Results 11 to 20 of about 315,233 (274)

New common fixed point theorems for multivalued maps

open access: yesApplied General Topology, 2014
Common fixed point theorems for a new class of multivalued maps are obtained, which generalize and extend classical fixed point theorems of Nadler and Reich and some recent Suzuki type fixed point theorems.
S. L. Singh   +3 more
doaj   +1 more source

Almost fixed point theorems [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
A closed cover version of Hazewinkel and van de Vel’s theorem on the existence of γ \gamma -almost fixed points for set-valued functions and for real Hausdorff topological vector spaces is proved. Generalizations of well-known fixed point theorems of the Schauder-Tychonoff type are presented.
openaire   +2 more sources

Near Fixed Point Theorems in Hyperspaces

open access: yesMathematics, 2018
The hyperspace consists of all the subsets of a vector space. It is well-known that the hyperspace is not a vector space because it lacks the concept of inverse element. This also says that we cannot consider its normed structure, and some kinds of fixed
Hsien-Chung Wu
doaj   +1 more source

Remarks on Recent Fixed Point Theorems

open access: yesFixed Point Theory and Applications, 2010
Coincidence and fixed point theorems for a new class of contractive, nonexpansive and hybrid contractions are proved. Applications regarding the existence of common solutions of certain functional equations are also discussed.
Mishra SN, Singh SL
doaj   +2 more sources

Fixed Point Theorems for Multivalued Mappings Involving α-Function

open access: yesAbstract and Applied Analysis, 2014
We obtain some fixed point theorems with error estimates for multivalued mappings satisfying a new α-ψ-contractive type condition. Our theorems generalize many existing fixed point theorems, including some fixed point theorems proved for α-ψ-contractive ...
Muhammad Usman Ali   +2 more
doaj   +1 more source

Generalized 𝜶-𝝍 Contractive Type Mappings and Related Fixed Point Theorems with Applications

open access: yesAbstract and Applied Analysis, 2012
We establish fixed point theorems for a new class of contractive mappings. As consequences of our main results, we obtain fixed point theorems on metric spaces endowed with a partial order and fixed point theorems for cyclic contractive mappings. Various
Erdal Karapınar, Bessem Samet
doaj   +1 more source

Generalized fixed point theorems on metric spaces [PDF]

open access: yesMathematica Moravica, 2022
In this paper, we establish some fixed point theorems for single valued and multi-valued mappings on a complete metric space. Suzuki's and some other fixed point theorems are generalized by taking a more general contractive condition for single valued ...
Chandra Naveen   +2 more
doaj   +1 more source

Fixed point theorems for F-expanding mappings

open access: yesFixed Point Theory and Applications, 2017
Recently, Wardowski (Fixed Point Theory Appl. 2012:94, 2012) introduced a new concept of F-contraction and proved a fixed point theorem which generalizes the Banach contraction principle.
Jarosław Górnicki
doaj   +1 more source

Fixed Point Theorems via α-ϱ-Fuzzy Contraction

open access: yesAxioms, 2019
Some well known results from the existing literature are extended and generalized via new contractive type mappings in fuzzy metric spaces. A non trivial supporting example is also provided to demonstrate the validity of the obtained results.
Badshah-e- Rome   +2 more
doaj   +1 more source

Convergence Theorems for Hierarchical Fixed Point Problems and Variational Inequalities [PDF]

open access: yes, 2014
This paper deals with a modifed iterative projection method for approximating a solution of hierarchical fixed point problems for nearly nonexpansive mappings.
Karahan, Ibrahim, Ozdemir, Murat
core   +3 more sources

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