Results 31 to 40 of about 2,884,547 (321)

Weak Contractions, Common Fixed Points, and Invariant Approximations

open access: yesJournal of Inequalities and Applications, 2009
The existence of common fixed points is established for the mappings, where is -weak contraction on a nonempty subset of a Banach space. As application, some results on the invariant best approximation are proved.
Cho YeolJe, Hussain Nawab
doaj   +2 more sources

Common fixed points and convergence results for α-Krasnosel'skii mappings

open access: yesAIMS Mathematics, 2023
We present convergence and common fixed point conclusions of the Krasnosel'skii iteration which is one of the iterative methods associated with α-Krasnosel'skii mappings satisfying condition (E).
Amit Gangwar   +2 more
doaj   +1 more source

General Common Fixed Point Theorems and Applications [PDF]

open access: yesJournal of Applied Mathematics, 2012
The main result is a common fixed point theorem for a pair of multivalued maps on a complete metric space extending a recent result of Đorić and Lazović (2011) for a multivalued map on a metric space satisfying Ćirić‐Suzuki‐type‐generalized contraction.
Singh, Shyam Lal   +3 more
openaire   +4 more sources

Compatible mappings and common fixed points (2)

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
A common fixed point theorem of S.L. and S.P. Singh is generalized by weakening commutativity hypotheses and by increasing the number of functions involved.
Gerald Jungck
doaj   +1 more source

Common Fixed Points for Suzuki-Generalized Nonexpansive Maps

open access: yesJournal of Applied Mathematics, 2013
A common fixed point theorem for a pair of maps satisfying condition (C) is proved under certain conditions. We extend the well-knownDeMarr's fixed point theorem to the case of noncommuting family of maps satisfying condition (C).
Maryam A. Alghamdi   +2 more
doaj   +1 more source

On Multistep Iterative Scheme for Approximating the Common Fixed Points of Contractive-Like Operators [PDF]

open access: yes, 2010
We introduce the Jungck-multistep iteration and show that it converges strongly to the unique common fixed point of a pair of weakly compatible generalized contractive-like operators defined on a Banach space.
Akewe, H, Olaleru, J.O.
core   +2 more sources

Common fixed points for family of mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
The main aim of the present paper is to prove the existence of common fixed points for mappings which are not necessarily continuous. Our results, which are primarly motivated by investigation of Husain and Sehgal (Bull. Austral. Math. Soc.
D. E. Anderson   +2 more
doaj   +1 more source

A note on strong convergence to common fixed points of nonexpansive mappings in Hilbert spaces [PDF]

open access: yes, 2009
The aim of this paper is to investigate the links between ${\cal T}_C$-class algorithms, CQ Algorithm and shrinking projection methods. We show that strong convergence of these algorithms are related to coherent ${\cal T}_C$-class sequences of mapping ...
Chancelier, Jean-Philippe
core   +3 more sources

Common fixed points for semigroups of mappings [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
Let X be a compact convex subset of a strictly convex Banach space. Let S be a Hausdorff topological semigroup which is either left amenable or left reversible. Then for any generalised nonexpansive (jointly) continuous action of S on X, X contains a common fixed point of S.
Lau, Anthony To-Ming, Wong, Chi Song
openaire   +1 more source

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis   +9 more
wiley   +1 more source

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