Results 11 to 20 of about 343 (69)

Related fixed points for set valued mappings on two metric spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 3, Page 205-210, 2000., 2000
Some related fixed points theorems for set valued mappings on two complete and compact metric spaces are proved.
Brian Fisher, Duran Türkoglu
wiley   +1 more source

Some results on maximal elements

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 6, Page 409-413, 2000., 2000
We prove some results on maximal elements using the KKM‐map principle.
Antonio Carbone
wiley   +1 more source

Fixed points, intersection theorems, variational inequalities, and equilibrium theorems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 24, Issue 2, Page 73-93, 2000., 2000
From a fixed point theorem for compact acyclic maps defined on admissible convex sets in the sense of Klee, we first deduce collectively fixed point theorems, intersection theorems for sets with convex sections, and quasi‐equilibrium theorems. These quasi‐equilibrium theorems are applied to give simple and unified proofs of the known variational ...
Sehie Park
wiley   +1 more source

A note on complementarity problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 21, Issue 3, Page 621-623, 1998., 1998
In this paper we prove a result of complementarity problem where compact condition is somewhat relaxed.
Antonio Carbone
wiley   +1 more source

Some results on invariant approximation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 3, Page 483-487, 1994., 1993
In this paper results on Invariant approximations, extending and unifying earlier results are given. Several interesting results are derived as corollaries.
Antonio Carbone
wiley   +1 more source

An extragradient iterative scheme for common fixed point problems and variational inequality problems with applications

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
In this paper, by combining a modified extragradient scheme with the viscosity approximation technique, an iterative scheme is developed for computing the common element of the set of fixed points of a sequence of asymptotically nonexpansive mappings and
Petruşel Adrian, Sahu D.R., Sagar Vidya
doaj   +1 more source

Fixed point results for multivalued mappings of Ćirić type via F-contractions on quasi metric spaces

open access: yesOpen Mathematics, 2020
In this paper, we present some fixed point results for multivalued mappings with both closed values and proximinal values on left K-complete quasi metric spaces. We also provide a nontrivial example to illustrate our results.
Shatanawi Wasfi, Altun Ishak, Dağ Hacer
doaj   +1 more source

On some fixed point theorems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 12, Issue 1, Page 61-64, 1989., 1987
In this paper we prove a fixed point theorem for inward mappings uing a well‐known result of Ky Fan type in Hilbert space setting.
D. Roux, S. P. Singh
wiley   +1 more source

Local expansions and accretive mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 6, Issue 3, Page 419-429, 1983., 1983
Let X and Y be complete metric spaces with Y metrically convex, let D ⊂ X be open, fix u0 ∈ X, and let d(u) = d(u0, u) for all u ∈ D. Let f : X → 2Y be a closed mapping which maps open subsets of D onto open sets in Y, and suppose f is locally expansive on D in the sense that there exists a continuous nonincreasing function c : R+ → R+ with ∫+∞c(s)ds =
W. A. Kirk
wiley   +1 more source

A fixed point theorem for contraction mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 5, Issue 2, Page 301-304, 1982., 1981
Let S be a closed subset of a Banach space E and f : S → E be a strict contraction mapping. Suppose there exists a mapping h : S → (0, 1] such that (1 − h(x))x + h(x)f(x) ∈ S for each x ∈ S. Then for any x0 ∈ S, the sequence {xn} in S defined by xn+1 = (1 − h(xn))xn + h(xn)f(xn), n ≥ 0, converges to a u ∈ S. Further, if ∑h(xn) = ∞, then f(u) = u.
V. M. Sehgal
wiley   +1 more source

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