Results 31 to 40 of about 1,022,933 (334)

Relation Theoretic Common Fixed Point Results for Generalized Weak Nonlinear Contractions with an Application

Axioms, 2019
In this paper, by introducing the concept of generalized Ćirić-type weak ( ϕ g , R ) -contraction, we prove some common fixed point results in partial metric spaces endowed with binary relation R .
Atiya Perveen, Idrees A. Khan, Mohammad Imdad   +2 more
doaj   +1 more source

Coupled fixed point sets with data-dependence and stability [PDF]

Surveys in Mathematics and its Applications, 2022
In this paper we establish a coupled fixed point theorem of a coupled multivalued mapping defined on a complete metric space. In our result we use a new contractive inequality. There are rational terms in the expression of the inequality. The contractive
Binayak S. Choudhury, Nikhilesh Metiya, Sunirmal Kundu   +2 more
doaj  

On the properties of contact binary stars

, 2004
A catalogue of light curve solutions of contact binary stars has been compiled. It contains the results of 159 light curve solutions. Properties of contact binary stars were studied by using the catalogue data. As it is well known since Lucy's (1968a,b)
Binnendijk, Bradstreet, Flower, Kalimeris, Kuiper, Kähler, Kähler, Kähler, Kähler, Kähler, Liu, Lucy, Lucy, Lucy, Maceroni, Maceroni, Mochnacki, P. Klagyivik, Pribulla, Rucinski, Sz. Csizmadia, Vinkó, Webbink   +22 more
core   +1 more source

Binary relations in the space of binary relations. I.

Applied Mathematical Sciences, 2014
This article formulates principles of extension, saturation and convergence, and shows how to implement them. In socio-economic systems, there are "reference groups", with the indicators of which the results of the research and experimentation are compared.
openaire   +1 more source

THE RESEARCH OF THE POLLUTION OF SPRINGS IN THE CITY OF STAVROPOL BY THE METHOD OF FACTOR ANALYSIS

Наука. Инновации. Технологии, 2022
The researches of pollution of six springs in Stavropol were made according to thirteen kinds of contamination by factor analysis. Analysis of samples was carried out on the basis of Scientific-Educational Laboratory «Ecoanalytical Laboratory of ...
Inna Vladimirovna Begday, Elena Vasilievna Bondar, Natalya Evgenyevna Perekopskaya   +2 more
doaj  

Relation-theoretic fixed point theorems under a new implicit function with applications to ordinary differential equations

AIMS Mathematics, 2020
In this paper, we introduce a new implicit function without any continuity requirement and utilize the same to prove unified relation-theoretic fixed point results. We adopt some examples to exhibit the utility of our implicit function.
Waleed M. Alfaqih, Abdullah Aldurayhim, Mohammad Imdad, Atiya Perveen   +3 more
doaj   +1 more source

Relation-Theoretic Contraction Principle In Metric Spaces Using Multiplicative Contraction

Ratio Mathematica, 2023
Alam and Imdad have presented a novel application of the Banach contraction principle on a complete metric spaces with a binary relation. We have extended the concept of binary relation with the multiplicative contraction in a complete metric spaces.
Radha Yadav, Balbir Singh
doaj   +1 more source

Multivalued Mizoguchi-Takahashi type rational contraction in relational metric spaces [PDF]

Surveys in Mathematics and its Applications, 2023
In this paper we establish a result in the fixed point theory of multivalued mappings. This is done by combining three prevalent trends in fixed point theory. Some consequences of the main theorem are discussed.
Binayak S. Choudhury, Nikhilesh Metiya, Priyam Chakraborty, Sunirmal Kundu   +3 more
doaj  

The ACS Survey of Galactic Globular Clusters. XII. Photometric Binaries along the Main-Sequence [PDF]

, 2011
The fraction of binary stars is an important ingredient to interpret globular cluster dynamical evolution and their stellar population. We investigate the properties of main-sequence binaries measured in a uniform photometric sample of 59 Galactic ...
A. Aparicio, A. Dotter, A. F. Marino, A. Marín-Franch, A. Moretti, A. P. Milone, A. Rosenberg, A. Sarajedini, Albrow, Alcaino, Anderson, Anderson, Anderson, Anderson, Anderson, Anderson, Aparicio, Aparicio, B. Chaboyer, Bedin, Bedin, Bellazzini, Bellini, Bellini, Bolte, Carretta, Catelan, Clark, Cote, Cote, Davies, Davis, De Angeli, de Marchi, de Marchi, Dotter, Dotter, Draine, Duchêne, Duquennoy, Elson, Fischer, Fisher, Fregeau, Fregeau, G. Piotto, Gebhardt, Giersz, Girardi, Gunn, Halbwachs, Harris, Hills, Hurley, Hurley, Hurley, Hut, I. N. Reid, Ivanova, J. Anderson, Knigge, Kroupa, Kroupa, Kroupa, L. R. Bedin, Leigh, M. B. Davies, M. Hempel, M. Siegel, Mackey, Marino, Marino, Marks, Marín-Franch, Mayor, McCaughrean, McLaughlin, Meylan, Milone, Milone, Milone, Milone, Milone, Milone, Moni Bidin, Moni Bidin, Moretti, N. E. Q. Paust, Napiwotzki, Petr, Piotto, Piotto, Piotto, Piotto, Pooley, Prosser, Pryor, Raghavan, Rastegaev, Recio-Blanco, Richer, Romani, Rubenstein, S. Majewski, Salaris, Sarajedini, Sbordone, Shara, Siegel, Sollima, Sollima, Sollima, Tout, Trager, Trenti, von Braun, Yan, Zhao, Zinn   +118 more
core   +2 more sources

Binary relations and reduced hypergroups

Discrete Mathematics, 2008
Let \(H\) be a nonempty set, \(\mathcal P(H)^*\) the family of nonempty subsets of \(H\) and \(\cdot\) a hyperoperation in \(H\), that is, \(\cdot\colon H\times H\to\mathcal P(H)^*\). J. Jantosciak defined three fundamental equivalence relations on any hypergroupoid \((H,\cdot)\) as follows: Let \(x,y\in H\), then (i) \(x\) and \(y\) are said to be ...
Cristea, Irina, Ştefănescu, Mirela
openaire   +1 more source