Results 11 to 20 of about 516,723 (184)

Oscillations for Neutral Functional Differential Equations [PDF]

open access: yesThe Scientific World Journal, 2014
We will consider a class of neutral functional differential equations. Some infinite integral conditions for the oscillation of all solutions are derived. Our results extend and improve some of the previous results in the literature.
Fatima N. Ahmed   +3 more
doaj   +2 more sources

On the origin of quantum mechanics [PDF]

open access: yes, 2005
Action at distance in Newtonian physics is replaced by finite propagation speeds in classical post--Newtonian physics. As a result, the differential equations of motion in Newtonian physics are replaced by functional differential equations, where the ...
Bohr   +38 more
core   +1 more source

On the origin of the deflection of light [PDF]

open access: yes, 2005
Action at distance in Newtonian physics is replaced by finite propagation speeds in classical post--Newtonian physics. As a result, the differential equations of motion in Newtonian physics are replaced by functional differential equations, where the ...
Assis   +30 more
core   +4 more sources

On a Class of Functional Differential Equations with Symmetries [PDF]

open access: yesSymmetry, 2019
It is shown that a class of symmetric solutions of scalar non-linear functional differential equations can be investigated by using the theory of boundary value problems. We reduce the question to a two-point boundary value problem on a bounded interval and present several conditions ensuring the existence of a unique symmetric solution.
Nataliya Dilna   +2 more
openaire   +3 more sources

Linear stochastic differential equations with functional boundary conditions [PDF]

open access: yes, 2002
We consider linear n-th order stochastic differential equations on [0,1], with linear boundary conditions supported by a finite subset of [0,1]. We study some features of the solution to these problems, and especially its conditional independence ...
Alabert, Aureli, Ferrante, Marco
core   +4 more sources

About a Problem for Loaded Parabolic-Hyperbolic Type Equation with Fractional Derivatives

open access: yesInternational Journal of Differential Equations, 2016
An existence and uniqueness of solution of local boundary value problem with discontinuous matching condition for the loaded parabolic-hyperbolic equation involving the Caputo fractional derivative and Riemann-Liouville integrals have been investigated ...
Kishin B. Sadarangani   +1 more
doaj   +1 more source

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

Structure Constants in the $N=1$ Super-Liouville Field Theory [PDF]

open access: yes, 1996
The symmetry algebra of $N=1$ Super-Liouville field theory in two dimensions is the infinite dimensional $N=1$ superconformal algebra, which allows one to prove, that correlation functions, containing degenerated fields obey some partial linear ...
Ambjorn   +27 more
core   +2 more sources

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

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