Results 11 to 20 of about 1,391,702 (218)

Dependence of the Analytical Approximate Solution to the Van der Pol Equation on the Perturbation of a Moving Singular Point in the Complex Domain

open access: yesAxioms, 2023
This paper considers a theoretical substantiation of the influence of a perturbation of a moving singular point on the analytical approximate solution to the Van der Pol equation obtained earlier by the author.
Victor Orlov
doaj   +1 more source

Construction of an Approximate Analytical Solution for Multi-Dimensional Fractional Zakharov-Kuznetsov Equation via Aboodh Adomian Decomposition Method

open access: yesSymmetry, 2021
In this paper, the Aboodh transform is utilized to construct an approximate analytical solution for the time-fractional Zakharov–Kuznetsov equation (ZKE) via the Adomian decomposition method.
S. Rashid, K. Kubra, J. L. Guirao
semanticscholar   +1 more source

Analytically approximate solutions to higher derivative gravity [PDF]

open access: yesPhysical Review D, 2020
We obtain analytical approximate black hole solutions for higher derivative gravity in the presence of Maxwell electromagnetic source. We construct near horizon and asymptotic solutions and then use these to obtain an approximate analytic solution using a continued fraction method to get a complete solution.
S. N. Sajadi   +3 more
openaire   +2 more sources

Analytically approximation solution to $$R^{2}$$ gravity

open access: yesThe European Physical Journal C, 2023
AbstractIn this paper, we obtain analytical approximate black hole solutions in the framework of f(R) gravity and the absence of a cosmological constant. In this area, we apply the equations of motion of the theory to a spherically symmetric spacetime with one unknown function and derive black hole solutions without any constraints on the Ricci scalar.
Sajadi, Seyed Naseh   +2 more
openaire   +2 more sources

Approximate Analytical Solution for Quadratic Riccati Differential Equation [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2013
In this paper, we introduce an efficient method for solving the quadratic Riccati differential equation. In this technique, combination of Laplace transform and new homotopy perturbation methods (LTNHPM) are considered as an algorithm to the exact ...
H. Aminikhah
doaj   +1 more source

Analytical approach to study water infiltration phenomenon in unsaturated soils using reduced differential transform method [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2022
In hydrology and soil sciences, infiltration is the process by which water on the ground surface enters the soil, and is described mathematically by Richard's equation.
Patel Yogeshwari, Jayesh M Dhodiya
doaj   +1 more source

Approximate Analytical Solution to the Zonal Harmonics Problem Using Koopman Operator Theory [PDF]

open access: yesJournal of Guidance Control and Dynamics, 2020
This work introduces the use of the Koopman Operator Theory to generate analytical solutions for the zonal harmonics problem of a satellite orbiting a non spherical celestial body.
D. Arnas, R. Linares
semanticscholar   +1 more source

Analytically approximation solution to Einstein-Cubic gravity

open access: yesThe European Physical Journal C, 2022
AbstractIn this work, we introduce analytical approximate black hole solutions in Einstein-Cubic gravity. To obtain complete solutions, we construct the near horizon and asymptotic solutions as the first step. Then, the approximate analytic solutions are obtained through continued-fraction expansion. We also compute the thermodynamic quantities and use
Sajadi, S., Hendi, S.
openaire   +3 more sources

Analytical approximate solution of fractional order smoking epidemic model

open access: yesAdvances in Mechanical Engineering, 2022
In this paper, the fractional smoking epidemic model is presented. The model is presented in terms of Caputo’s fractional derivation. The fractional differential transformation method (FDTM) is presented to find an approximate analytical solution to the ...
Hatıra Günerhan   +8 more
doaj   +1 more source

Efficient Solution of Fractional-Order SIR Epidemic Model of Childhood Diseases With Optimal Homotopy Asymptotic Method

open access: yesIEEE Access, 2022
In providing an accurate approximate analytical solution to the non-linear system of fractional-order susceptible-infected-recovered epidemic model (FOSIREM) of childhood disease has been a challenge, because no norm to guarantees the convergence of the ...
Okundalaye Oluwaseun Olumide   +2 more
doaj   +1 more source

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