Results 21 to 30 of about 230,291 (288)

Linear multistep methods for optimal control problems and applications to hyperbolic relaxation systems [PDF]

open access: yes, 2018
We are interested in high-order linear multistep schemes for time discretization of adjoint equations arising within optimal control problems. First we consider optimal control problems for ordinary differential equations and show loss of accuracy for ...
Albi, Giacomo   +2 more
core   +2 more sources

System of linear ordinary differential and differential-algebraic equations and pseudo-spectral method

open access: yesComputers & Mathematics with Applications, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Saravi, M.   +3 more
openaire   +2 more sources

Some basic properties of infinite dimensional Hamiltonian systems [PDF]

open access: yes, 1974
We consider some fundamental properties of infinite dimensional Hamiltonian systems, both linear and nonlinear. For exemple, in the case of linear systems, we prove a symplectic version of the teorem of M. Stone.
Chernoff, P. R., Marsden, J. E.
core   +1 more source

The amazing fractional Maclaurin series for solving different types of fractional mathematical problems that arise in physics and engineering

open access: yesPartial Differential Equations in Applied Mathematics, 2023
Many applications and natural phenomena in the fields of physics and engineering are described by ordinary and partial differential equations. Therefore, obtaining solutions to these equations helps to analyze and understand the dynamics of these systems,
Marwan Alquran
doaj   +1 more source

Integrability of planar polynomial differential systems through linear differential equations [PDF]

open access: yes, 2005
In this work, we consider rational ordinary differential equations dy/dx = Q(x,y)/P(x,y), with Q(x,y) and P(x,y) coprime polynomials with real coefficients.
Giacomini, Héctor   +2 more
core   +6 more sources

Direct Power Series Approach for Solving Nonlinear Initial Value Problems

open access: yesAxioms, 2023
In this research, a new approach for solving fractional initial value problems is presented. The main goal of this study focuses on establishing direct formulas to find the coefficients of approximate series solutions of target problems.
Emad Salah   +3 more
doaj   +1 more source

Solving Linear and Non Linear Stiff System of Ordinary Differential Equations by Multistage Adomian Decomposition Method [PDF]

open access: yesThird International Conference on Advances in Applied Science and Environmental Technology - ASET 2015, 2015
In this paper, linear and non-linear stiff systems of ordinary differential equations are solved by the classical Adomian decomposition method (ADM) and the multistage Adomian decomposition method (MADM). The MADM is a technique adapted from the standard Adomian decomposition method (ADM) where standard ADM is converted into a hybrid numeric-analytic ...
I HASHIM, M S, MD ALAL
openaire   +1 more source

Fundamental systems and solutions of nonhomogeneous equations for a pair of mixed linear ordinary differential equations [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1990
AbstractTwo different ordinary differential operators L1 and L2 (not of the same order) defined on two adjacent intervals I1 and I2, respectively, with certain mixed conditions at the interface are considered. These problems are encountered in the study of ‘acoustic waveguides in ocean’, ‘transverse vibrations in nonhomogeneous strings’, etc.
M. Venkatesulu, T. Gnana Bhaskar
openaire   +1 more source

The quantum Arnold transformation [PDF]

open access: yes, 2010
By a quantum version of the Arnold transformation of classical mechanics, all quantum dynamical systems whose classical equations of motion are non-homogeneous linear second-order ordinary differential equations, including systems with friction linear in
Aldaya, Victor   +3 more
core   +1 more source

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