PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 16

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  fixed point theorems
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Numerical and theoretical analysis of an awareness COVID-19 epidemic model via generalized Atangana-Baleanu fractional derivative
Baba Isa Abdullahi, Ahmed Idris, Al-Mdallal Qasem M, Jarad Fahd, Yunusa Salisu
Journal of Applied Mathematics and Computational Mechanics
|
2022
|
Vol. 21, nr 1
7--18
EN
In this paper, a COVID-19 Awareness model in the setting of a generalized fractional Atangana-Baleanu derivative is proposed. The existence and uniqueness of a solution of the proposed fractional-order model are investigated under the techniques of fixed point theorems. In addition, we perform the predictor-corrector method to find its numeric solutions and present the graphs of the various solutions using different values of the parameters embodied in the derivative.
2
Content available remote On some fixed point theorems for multivalued F-contractions in partial metric spaces
Kumar Santosh, Luambano Sholastica
Demonstratio Mathematica
|
2021
|
Vol. 54, nr 1
151--161
EN
Altun et al. explored the existence of fixed points for multivalued F-contractions and proved some fixed point theorems in complete metric spaces. This paper extended the results of Altun et al. in partial metric spaces and proved fixed point theorems for multivalued F-contraction mappings. Some illustrative examples are provided to support our results. Moreover, an application for the existence of a solution of an integral equation is also enunciated, showing the materiality of the obtained results.
3
Content available Existence and uniqueness of solutions for nonlinear Katugampola fractional differential equations
Basti Bilal, Arioua Yacine, Benhamidouche Nouredine
Journal of Mathematics and Applications
|
2019
|
Vol. 42
35--61
EN
The present paper deals with the existence and uniqueness of solutions for a boundary value problem of nonlinear fractional differential equations with Katugampola fractional derivative. The main results are proved by means of Guo-Krasnoselskii and Banach fixed point theorems. For applications purposes, some examples are provided to demonstrate the usefulness of our main results.
4
Content available remote Solvability of a Coupled System of Fractional Differential Equations with Nonlocal and Integral Boundary Conditions
Ahmad B., Ntouyas S. K., Alsaedi A., Hobiny A.
Fundamenta Informaticae
|
2017
|
Vol. 151, nr 1/4
91--108
EN
This paper is concerned with the existence and uniqueness of solutions for a coupled system of fractional differential equations with nonlocal and integral boundary conditions. The existence and uniqueness of solutions is established by Banach’s contraction principle, while the existence of solutions is derived by using Leray-Schauder’s alternative. The results are explained with the aid of examples. The case of nonlocal strip conditions is also discussed.
5
Content available remote Common fixed points of conditionally commuting mappings satisfying weaker continuity conditions
Bisht R K
Fasciculi Mathematici
|
2012
|
Nr 49
33--41
EN
The aim of the present paper is to obtain some new common fixed point theorems for a pair of Lipschitzian type selfmappings satisfying a minimal commutativity and weaker continuity conditions. In the setting of our results we establish a situation in which a pair of mappings may possess common fixed points as well as coincidence points which may not be common fixed points. Our results generalize several fixed point theorems.
6
Content available remote General fixed point theorems for weakly compatible maps
Djoudi A.
Demonstratio Mathematica
|
2005
|
Vol. 38, nr 1
197--205
EN
The purpose of this note is to use general expanssive conditions and minimal type commutativity without continuity requirements to prove some fixed point theorems. The theorems extend known results from the class of compatible continuous expansive maps to a wider class of mappings.
7
Content available remote Fixed point theorem for sequences of maps
Türkoğlu D., Altun I., Fisher B.
Demonstratio Mathematica
|
2005
|
Vol. 38, nr 2
461--468
EN
In this paper, we prove a common fixed point theorem for sequences of maps under the condition of compatible mappings on complete metric space. We extend and generalize several fixed point theorems on complete metric space.
8
Content available remote Common fixed point theorems for three expansive self-maps in D-metric spaces
Singh B., Jain S.
Demonstratio Mathematica
|
2005
|
Vol. 38, nr 3
703--713
EN
B. Singh and R. K. Sharma [Demonstratio Math. Vol. 36, No.l (2003), 215-220] have proved two common fixed point theorems for two self-maps satisfying an expansive condition in D- metric spaces. This note offers generalization for these theorems for three self-maps using weak- compatibility and reduces the domain of z to an orbit only. The last theorem proves that the continuity of none of two or three maps is required in the setting of D- metric space.
9
Content available remote Fixed point theorems for weakly commuting and compatible multi-valued mappings
Miczko A., Palczewski B.
Demonstratio Mathematica
|
2004
|
Vol. 37, nr 4
803--821
EN
In this paper some common fixed point theorems for single- and multivalued contractive mappings with weak commutativity and compatibility conditions are given. Assumed that single-valued T and S are self-mappings on a generalized (in the sense of Jung [8]) metric space (X,d). Multi-valued mappings F,G : -Cl(X) have values in a space (Cl(X),H) of all nonempty and closed subsets of X, where H is a generalized Hausdorff metric in Cl(X).
10
Content available remote Some Gregus type common fixed point theorems with applications
Pathak H. K., Mishra S. N., Kalinde A. K.
Demonstratio Mathematica
|
2003
|
Vol. 36, nr 2
413--426
EN
In this paper a Gregus type common fixed point theorem for coincidently commuting mappings is proved and utilized to obtain the iterative solution of certain variational inequalities.
11
Content available remote On the convergence of the Ishikawa iterates to a common fixed point of multivalued mappings
Ćirić L., Ume J. S.
Demonstratio Mathematica
|
2003
|
Vol. 36, nr 4
951--956
EN
Let C be a nonempty convex and closed subset of a normed linear space X and CB{C) be a family of all nonempty closed and bounded, not necessarily compact subsets of C. In this paper the convergence of the Ishikawa iterates to a common fixed point of a pair of multivalued mappings S, T : C - CB(C) which satisfy a very general condition (3) below, is considered.
12
Content available remote Meir-Keeler type fixed point theorems and dynamics of functions
Pant R. P.
Demonstratio Mathematica
|
2003
|
Vol. 36, nr 1
199--206
EN
In the present paper we obtain a common fixed point theorem under a new contractive condition which is independent of the known contractive definitions. In the second fixed point theorem we study the dynamics of a class of functions induced by real numbers and then apply the result to obtain general tests for divisibility of numbers.
13
Content available remote Some fixed and common fixed point theorems connected to a results of M.S. Khan, M. Swald and S. Sessa
Akkouchi M.
Demonstratio Mathematica
|
2002
|
Vol. 35, nr 1
129-138
EN
The aim of this note is to prove some fixed and common fixed point theorems in complete metric spaces for self-maps verifying generalized contractive conditions close to that one introduced by M. S. Khan, M. Swaleh and S. Sessa in [6]. Moreover our results utilize much weaker conditions on the functions altering the distances between the points. Our main result unifies and improves the main results of papers [I], [4], [6] and [8].
14
Content available remote Remarks on recent fixed pont theorems and applications to integral equations
Mishra S., Singh S.
Demonstratio Mathematica
|
2001
|
Vol. 34, nr 4
847-857
EN
Coincidence and fixed point theorems for a quadruple of maps on an arbitrary set with values in a metric space and with minimal commutavity conditions have been studied. Applications to nonlinear integral equations are also given.
15
Content available remote Some fixed point theorems for set-valued mappings in uniform spaces
Turkoglu D., Ozer O., Fisher B.
Demonstratio Mathematica
|
1999
|
Vol. 32, nr 2
394-400
16
Content available remote Some fixed point theorems for compatible mappings satisfying an implicit relation
Popa V.
Demonstratio Mathematica
|
1999
|
Vol. 32, nr 1
157-163
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.