Results 31 to 40 of about 5,252,215 (280)

Differential difference inequalities related to parabolic functional differential equations [PDF]

open access: yesOpuscula Mathematica, 2010
Initial boundary value problems for nonlinear parabolic functional differential equations are transformed by discretization in space variables into systems of ordinary functional differential equations.
Milena Netka
doaj   +1 more source

Stability results for the functional differential equations associated to water hammer in hydraulics

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
There is considered a system of two sets of partial differential equations describing the water hammer in a hydroelectric power plant containing the dynamics of the tunnel, turbine penstock, surge tank and hydraulic turbine.
Vladimir Rasvan
doaj   +1 more source

Reducible functional differential equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
This is the first part of a survey on analytic solutions of functional differential equations (FDE). Some classes of FDE that can be reduced to ordinary differential equations are considered since they often provide an insight into the structure of ...
S. M. Shah, Joseph Wiener
doaj   +1 more source

Asymptotic relationships between two higher order ordinary differential equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Some asymptotic relationships between the two ordinary differential equations (1)                                                  x(n)+p1(t)x(n−1)+…+pn(t)x=0, (2)                                      y(n)+p1(t)y(n−1)+…+pn(t)y=f(t,y), are studied ...
Takasi Kusano
doaj   +1 more source

Oscillation of functional differential equations

open access: yesMathematical and Computer Modelling, 2005
Some new criteria for the oscillation of functional differential equations of the form, d/dt[1/a(n-1)(t) d/dt q (t) f (x [g (t)]) = 0, dt a._1 (t) Tt -a,,-2 (t) Tt -al(t) dt are presented in this paper. @ 2005 Elsevier Ltd. All rights reserved.
Agarwal, R. P.   +3 more
openaire   +3 more sources

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

Time averaging for functional differential equations

open access: yesJournal of Applied Mathematics, 2003
We present a result on the averaging for functional differential equations on finite time intervals. The result is formulated in both classical mathematics and nonstandard analysis; its proof uses some methods of nonstandard analysis.
Mustapha Lakrib
doaj   +1 more source

Measure functional differential equations and functional dynamic equations on time scales [PDF]

open access: yes, 2012
We study measure functional differential equations and clarify their relation to generalized ordinary differential equations. We show that functional dynamic equations on time scales represent a special case of measure functional differential equations ...
G. Mesquita, Jaqueline   +7 more
core   +1 more source

Numerical methods for ordinary differential equations with applications to partial differential equations [PDF]

open access: yes, 1983
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis develops a number of algorithms for the numerical solution of ordinary differential equations with applications to partial differential equations.
Khaliq, Abdul Qayyum Masud
core   +7 more sources

Discrete Razumikhin-type technique and stability of the Euler-Maruyama method to stochastic functional differential equations [PDF]

open access: yes, 2013
A discrete stochastic Razumikhin-type theorem is established to investigate whether the Euler--Maruyama (EM) scheme can reproduce the moment exponential stability of exact solutions of stochastic functional differential equations (SFDEs).
Wu, Fuke   +2 more
core   +4 more sources

Home - About - Disclaimer - Privacy