Results 11 to 20 of about 879,634 (286)

Penalization method for a nonlinear Neumann PDE via weak solutions of reflected SDEs [PDF]

open access: yes, 2013
In this paper we prove an approximation result for the viscosity solution of a system of semi-linear partial differential equations with continuous coefficients and nonlinear Neumann boundary condition. The approximation we use is based on a penalization
Bahlali, Khaled   +2 more
core   +3 more sources

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

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

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

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   +4 more sources

A Strongly A-Stable Time Integration Method for Solving the Nonlinear Reaction-Diffusion Equation

open access: yesAbstract and Applied Analysis, 2015
The semidiscrete ordinary differential equation (ODE) system resulting from compact higher-order finite difference spatial discretization of a nonlinear parabolic partial differential equation, for instance, the reaction-diffusion equation, is highly ...
Wenyuan Liao
doaj   +1 more source

Image Quality Enhancement Model and its Application Based on PDE

open access: yesChemical Engineering Transactions, 2015
Partial differential equations application in digital image processing is developing rapidly in recent years. The method aim to establish a mathematical model with the partial differential equation, and the model will change the image based on partial ...
F. Yuan, Z.P. Wang
doaj   +1 more source

Arithmetic partial differential equations, I

open access: yesAdvances in Mathematics, 2010
Updated version of paper includes new results on ...
Buium, Alexandru, Simanca, Santiago R.
openaire   +4 more sources

Particles to partial differential equations parsimoniously [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2021
Equations governing physico-chemical processes are usually known at microscopic spatial scales, yet one suspects that there exist equations, e.g., in the form of partial differential equations (PDEs), that can explain the system evolution at much coarser, meso-, or macroscopic length scales.
Hassan Arbabi, Ioannis G. Kevrekidis
openaire   +3 more sources

On the discrete and continuous Miura Chain associated with the Sixth Painlevé Equation [PDF]

open access: yes, 1999
A Miura chain is a (closed) sequence of differential (or difference) equations that are related by Miura or B\"acklund transformations. We describe such a chain for the sixth Painlev\'e equation (\pvi), containing, apart from \pvi itself, a Schwarzian ...
Ablowitz   +25 more
core   +3 more sources

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