Results 1 to 10 of about 27,914 (184)

Existence of Limit Cycles for a Class of Quartic Polynomial Differential System Depending on Parameters [PDF]

open access: yesJournal of Mathematics, 2021
We studied the existence of limit cycles for the quartic polynomial differential systems depending on parameters. To prove that, first, we used the formal series method based on Poincare’ ideas to determine the center-focus. Then, by the Hopf bifurcation
Sarah Abdullah Qadha   +2 more
doaj   +2 more sources

Embedded solitons, chaotic behavior, bifurcation of cubic-quartic χ(2) and χ(3) nonlinear susceptibilities with multiplicative white noise

open access: yesResults in Physics, 2023
The main objective of this paper is to study the chaotic behavior and embedded soliton of cubic-quartic χ(2) and χ(3) nonlinear susceptibilities with multiplicative white noise.
Zhao Li, Xue Zhang, Fang Miao
doaj   +1 more source

General solutions and applications of the coupled Drinfel’d–Sokolov–Wilson equation

open access: yesExamples and Counterexamples, 2023
We report a new batch of wave solutions for the coupled Drinfel’d–Sokolov–Wilson equation which represents a coupled system of nonlinear partial differential equations (NLPDEs).
Shreya Mitra   +2 more
doaj   +1 more source

A new order m – 1 rational integrator with an inhomogeneuous constant

open access: yesScientific African, 2023
In this research work we derived a new order m – 1, rational integrator with an inhomogeneous constant for the solution of ordinary differential equations.
Fidelis Ebhohomen   +1 more
doaj   +1 more source

New optical soliton solutions to the (n+1) dimensional time fractional order Sinh-Gordon equation

open access: yesResults in Physics, 2023
This article studies and constructs new optical soliton solutions for the (n+1)-dimensional time fractional order Sinh-Gordon equation. First, we change the differential equation into Ordinary differential equation which is connected with a quartic ...
Da Shi, Zhao Li
doaj   +1 more source

Dynamics and optical solitons in polarization-preserving fibers for the cubic–quartic complex Ginzburg–Landau equation with quadratic–cubic law nonlinearity

open access: yesResults in Physics, 2023
In this paper, the cubic–quartic complex Ginzburg–Landau (CGL) equation is investigated by using the trial function method. The traveling wave hypothesis is applied to convert the CGL equation to an ordinary differential equation (ODE), which is ...
Chen Peng, Zhao Li
doaj   +1 more source

Intelligent Adaptive Tracking Controller Design for Stochastic Switched Pure-Feedback Nonlinear Systems With Input Saturation and Non-Lower Triangular Structure

open access: yesIEEE Access, 2020
This paper concentrates on the design of intelligent adaptive tracking controller for stochastic switched nonlinear pure-feedback systems with input saturation and non-lower triangular structure.
Ji-Dong Liu   +4 more
doaj   +1 more source

On two-dimensional integrable models with a cubic or quartic integral of motion [PDF]

open access: yes, 2013
Integrable two-dimensional models which possess an integral of motion cubic or quartic in velocities are governed by a single prepotential, which obeys a nonlinear partial differential equation.
Galajinsky, Anton, Lechtenfeld, Olaf
core   +3 more sources

Photon radiation in $e^+e^-\to$ hadrons at low energies with CARLOMAT 3.1 [PDF]

open access: yes, 2017
We present a sample of results for the cross sections of several processes of low energetic $e^+e^-$ annihilation into final states containing pions accompanied by one or two photons, or a light lepton pair.
Jegerlehner, Fred, Kolodziej, Karol
core   +3 more sources

A geometric approach to Catlin's boundary systems [PDF]

open access: yes, 2018
For a point $p$ in a smooth real hypersurface $M\subset\C^n$, where the Levi form has the nontrivial kernel $K^{10}_p$, we introduce an invariant cubic tensor $\tau^3_p \colon \C T_p \times K^{10}_p \times \overline{K^{10}_p} \to \C\otimes (T_p/H_p ...
Zaitsev, Dmitri
core   +3 more sources

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