Results 21 to 30 of about 3,715,842 (277)

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

Q-measure-valued solution of a hyperbolic partial differential equation

open access: yesPartial Differential Equations in Applied Mathematics, 2022
In this article, we introduced a new measure termed as Q-measure to represent a weak* limit of the barycenter of a sequence of Borel measurable function. The Q-measure is defined by replacing the sequence of measurable functions via the barycenter of the
Jisha C.R.
doaj   +1 more source

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

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   +3 more sources

Weak SINDy for partial differential equations [PDF]

open access: yesJournal of Computational Physics, 2021
Sparse Identification of Nonlinear Dynamics (SINDy) is a method of system discovery that has been shown to successfully recover governing dynamical systems from data (Brunton et al., PNAS, '16; Rudy et al., Sci. Adv. '17). Recently, several groups have independently discovered that the weak formulation provides orders of magnitude better robustness to ...
Daniel A. Messenger, David M. Bortz
openaire   +5 more sources

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

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

Design of partial differential equation hull surfaces using genetic algorithms

open access: yes, 2005
The automatic generation of a range of flat-sided hull forms which satisfy constraints on various primary and secondary geometric parameters is considered. The curved section of each hull surface is generated using the Partial Differential Equation (PDE)
Lowe, Tim W.
core   +5 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

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