Results 11 to 20 of about 89,989 (306)

On Fundamental Solution for Autonomous Linear Retarded Functional Differential Equations

open access: yesMathematics, 2020
This document focuses attention on the fundamental solution of an autonomous linear retarded functional differential equation (RFDE) along with its supporting cast of actors: kernel matrix, characteristic matrix, resolvent matrix; and the Laplace ...
Clement McCalla
doaj   +2 more sources

Existence of Nonnegative Solutions of Linear Autonomous Functional Differential Equations

open access: yesMathematics, 2020
It is shown that if we exclude the existence of nontrivial small solutions, then a linear autonomous functional differential equation has a nontrivial nonnegative solution if and only if it has a nonnegative eigenfunction.
Mihály Pituk
doaj   +2 more sources

Remark to transformations of linear differential and functional-differential equations [PDF]

open access: yesCzechoslovak Mathematical Journal, 2000
summary:For linear differential and functional-differential equations of the $n$-th order criteria of equivalence with respect to the pointwise transformation are ...
Tryhuk, Václav
core   +2 more sources

On the Cauchy problem for linear hyperbolic functional-differential equations [PDF]

open access: yesCzechoslovak Mathematical Journal, 2001
summary:We study the question of the existence, uniqueness, and continuous dependence on parameters of the Carathéodory solutions to the Cauchy problem for linear partial functional-differential equations of hyperbolic type.
Šremr, Jiří   +2 more
core   +4 more sources

Theory of Functional Connections Applied to Linear Discontinuous Differential Equations

open access: yesMathematics
This article introduces two numerical methods based on the Theory of Functional Connections (TFC) for solving linear ordinary differential equations that involve step discontinuities in the forcing term. The novelty of the first proposed approach lies in
Trent White, Daniele Mortari
doaj   +2 more sources

The Optimization of Trajectories of Linear Functional Differential Equations [PDF]

open access: yesSIAM Journal on Control, 1970
Our aim in this paper is to examine a number of fundamental questions in the theory of optimal control of processes monitored by certain general systems of linear functional differential equations with finite memories. In our model the controls may appear in a very general nonlinear functional manner which permits us to consider retardations of a ...
Banks, H. T., Jacobs, Marc Q.
openaire   +2 more sources

Classical Theory of Linear Multistep Methods for Volterra Functional Differential Equations

open access: yesDiscrete Dynamics in Nature and Society, 2021
Based on the linear multistep methods for ordinary differential equations (ODEs) and the canonical interpolation theory that was presented by Shoufu Li who is exactly the second author of this paper, we propose the linear multistep methods for general ...
Yunfei Li, Shoufu Li
doaj   +1 more source

On the Control of a Linear Functional-Differential Equation with Quadratic Cost [PDF]

open access: yesSIAM Journal on Control, 1970
Riccati-like linear functional differential equation with quadratic cost, analyzing feedback control solution existence and ...
Kushner, H. J., Barnea, D. I.
openaire   +2 more sources

Unique Solvability of the Initial-Value Problem for Fractional Functional Differential Equations—Pantograph-Type Model

open access: yesFractal and Fractional, 2023
Contrary to the initial-value problem for ordinary differential equations, where the classical theory of establishing the exact unique solvability conditions exists, the situation with the initial-value problem for linear functional differential ...
Natalia Dilna
doaj   +1 more source

General exact solvability conditions for the initial value problems for linear fractional functional differential equations [PDF]

open access: yes, 2023
summary:Conditions on the unique solvability of linear fractional functional differential equations are established.
Dilna, Natalia
core   +1 more source

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