Results 11 to 20 of about 11,252,851 (310)

4-dimensional zero-Hopf bifurcation for polynomial differentials systems with cubic homogeneous nonlinearities via averaging theory

open access: yesInternational Journal of Dynamical Systems and Differential Equations, 2020
The averaging theory of second order shows that for polynomial differential systems in ℝ4 with cubic homogeneous nonlinearities at least nine limit cycles can be born in a zero-Hopf bifurcation.
Amina Feddaoui, J. Llibre, A. Makhlouf
semanticscholar   +1 more source

On the torus bifurcation in averaging theory [PDF]

open access: yesJournal of Differential Equations, 2018
In this paper, we take advantage of the averaging theory to investigate a torus bifurcation in two-parameter families of 2D nonautonomous differential equations.
M. R. Cândido, D. Novaes
semanticscholar   +1 more source

Periodic solutions of some polynomial differential systems in dimension 5 via averaging theory

open access: yesNonautonomous Dynamical Systems, 2023
In this article, we provide sufficient conditions for the existence of periodic solutions for the polynomial differential system of the form x˙=−y+εP1(x,y,z,u,v)+h1(t),y˙=x+εP2(x,y,z,u,v)+h2(t),z˙=−u+εP3(x,y,z,u,v)+h3(t),u˙=z+εP4(x,y,z,u,v)+h4(t),v˙=λv ...
Tabet Achref Eddine, Makhlouf Amar
doaj   +1 more source

Limit cycles in piecewise smooth perturbations of a class of cubic differential systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this paper, we study the bifurcation of limit cycles from a class of cubic integrable non-Hamiltonian systems under arbitrarily small piecewise smooth perturbations of degree $n$.
Dan Sun, Yunfei Gao, Linping Peng, Li Fu
doaj   +1 more source

WASPAS method and Aczel-Alsina aggregation operators for managing complex interval-valued intuitionistic fuzzy information and their applications in decision-making [PDF]

open access: yesPeerJ Computer Science, 2023
Aczel-Alsina t-norm and t-conorm are a valuable and feasible technique to manage ambiguous and inconsistent information because of their dominant characteristics of broad parameter values.
Haojun Fang   +4 more
doaj   +2 more sources

On the Zero-Hopf Bifurcation of the Lotka–Volterra Systems in R 3

open access: yesMathematics, 2020
Here we study 3-dimensional Lotka–Volterra systems. It is known that some of these differential systems can have at least four periodic orbits bifurcating from one of their equilibrium points.
Maoan Han, Jaume Llibre, Yun Tian
doaj   +1 more source

On the Existence and Uniqueness of the ODE Solution and Its Approximation Using the Means Averaging Approach for the Class of Power Electronic Converters

open access: yesMathematics, 2021
Power electronic converters are mathematically represented by a system of ordinary differential equations discontinuous right-hand side that does not verify the conditions of the Cauchy-Lipschitz Theorem.
Santolo Meo, Luisa Toscano
doaj   +1 more source

Limit cycles of Liénard polynomial systems type by averaging method

open access: yesMoroccan Journal of Pure and Applied Analysis, 2020
We apply the averaging theory of first and second order for studying the limit cycles of generalized polynomial Linard systems of the ...
Boulfoul Amel, Mellahi Nawal
doaj   +1 more source

Ensemble average theory of gravity [PDF]

open access: yesPhysical Review D, 2016
6 pages, typos corrected, comments are welcome, replaced with published ...
openaire   +2 more sources

On the limit cycles for a class of eighth-order differential equations

open access: yesMoroccan Journal of Pure and Applied Analysis, 2020
In this article, we provide sufficient conditions for the existence of periodic solutions of the eighth-order differential equation x(8)-(1+p2+λ2+μ2)x(6)+Ax⃜+Bx¨+p2λ2μ2x=ɛF(t,x,x˙,x¨,x⃛,x⃜,x(5),x(6)x(7)),{x^{\left( 8 \right)}} - \left( {1 + {p^2 ...
Berrehail Chems Eddine   +2 more
doaj   +1 more source

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