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Applications of Solvable Lie Algebras to a Class of Third Order Equations

open access: yesMathematics, 2022
A family of third-order partial differential equations (PDEs) is analyzed. This family broadens out well-known PDEs such as the Korteweg-de Vries equation, the Gardner equation, and the Burgers equation, which model many real-world phenomena. Furthermore,
María S. Bruzón   +3 more
doaj   +1 more source

Reductions and Exact Solutions of Nonlinear Wave-Type PDEs with Proportional and More Complex Delays

open access: yesMathematics, 2023
The study gives a brief overview of publications on exact solutions for functional PDEs with delays of various types and on methods for constructing such solutions.
Andrei D. Polyanin, Vsevolod G. Sorokin
doaj   +1 more source

General solutions of the Laplace equation

open access: yesPartial Differential Equations in Applied Mathematics, 2022
With the purpose of concisely and effectively obtaining the general or exact solutions of partial differential equations (PDEs), we put forward some universal Z1transformations in present paper.
Hong Lai Zhu
doaj   +1 more source

Buckling Analysis of Nano Composite Plates Based on Combination of the Incremental Load Technique and Dynamic Relaxation Method [PDF]

open access: yesMechanics of Advanced Composite Structures, 2021
In this paper, a different method, incremental load technique in conjunction with dynamic relaxation (DR) method, is employed to analyze the buckling behavior of composite plates reinforced with functionally graded (FG) distributions of single-walled ...
Vahid Zeighami, M.E. Golmakani
doaj   +1 more source

Nonlinear Pantograph-Type Diffusion PDEs: Exact Solutions and the Principle of Analogy

open access: yesMathematics, 2021
We study nonlinear pantograph-type reaction–diffusion PDEs, which, in addition to the unknown u=u(x,t), also contain the same functions with dilated or contracted arguments of the form w=u(px,t), w=u(x,qt), and w=u(px,qt), where p and q are the free ...
Andrei D. Polyanin, Vsevolod G. Sorokin
doaj   +1 more source

Multi-Parameter Reaction–Diffusion Systems with Quadratic Nonlinearity and Delays: New Exact Solutions in Elementary Functions

open access: yesMathematics, 2022
The study considers a nonlinear multi-parameter reaction–diffusion system of two Lotka–Volterra-type equations with several delays. It treats both cases of different diffusion coefficients and identical diffusion coefficients.
Andrei D. Polyanin, Alexei I. Zhurov
doaj   +1 more source

Families of Solutions of Multitemporal Nonlinear Schrödinger PDE

open access: yesMathematics, 2021
The multitemporal nonlinear Schrödinger PDE (with oblique derivative) was stated for the first time in our research group as a universal amplitude equation which can be derived via a multiple scaling analysis in order to describe slow modulations of the ...
Cristian Ghiu   +2 more
doaj   +1 more source

On the analyticity of solutions of first-order nonlinear PDE [PDF]

open access: yesTransactions of the American Mathematical Society, 1992
(From the author's abstract:) Let \(x\in R^ m\), \(t\in R^ 1\) and \(u\in C^ 2\). We discuss local and microlocal analyticity for solutions \(u\) to the nonlinear equation \(u_ t=f(x,t,u,u_ x)\). Here \(f(x,t,\zeta_ 0,\zeta)\) is complex valued and analytic in all arguments. We also assume \(f\) to be holomorphic in \((\zeta_ 0,\zeta)\in C\times C^ m\).
Hanges, Nicholas, Treves, François
openaire   +2 more sources

Application of Generalized Logistic Function to Travelling Wave Solutions for a Class of Nonlinear Evolution Equations

open access: yesMathematics, 2022
The generalized Logistic function that solves a first-order nonlinear ODE with an arbitrary positive power term of the dependent variable is introduced in this paper, by means of which the traveling wave solutions of a class of nonlinear evolution ...
Lingxiao Li   +2 more
doaj   +1 more source

New algorithm for the approximate solution of generalized seventh order Korteweg-Devries equation arising in shallow water waves

open access: yesResults in Physics, 2021
In the present article, we present for the first time optimal auxiliary function method (OAFM) for partial differential equation (PDEs). To find efficient and precision the proposed method, we take Lax’s seventh order korteweg-de Vries (KdV) and seventh ...
Laiq Zada   +5 more
doaj   +1 more source

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