Results 21 to 30 of about 1,170,010 (258)

Bounded Fixed Point Iteration

open access: yesDAIMI Report Series, 1991
In the context of abstract interpretation for languages without higher-order features we study the number of times a functional need to be unfolded in order to give the least fixed point. For the cases of total or monotone functions we obtain an exponential bound and in the case of strict and additive (or distributive) functions we obtain a quadratic ...
Nielson, Hanne Riis, Nielson, Flemming
openaire   +4 more sources

Fixed Points for w-Contractive Multimaps

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
Using the generalized Caristi's fixed point theorems we prove the existence of fixed points for self and nonself multivalued weakly w-contractive maps.
Abdul Latif, Marwan A. Kutbi
doaj   +1 more source

Existence and Data Dependence of Fixed Points and Strict Fixed Points for Contractive-Type Multivalued Operators

open access: yesFixed Point Theory and Applications, 2007
The purpose of this paper is to present several existence and data dependence results of the fixed points of some multivalued generalized contractions in complete metric spaces. As for application, a continuation result is given.
Cristian Chifu, Gabriela Petruşel
doaj   +2 more sources

Existence of almost fixed points for random operators with application in game theory

open access: yesResults in Nonlinear Analysis, 2020
We introduce the notion of the random ε-fixed point for random operators. Then we prove some existence theorems in order to apply this results in game theory for example we will prove existence of ε-random Nash equilibrium in some class of random games ...
Oskar Górniewicz
doaj  

Related G-metrics and Fixed Points

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
For a single valued mapping T in a G-complete G-metric space (X, d), we show that if Tn,for some n> 1, is a contraction, then T itself is a contraction under another related G-metric d′. We establish moreover that if T is uniformly continuous, then d′ is
Gaba Yaé Ulrich O.
doaj   +1 more source

On a Common Jungck Type Fixed Point Result in Extended Rectangular b-Metric Spaces

open access: yesAxioms, 2019
In this paper, we present a Jungck type common fixed point result in extended rectangular b-metric spaces. We also give some examples and a known common fixed point theorem in extended b-metric spaces.
Hassen Aydi   +3 more
doaj   +1 more source

Unheard and Under‐Supported: Health‐Related Quality of Life in Children, Adolescents, and Young Adults With Sickle Cell Disease

open access: yesPediatric Blood &Cancer, EarlyView.
Abstract Background Sickle cell disease (SCD) is an autosomal recessive hemoglobinopathy affecting millions of individuals worldwide. The clinical expression and psychosocial burden of SCD vary widely across geographical, cultural, and healthcare system contexts, underscoring the need for setting‐specific approaches to assessment.
Desiré Fantasia   +7 more
wiley   +1 more source

On characterizations of fixed points

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We give some necessary and sufficient conditions for the existence of fixed points of a family of self mappings of a metric space and we establish an equivalent condition for the existence of fixed points of a continuous compact mapping of a metric space.
Zeqing Liu, Lili Zhang, Shin Min Kang
doaj   +1 more source

FIXED POINTS AND APPROXIMATE FIXED POINTS IN PRODUCT SPACES

open access: yesTaiwanese Journal of Mathematics, 2001
The paper deals with the general theme of what is known about the existence of fixed points and approximate fixed points for mappings which satisfy geometric conditions in product spaces. In particular it is shown that if X and Y are metric spaces each of which has the fixed point property for nonexpansive mappings, then the product space (X ×Y )∞ has ...
Espínola, R., Kirk, W. A.
openaire   +5 more sources

Imaging of High‐Risk Neuroblastoma: Recommendations From SIOPEN Radiology and Nuclear Medicine Specialty Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Neuroblastoma is the most common extracranial solid tumor in early childhood. Its clinical behavior is highly variable, ranging from spontaneous regression to fatal outcome despite intensive treatment. The International Society of Pediatric Oncology Europe Neuroblastoma Group (SIOPEN) Radiology and Nuclear Medicine Specialty Committees ...
Annemieke Littooij   +11 more
wiley   +1 more source

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