Results 11 to 20 of about 1,177,365 (300)

On the Relation of Delay Equations to First-Order Hyperbolic Partial Differential Equations [PDF]

open access: yes, 2013
This paper establishes the equivalence between systems described by a single first-order hyperbolic partial differential equation and systems described by integral delay equations.
Karafyllis, Iasson, Krstic, Miroslav
core   +1 more source

Nonlinear differential equation with first order partial derivatives

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2018
The asymptotic behavior of solutions of a nonlinear differential equation with first-order partial derivatives solved with respect to one of the derivatives is investigated.
T. М. Aldibekov, M. M. Aldazharova
doaj   +1 more source

SYMMETRIES OF PARTIAL DIFFERENTIAL EQUATIONS [PDF]

open access: yesJournal of the Korean Mathematical Society, 2003
We establish a link between the study of completely integrable systems of partial differential equations and the study of generic submanifolds in C^n. Using the recent developments of Cauchy-Riemann geometry we provide the set of symmetries of such a system with a Lie group structure.
Gaussier, Hervé, Merker, Joel
openaire   +6 more sources

Novel Bäcklund Transformations for Integrable Equations

open access: yesMathematics, 2022
In this paper, we construct a new matrix partial differential equation having a structure and properties which mirror those of a matrix fourth Painlevé equation recently derived by the current authors.
Pilar Ruiz Gordoa, Andrew Pickering
doaj   +1 more source

Symmetry solution on fractional equation

open access: yesAn International Journal of Optimization and Control: Theories & Applications, 2017
As we know nearly all physical, chemical, and biological processes in nature can be described or modeled by dint of a differential equation or a system of differential equations, an integral equation or an integro-differential equation.
Gulistan Iskandarova, Dogan Kaya
doaj   +1 more source

Analysis and Recognition Method of Internet Image Public Opinion Based on Partial Differential Equation

open access: yesAdvances in Mathematical Physics, 2021
This article comprehensively and systematically expounds the development trends and basic theory of partial differential methods, analyzes the characteristics of sampling multiscale transformation in detail, and deeply studies the network image denoising
Yang Zhang
doaj   +1 more source

Solution of fractional modified Kawahara equation: a semi-analytic approach

open access: yesMathematics in Applied Sciences and Engineering, 2023
The present study examines a semi-analytical method known as the Fractional Residual Power Series Method for obtaining solutions to the non-linear, time-fractional Kawahara and modified Kawahara equations.
Sagar Khirsariya   +2 more
doaj   +1 more source

The Helically-Reduced Wave Equation as a Symmetric-Positive System [PDF]

open access: yes, 2003
Motivated by the partial differential equations of mixed type that arise in the reduction of the Einstein equations by a helical Killing vector field, we consider a boundary value problem for the helically-reduced wave equation with an arbitrary source ...
Torre, C. G.
core   +4 more sources

Permeability Models for Magma Flow through the Earth's Mantle: A Lie Group Analysis

open access: yesJournal of Applied Mathematics, 2013
The migration of melt through the mantle of the Earth is governed by a third-order nonlinear partial differential equation for the voidage or volume fraction of melt.
N. Mindu, D. P. Mason
doaj   +1 more source

Solving Partial Differential Equations Using Deep Learning and Physical Constraints

open access: yesApplied Sciences, 2020
The various studies of partial differential equations (PDEs) are hot topics of mathematical research. Among them, solving PDEs is a very important and difficult task.
Yanan Guo   +3 more
doaj   +1 more source

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