Güncel Gönderiler: Fen - Edebiyat Fakültesi

Toplam kayıt 3263, listelenen: 981-1000

Pata type contractions involving rational expressions with an application to integral equations

Karapınar, Erdal; Atangana, Abdon; Fulga, Andreea (2021-10)

In this paper, we introduce the notion of rational Pata type contraction in the complete metric space. After discussing the existence and uniqueness of a fixed point for such contraction, we consider a solution for integral ...
Oscillation criteria for second order impulsive delay differential equation

Alzabut, J.; Zafert, A.; Taş, Kenan; Baleanu, Dumitru; Krupka, D.; Kurpkova, O. (2004)

A necessary and sufficient condition is obtained for oscillation of bounded solutions of second order impulsive delay differential equations of the form (r(t)x(t))'+p(t)f(x(i(t)))=0, t not equal theta Delta(r(theta ...
Ordered generalized φ−contraction in ordered fuzzy metric spaces with an application in dynamic programming

Jain, Manish; Tomar, Anita; Joshi, Meena; Taş, Kenan (2021)

The common fixed point for ordered generalized φ−contraction in the environment of an ordered fuzzy metric space is determined under min-imum possible conditions. A result in ordered metric space is also obtained. The work ...
Optimality of solution with numerical investigation for coronavirus epidemic model

Shahid, Naveeda; Baleanu, Dumitru; Ahmed, Nauman; Shaikh, Tahira Sumbal; Raza, Ali; Iqbal, Muhammad Sajid; Rafiq, Muhammad; Aziz-Ur Rehman, Muhammad (2021)

The novel coronavirus disease, coined as COVID-19, is a murderous and infectious disease initiated from Wuhan, China. This killer disease has taken a large number of lives around the world and its dynamics could not be ...
Optimal solutions for singular linear systems of Caputo fractional differential equations

Dassios, Ioannis; Baleanu, Dumitru (2021-07-15)
Optimal Control of a MIMO Bioreactor System Using Direct Approach

Simorgh, Abolfazl; Razminia, Abolhassan; Mobayen, Saleh; Baleanu, Dumitru (2021-03)

In this paper, the optimal control of a continuous type bioreactor with multi-input-multi-output signals is presented for the two active phases: growth and stationary. The underlying criterion to be minimized generalizes ...
Optimal control model for the transmission of novel COVID-19

Baba, Isa Abdullahi; Nasidi, Bashir Ahmad; Baleanu, Dumitru (2021)

As the corona virus (COVID-19) pandemic ravages socio-economic activities in addition to devastating infectious and fatal consequences, optimal control strategy is an effective measure that neutralizes the scourge to its ...
Optimal control for variable order fractional HIV/AIDS and malaria mathematical models with multi-time delay

Sweilam, N.H.; AL-Mekhlafi, S.M.; Mohammed, Z.N.; Baleanu, Dumitru (2020-10)

In this article, optimal control for variable order fractional multi-delay mathematical model for the co-infection of HIV/AIDS and malaria is presented. This model consists of twelve differential equations, where the ...
Optical solitons to the (n+1)-dimensional nonlinear Schrodinger's equation with Kerr law and power law nonlinearities using two integration schemes

İnç, Mustafa; Aliyu, Aliyu Isa; Yusuf, Abdullahi; Bayram, Mustafa; Baleanu, Dumitru (2019-07-10)

In this study, two integration techniques are employed to reach optical solitons to the (n + 1)-dimensional nonlinear Schrodinger's equation ((n + 1)-NLSE) with Kerr and power laws nonlinearities. These are the undetermined ...
Optical solitons and modulation instability analysis with (3+1)-dimensional nonlinear Shrodinger equation

İnç, Mustafa; Aliyu, Aliyu Isa; Yusuf, Abdullahi; Baleanu, Dumitru (2017-12)

This paper addresses the (3 + 1)-dimensional nonlinear Shrodinger equation (NLSE) that serves as the model to study the propagation of optical solitons through nonlinear optical fibers. Two integration schemes are employed ...
Optical solitons and modulation instability analysis of an integrable model of (2+1)-Dimensional Heisenberg ferromagnetic spin chain equation

İnç, Mustafa; Aliyu, Aliyu Isa; Yusuf, Abdullahi; Baleanu, Dumitru (2017-12)

This paper addresses the nonlinear Schrbdinger type equation (NLSE) in (2+1)-dimensions which describes the nonlinear spin dynamics of Heisenberg ferromagnetic spin chains (HFSC) with anisotropic and bilinear interactions ...
Optical solitary waves and conservation laws to the (2+1)-dimensional hyperbolic nonlinear Schrodinger equation

Aliyu, Aliyu Isa; İnç, Mustafa; Yusuf, Abdullahi; Baleanu, Dumitru (2018-10-30)

This work studies the hyperbolic nonlinear Schrodinger equation (H-NLSE) in (2 + 1)-dimensions. The model describes the evolution of the elevation of water wave surface for slowly modulated wave trains in deep water in ...
On wong type contractions

Karapınar, Erdal; Fulga, Andreea (2020-04-01)

In this paper, by using admissible mapping, Wong type contraction mappings are extended and investigated in the framework of quasi-metric spaces to guarantee the existence of fixed points. We consider examples to illustrate ...
On well-posedness of the sub-diffusion equation with conformable derivative model

Tuan, Nguyen Huy; Ngoc, Tran Bao; Baleanu, Dumitru; O'Regan, Donal (2020-10)

In this paper, we study an initial value problem for the time diffusion equation [Formula presented] on Ω × (0, T), where the time derivative is the conformable derivative. We study the existence and regularity of mild ...
ON TIME FRACTIONAL PSEUDO-PARABOLIC EQUATIONS WITH NONLOCAL INTEGRAL CONDITIONS

Tuan, Nguyen Anh; O’regan, Donal; Baleanu, Dumitru; Tuan, Nguyen H. (2022-02)

In this paper, we study the nonlocal problem for pseudo-parabolic equation with time and space fractional derivatives. The time derivative is of Caputo type and of order σ, 0 < σ < 1 and the space fractional derivative is ...
On the weighted fractional Pólya–Szegö and Chebyshev-types integral inequalities concerning another function

Nisar, Kottakkaran Sooppy; Rahman, Gauhar; Baleanu, Dumitru; Samraiz, Muhammad; Iqbal, Sajid (2020-12-01)

The primary objective of this present paper is to establish certain new weighted fractional Pólya–Szegö and Chebyshev type integral inequalities by employing the generalized weighted fractional integral involving another ...
On the weighted fractional integral inequalities for Chebyshev functionals

Rahman, Gauhar; Nisar, Kottakkaran Sooppy; Khan, Sami Ullah; Baleanu, Dumitru; Vijayakumar, V. (2021-12)

The goal of this present paper is to study some new inequalities for a class of differentiable functions connected with Chebyshev’s functionals by utilizing a fractional generalized weighted fractional integral involving ...
On the weighted fractional operators of a function with respect to another function

Jarad, Fahd; Abdeljawad, Thabet; Shah, K. (2020)

The primary goal of this study is to define the weighted fractional operators on some spaces. We first prove that the weighted integrals are bounded in certain spaces. Afterwards, we discuss the weighted fractional derivatives ...
On the statistical garch model for managing the risk by employing a fat-tailed distribution in finance

Long, H. Viet; Jebreen, H. Bin; Dassios, I.; Baleanu, Dumitru (2020-10)

The Conditional Value-at-Risk (CVaR) is a coherent measure that evaluates the risk for different investing scenarios. On the other hand, since the extreme value distribution has been revealed to furnish better financial ...
On the solutions of a fractional boundary value problem

Uğurlu, Ekin; Baleanu, Dumitru; Taş, Kenan (2018)

This paper is devoted to showing the existence and uniqueness of solution of a regular second-order nonlinear fractional differential equation subject to the ordinary boundary conditions. The Banach fixed point theorem is ...

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