Results 41 to 50 of about 516,723 (184)

RADIATIVE DAMPING AND FUNCTIONAL DIFFERENTIAL EQUATIONS [PDF]

open access: yesModern Physics Letters A, 2011
We propose a general technique to solve the classical many-body problem with radiative damping. We modify the short-distance structure of Maxwell electrodynamics. This allows us to avoid runaway solutions as if we had a covariant model of extended particles.
Raju, Suvrat, Raju, C. K.
openaire   +3 more sources

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

Mathematical analysis of a one-dimensional model for an aging fluid

open access: yes, 2012
We study mathematically a system of partial differential equations arising in the modelling of an aging fluid, a particular class of non Newtonian fluids.
Benoit, David   +3 more
core   +3 more sources

Functional differential equations arising in cell-growth [PDF]

open access: yes, 2009
Non-local differential equations are notoriously difficult to solve. Cell-growth models for population growth of a cohort structured by size, simultaneously growing and dividing, give rise to a class of non-local eigenvalue problems, whose “principal ...
Begg, R E, Wake, Graeme
core  

Functional differential equations close to differential equations [PDF]

open access: yesBulletin of the American Mathematical Society, 1966
when the lag function r(t) is nearly constant for large /, and has also asked for conditions on the function r under which all solutions approach zero as t—» oo. The purpose of this announcement is to initiate a study of various stability and oscillation problems for equations with perturbed lag functions, and to suggest that a modification of the ...
openaire   +2 more sources

On functional differential equations associated to controlled structures with propagation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
The method of integration along the characteristics has turned to be quite fruitful for qualitative analysis of physical and engineering systems described by large classes of partial differential equations of hyperbolic type in the plane (time and one ...
Vladimir Rasvan
doaj   +1 more source

Stochastic Reaction-diffusion Equations Driven by Jump Processes

open access: yes, 2018
We establish the existence of weak martingale solutions to a class of second order parabolic stochastic partial differential equations. The equations are driven by multiplicative jump type noise, with a non-Lipschitz multiplicative functional.
A Debussche   +69 more
core   +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

Functional Solutions of Stochastic Differential Equations

open access: yesMathematics
We present an integration condition ensuring that a stochastic differential equation dXt=μ(t,Xt)dt+σ(t,Xt)dBt, where μ and σ are sufficiently regular, has a solution of the form Xt=Z(t,Bt).
Imme van den Berg
doaj   +1 more source

Uncertainty functional differential equations for finance [PDF]

open access: yesSurveys in Mathematics and its Applications, 2010
In this paper, we prove a local existence and uniqueness result for uncertain functional differential equation driven by canonical process.
Iuliana Carmen Bărbăcioru
doaj  

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