Results 21 to 30 of about 29,678 (237)

New Exact Solutions of Some Important Nonlinear Fractional Partial Differential Equations with Beta Derivative

open access: yesFractal and Fractional, 2022
In this work, the F-expansion method is used to find exact solutions of the space-time fractional modified Benjamin Bona Mahony equation and the nonlinear time fractional Schrödinger equation with beta derivative.
Erdogan Mehmet Ozkan
doaj   +1 more source

He's frequency–amplitude formulation for nonlinear oscillators using Jacobi elliptic functions

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2020
In this work, the Duffing’s type analytical frequency–amplitude relationship for nonlinear oscillators is derived by using Hés formulation and Jacobi elliptic functions.
Alex Elías-Zúñiga   +4 more
doaj   +1 more source

On the Asymptotics and Distribution of Values of the Jacobi Theta Functions and the Estimate of the Type of the Weierstrass Sigma Functions

open access: yesAxioms, 2021
A refined asymptotics of the Jacobi theta functions and their logarithmic derivatives have been received. The asymptotics of the Nevanlinna characteristics of the indicated functions and the arbitrary elliptic function have been found.
Mykola Korenkov, Yurii Kharkevych
doaj   +1 more source

Algebraic computational methods for solving three nonlinear vital models fractional in mathematical physics

open access: yesOpen Physics, 2021
This research paper uses a direct algebraic computational scheme to construct the Jacobi elliptic solutions based on the conformal fractional derivatives for nonlinear partial fractional differential equations (NPFDEs). Three vital models in mathematical
Gepreel Khaled A., Mahdy Amr M. S.
doaj   +1 more source

Approximate Analytical and Numeric Solutions to a Forced Damped Gardner Equation

open access: yesThe Scientific World Journal, 2022
In this paper, some exact traveling wave solutions to the integrable Gardner equation are reported. The ansatz method is devoted for deriving some exact solutions in terms of Jacobi and Weierstrass elliptic functions.
Alvaro H. Salas   +2 more
doaj   +1 more source

Quadratic Hamiltonians on non-Euclidean spaces of arbitrary constant curvature [PDF]

open access: yes, 2013
This paper derives explicit solutions for Riemannian and sub-Riemannian curves on non-Euclidean spaces of arbitrary constant cross-sectional curvature.
Biggs, James
core   +1 more source

Linear Superposition in Nonlinear Equations [PDF]

open access: yes, 2001
Even though the KdV and modified KdV equations are nonlinear, we show that suitable linear combinations of known periodic solutions involving Jacobi elliptic functions yield a large class of additional solutions.
A. C. Newell   +13 more
core   +3 more sources

Improved General Mapping Deformation Method for Nonlinear Partial Differential Equations in Mathematical Physics

open access: yesJournal of Applied Mathematics, 2013
We use the improved general mapping deformation method based on the generalized Jacobi elliptic functions expansion method to construct some of the generalized Jacobi elliptic solutions for some nonlinear partial differential equations in mathematical ...
Khaled A. Gepreel
doaj   +1 more source

On Elliptic and Hyperbolic Modular Functions and the Corresponding Gudermann Peeta Functions

open access: yesAxioms, 2015
In this article, we move back almost 200 years to Christoph Gudermann, the great expert on elliptic functions, who successfully put the twelve Jacobi functions in a didactic setting. We prove the second hyperbolic series expansions for elliptic functions
Thomas Ernst
doaj   +1 more source

Elliptic Hypergeometric Laurent Biorthogonal Polynomials with a Dense Point Spectrum on the Unit Circle [PDF]

open access: yes, 2008
Using the technique of the elliptic Frobenius determinant, we construct new elliptic solutions of the $QD$-algorithm. These solutions can be interpreted as elliptic solutions of the discrete-time Toda chain as well.
Tsujimoto, Satoshi, Zhedanov, Alexei
core   +6 more sources

Home - About - Disclaimer - Privacy