part I, University of California Press, Berkeley., 1961, 85–202.
G. Isac and J. Li,The convergence property of Ishikawa iteration schemes in noncompact subsets of Hilbert spaces and its applications to complementarity theory, Computers and Maths. with applications,47 (2004), 1745–1751.
S. Itoh,Random fixed point theorems with an application to random differential equations in Banach spaces, J. Math. Anal. Appl.,67 (1979), 261–273.
K. Kuratowski and C. Ryll-Nardzewski,A general theorem on selectors, Bull. Acad. Polon. Sci. Ser. Sci. Math. Astronom. Phys.,13 (1965), 397–403.
E. Lami Dozo,Multivalued nonexpansive mappings and Opial condition, Proc Amer. Math. Soc.,38 (1973), 286–292.
Z. Opial,Weak convergence of the sequence of successive approximation for nonexpansive mappings, Bull. Amer. Math. Soc.,73 (1967), 591–597.
N. S. Papageorgiou,Random fixed point theorems for measurable multifunctions in Banach spaces, Proc. Amer. Math. Soc.,97 (1986), 507–514.
N. Shahzad,Random fixed points of K-set- and pseudo-contractive random maps, Nonlinear Analysis.,57 (2004), 173–181.
A. Spacek,Zufállige gleichungen, Czechoslovak Math. J.,5 (1955), 462–466.
H. K. Xu,Some random fixed point theorems for condensing and nonexpansive operators, Proc. Amer. Math. Soc.,110 (1990), 103–123.
H. K. Xu,Random fixed point theorems for nonlinear uniformly Lipschitzian mappings, Nonlinear Anal.,26 (1996), 1301–1311.
H. K. Xu and I. Beg,Measurability of fixed point sets of multivalued random operators, J. Math. Anal. Appl.,225 (1998), 62–72.
E. Zeidler,Nonlinear Functional Analysis I: Fixed Point Theory, Springer, New York, 1986.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Beg, I., Abbas, M. Random fixed point theorems for Caristi type random operators. J. Appl. Math. Comput. 25, 425–434 (2007). https://doi.org/10.1007/BF02832367
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02832367