Results 31 to 40 of about 269,773 (341)

On the geometric structure of characteristic vector fields related with nonlinear equations of the Hamilton-Jacobi type [PDF]

open access: yesOpuscula Mathematica, 2007
The Cartan-Monge geometric approach to the characteristics method for Hamilton-Jacobi type equations and nonlinear partial differential equations of higher orders is analyzed.
Natalia K. Prykarpatska   +1 more
doaj  

Automatic symmetrization and energy estimates using local operators for partial differential equations [PDF]

open access: yes, 2007
We develop a method for automatically symmetrizing Petrowsky well-posed Cauchy problems for constant coefficient linear partial differential equations. The method is rooted in the Sturm sequence technique for establishing the location of the roots of a ...
Appelö, Daniel,, Hagstrom, Thomas,
core   +1 more source

Dynamics of cell growth: Exponential growth and division after a minimum cell size

open access: yesPartial Differential Equations in Applied Mathematics
In this paper, we consider a mathematical model for cell division using a Pantograph-type nonlocal partial differential equation, accompanied by relevant initial and boundary conditions. This formulation results in a nonlocal singular eigenvalue problem.
M. Mohsin, A.A. Zaidi, B. van Brunt
doaj   +1 more source

A Partial Functional Differential Equation

open access: yesJournal of Mathematical Analysis and Applications, 2001
The author of this interesting paper investigates the partial functional differential equation \[ \partial u(x,t)\partial t =k \partial^2 u(x,t)\partial x^2+ru(x,t-T)[1-u(x,t)], \;\;t\geq 0, \;\;x\in [{}0,\pi ]{} \] under the boundary condition \(u(0,t)=u(\pi ,t)=0\) (\(t>0\)) and \(u(x,s)=\phi (x,s)\), \(-T\leq s\leq 0\), \(0\leq x\leq \pi \).
openaire   +2 more sources

Dichotomy and periodic solutions to partial functional differential equations

open access: yes, 2017
We establish a sufficient condition for existence and uniqueness of periodic solutions to partial functional differential equations of the form \begin{document} $\dot{u}=A(t)u+F(t)(u_t)+g(t,u_t)$ \end{document} on a Banach space \begin{document} $X$ \end{
N. Huy, Ngo Quy Dang
semanticscholar   +1 more source

The Multivariate Theory of Functional Connections: Theory, Proofs, and Application in Partial Differential Equations [PDF]

open access: yes, 2020
This article presents a reformulation of the Theory of Functional Connections: a general methodology for functional interpolation that can embed a set of user-specified linear constraints. The reformulation presented in this paper exploits the underlying
Daniele Mortari   +2 more
core   +1 more source

Meshfree methods for partial differential equations IX [PDF]

open access: yes, 2022
This volume collects selected papers presented at the Ninth International Workshop on Meshfree Methods held in Bonn, Germany in September 2017. They address various aspects of this very active research field and cover topics from applied mathematics ...

core   +1 more source

Numerical solution methods for fractional partial differential equations [PDF]

open access: yes, 2017
Fractional partial differential equations have been developed in many different fields such as physics, finance, fluid mechanics, viscoelasticity, engineering and biology. These models are used to describe anomalous diffusion.
Osman, Sheelan Abdulkader
core   +1 more source

Exponential Stability in Mean Square for Neutral Stochastic Partial Functional Differential Equations with Impulses

open access: yesJournal of Applied Mathematics, 2013
We discuss the exponential stability in mean square of mild solution for neutral stochastic partial functional differential equations with impulses. By applying impulsive Gronwall-Bellman inequality, the stochastic analytic techniques, the fractional ...
Nan Ding
doaj   +1 more source

Admissible integral manifolds for partial neutral functional-differential equations

open access: yesUkrains’kyi Matematychnyi Zhurnal, 2022
UDC 517.9 We prove the existence and attraction property for admissible invariant unstable and center-unstable manifolds of admissible classes of solutions to the partial neutral functional-differential equation in Banach space X   of the form  & ∂ ∂ t F
Thieu Huy Nguyen   +2 more
openaire   +1 more source

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