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Wyszukujesz frazę "fixed point" wg kryterium: Temat


Tytuł:
Singular quasilinear convective systems involving variable exponents
Autorzy:
Moussaoui, Abdelkrim
Nabab, Dany
Vélin, Jean
Powiązania:
https://bibliotekanauki.pl/articles/29519640.pdf
Data publikacji:
2024
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
p(x)-Laplacian
variable exponents
fixed point
singular system
gradient estimates
regularity
Opis:
The paper deals with the existence of solutions for quasilinear elliptic systems involving singular and convection terms with variable exponents. The approach combines the sub-supersolutions method and Schauder’s fixed point theorem.
Źródło:
Opuscula Mathematica; 2024, 44, 1; 105-134
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method of lower and upper solutions for control problems and application to a model of bone marrow transplantation
Autorzy:
Parajdi, Lorand Gabriel
Precup, Radu
Haplea, Ioan Ştefan
Powiązania:
https://bibliotekanauki.pl/articles/24200690.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
control problem
lower and upper solution
fixed point
approximation algorithm
numerical solution
medical application
sterowanie optymalne
punkt stały
algorytm aproksymacyjny
rozwiązanie numeryczne
zastosowanie medyczne
Opis:
A lower and upper solution method is introduced for control problems related to abstract operator equations. The method is illustrated on a control problem for the Lotka-Volterra model with seasonal harvesting and applied to a control problem of cell evolution after bone marrow transplantation.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2023, 33, 3; 409--418
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical solution of a fractional coupled system with the Caputo-Fabrizio fractional derivative
Autorzy:
Mansouri, Ikram
Bekkouche, Mohammed Moumen
Ahmed, Abdelaziz Azeb
Powiązania:
https://bibliotekanauki.pl/articles/2202061.pdf
Data publikacji:
2023
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
Caputo-Fabrizio fractional derivative
fractional integral
coupled system
fractional differential equation
fixed point
Adomian decomposition method
pochodna ułamkowa Caputo-Fabrizio
całkowanie ułamkowe
system sprzężony
ułamkowe równanie różniczkowe
punkt stały
metoda dekompozycji Adomiana
Opis:
Within this work, we discuss the existence of solutions for a coupled system of linear fractional differential equations involving Caputo-Fabrizio fractional orders. We prove the existence and uniqueness of the solution by using the Picard-Lindel ̈of method and fixed point theory. Also, to compute an approximate solution of problem, we utilize the Adomian decomposition method (ADM), as this method provides the solution in the form of a series such that the infinite series converge to the exact solution. Numerical examples are presented to illustrate the validity and effectiveness of the proposed method.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2023, 22, 1; 46--56
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the constrained and unconstrained controllability of semilinear Hilfer fractional systems
Autorzy:
Sikora, Beata
Powiązania:
https://bibliotekanauki.pl/articles/27312002.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Hilfer fractional derivative
fractional systems
semilinear control systems
nonautonomous systems
Rothe's fixed point theorem
generalized Darbo fixed point theorem
Opis:
In the paper finite-dimensional semilinear dynamical control systems described by fractional-order state equations with the Hilfer fractional derivative are discussed. The formula for a solution of the considered systems is presented and derived using the Laplace transform. Bounded nonlinear function f depending on a state and controls is used. New sufficient conditions for controllability without constraints are formulated and proved using Rothe’s fixed point theorem and the generalized Darbo fixed point theorem. Moreover, the stability property is used to formulate constrained controllability criteria. An illustrative example is presented to give the reader an idea of the theoretical results obtained. A transient process in an electrical circuit described by a system of Hilfer type fractional differential equations is proposed as a possible application of the study.
Źródło:
Archives of Control Sciences; 2023, 33, 1; 155--178
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radial solutions for nonlinear elliptic equation with nonlinear nonlocal boundary conditions
Autorzy:
Kossowski, Igor
Powiązania:
https://bibliotekanauki.pl/articles/29519502.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
nonlocal boundary value problem
radial solution
elliptic equation
Krasnoselskii's fixed point theorem in cone
Opis:
In this article, we prove existence of radial solutions for a nonlinear elliptic equation with nonlinear nonlocal boundary conditions. Our method is based on some fixed point theorem in a cone.
Źródło:
Opuscula Mathematica; 2023, 43, 5; 675-687
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controllability of time varying semilinear non-instantaneous impulsive systems with delay, and nonlocal conditions
Autorzy:
Cabada, Dalia
Garcia, Katherine
Guevara, Cristi
Leiva, Hugo
Powiązania:
https://bibliotekanauki.pl/articles/2134894.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
exact controllability
semilinear time varying control systems
non-instantaneous impulses
delay
nonlocal conditions
Rothe's fixed point theorem
Opis:
In this paper we prove the exact controllability of a time varying semilinear system considering non-instantaneous impulses, delay, and nonlocal conditions occurring simultaneously. It is done by using the Rothe’s fixed point theorem together with some sub-linear conditions on the nonlinear term, the impulsive functions, and the function describing the nonlocal conditions. Furthermore, a control steering the semilinear system from an initial state to a final state is exhibited.
Źródło:
Archives of Control Sciences; 2022, 32, 2; 335--357
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence of positive continuous weak solutions for some semilinear elliptic eigenvalue problems
Autorzy:
Zeddini, Noureddine
Sari, Rehab Saeed
Powiązania:
https://bibliotekanauki.pl/articles/2216186.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Green function
Kato class
nonlinear elliptic systems
positive solution
maximum principle
Schauder fixed point theorem
Opis:
Let D be a bounded $C^(1,1)$ -domain in $R^d$, d ≥ 2. The aim of this article is twofold. The first goal is to give a new characterization of the Kato class of functions $K(D)$ that was defined by $N$. Zeddini for $d = 2$ and by $H$. Mâagli and M. Zribi for $d ≥ 3$ and adapted to study some nonlinear elliptic problems in $D$. The second goal is to prove the existence of positive continuous weak solutions, having the global behavior of the associated homogeneous problem, for sufficiently small values of the nonnegative constants $λ$ and $μ$ to the following system $Δu = λf(x, u, v)$, $Δv = μg(x, u, v)$ in D, $u = ϕ_1$ and $v = ϕ_2$ on $∂D$, where $ϕ_1$ and $ϕ_2$ are nontrivial nonnegative continuous functions on $∂D$. The functions $f$ and g are nonnegative and belong to a class of functions containing in particular all functions of the type $f(x, u, v) = p(x)u^(α) h_1 (v)$ and $g(x, u, v) = q(x)h_2 (u)v^β$ with $α ≥ 1$, $β ≥ 1$, $h_1$, $h_2$ are continuous on $[0,∞)$ and $p$, $q$ are nonnegative functions in $K(D)$.
Źródło:
Opuscula Mathematica; 2022, 42, 3; 489-519
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonnegative solutions for a class of semipositone nonlinear elliptic equations in bounded domains of $ \mathbb{R}^n $
Autorzy:
Bachar, Imed
Mâagli, Habib
Eltayeb, Hassan
Powiązania:
https://bibliotekanauki.pl/articles/29519177.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
nonnegative solution
semipositone
Kato class
fixed point theorem
Opis:
In this paper, we obtain sufficient conditions for the existence of a unique nonnegative continuous solution of semipositone semilinear elliptic problem in bounded domains of $ \mathbb{R}^n $ (n ≥ 2). The global behavior of this solution is also given.
Źródło:
Opuscula Mathematica; 2022, 42, 6; 793-803
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical and theoretical analysis of an awareness COVID-19 epidemic model via generalized Atangana-Baleanu fractional derivative
Autorzy:
Baba, Isa Abdullahi
Ahmed, Idris
Al-Mdallal, Qasem M
Jarad, Fahd
Yunusa, Salisu
Powiązania:
https://bibliotekanauki.pl/articles/2175507.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
existence
uniqueness
generalized ABC fractional derivative
fixed point theorems
numerical simulations
istnienie
wyjątkowość
uogólniona pochodna ułamkowa ABC
twierdzenia o punktach stałych
symulacje numeryczne
Opis:
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.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2022, 21, 1; 7--18
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear parabolic equation having nonstandard growth condition with respect to the gradient and variable exponent
Autorzy:
Charkaoui, Abderrahim
Fahim, Houda
Alaa, Nour Eddine
Powiązania:
https://bibliotekanauki.pl/articles/1397333.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
variable exponent
quasilinear equation
Schaeffer’s fixed point
weak solution
subsolution
supersolution
Opis:
We are concerned with the existence of solutions to a class of quasilinear parabolic equations having critical growth nonlinearity with respect to the gradient and variable exponent. Using Schaeffer’s fixed point theorem combined with the sub- and supersolution method, we prove the existence results of a weak solutions to the considered problems.
Źródło:
Opuscula Mathematica; 2021, 41, 1; 25-53
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System of boundary random fractional differential equations via Hadamard derivative
Autorzy:
Malki, Zakaria
Berhoun, Farida
Ouahab, Abdelghani
Powiązania:
https://bibliotekanauki.pl/articles/1797181.pdf
Data publikacji:
2021-04-14
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
Random fractional differential equation
Hadamard fractional differential equation
existence
fixed point
vector metric space
Opis:
We study the existence of solutions for random system of fractional differential equations with boundary nonlocal initial conditions. Our approach is based on random fixed point principles of Schaefer and Perov, combined with a vector approach that uses matrices that converge to zero. We prove existence and uniqueness results for these systems. Some examples are presented to illustrate the theory.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica; 2021, 20; 17-41
2300-133X
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Banach contraction principle to approximate the golden number
Autorzy:
Barcz, Eugeniusz
Powiązania:
https://bibliotekanauki.pl/articles/1789259.pdf
Data publikacji:
2020-12-29
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
golden number
Banach Contraction Principle
fixed point
Opis:
This work is devoted to the application of selected fixed point theorems in the problems of convergence of certain sequences to the golden number. It contains the theorem about the fixed point of so-called ψ-contraction specified on the closed interval and the local version of Banach Contraction Principle as a conclusion. It will also be used to approximate the golden number.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia; 2020, 12; 31-38
2080-9751
2450-341X
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and Ulam-Hyers stability of the implicit fractional boundary value problem with ψ-Caputo fractional derivative
Autorzy:
Wahash, Hanan A.
Abdo, Mohammed S
Panchal, Satish K.
Powiązania:
https://bibliotekanauki.pl/articles/1839794.pdf
Data publikacji:
2020
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
fractional differential equations
ψ-fractional integral and derivative
existence and Ulam-Hyers stability
fixed point theorem
równania różniczkowe ułamkowe
równania różniczkowe cząstkowe
pochodna ułamkowa
twierdzenie o punkcie stałym
pochodna ułamkowa Caputo
Opis:
In this paper, we investigate the existence, uniqueness and Ulam-Hyers stability of solutions for nonlinear implicit fractional differential equations with boundary conditions involving a ψ-Caputo fractional derivative. The obtained results for the proposed problem are proved under a new approach and minimal assumptions on the function ƒ. The analysis is based upon the reduction of the problem considered to the equivalent integral equation, while some fixed point theorems of Banach and Schauder and generalized Gronwall inequality are employed to obtain our results for the problem at hand. Finally, the investigation is illustrated by providing a suitable example.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 1; 89-101
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and Ulam-Hyers stability of the implicit fractional boundary value problem with ψ-Caputo fractional derivative
Autorzy:
Wahash, Hanan A.
Abdo, Mohammed S
Panchal, Satish K.
Powiązania:
https://bibliotekanauki.pl/articles/122800.pdf
Data publikacji:
2020
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
fractional differential equations
ψ-fractional integral and derivative
existence and Ulam-Hyers stability
fixed point theorem
równania różniczkowe ułamkowe
równania różniczkowe cząstkowe
pochodna ułamkowa
twierdzenie o punkcie stałym
pochodna ułamkowa Caputo
Opis:
In this paper, we investigate the existence, uniqueness and Ulam-Hyers stability of solutions for nonlinear implicit fractional differential equations with boundary conditions involving a ψ-Caputo fractional derivative. The obtained results for the proposed problem are proved under a new approach and minimal assumptions on the function ƒ . The analysis is based upon the reduction of the problem considered to the equivalent integral equation, while some fixed point theorems of Banach and Schauder and generalized Gronwall inequality are employed to obtain our results for the problem at hand. Finally, the investigation is illustrated by providing a suitable example.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 1; 89-101
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and Uniqueness of Time Periodic Solution to the Viscous Modified Degasperis-Procesi Equation
Autorzy:
Asaduzzaman, Md.
Ali, Md. Zulfikar
Powiązania:
https://bibliotekanauki.pl/articles/1031446.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Galerkin’s method
Leray-Schauder fixed point theorem
time periodic solution
viscous modified Degasperis-Procesi equation
Opis:
In this paper, we establish the existence and uniqueness criteria of time periodic solution to the viscous modified Degasperis-Procesi (vmDP for short) equation with periodic boundary value conditions. The analysis of this study is based on Galerkin’s method and Leray-Schauder fixed point theorem. Using Galerkin’s method some uniform priori estimates of approximate solution to the corresponding equation of vmDP has been constructed. Furthermore, the efficient and straightforward existence and uniqueness criteria of time periodic solution to the vmDP with periodic boundary value conditions has been obtained.
Źródło:
World Scientific News; 2020, 142; 25-43
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł

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