Results 31 to 40 of about 19,239 (301)

New results for time reversed symplectic dynamic systems and quadratic functionals

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we examine time scale symplectic (or Hamiltonian) systems and the associated quadratic functionals which contain a forward shift in the time variable.
Roman Simon Hilscher, Petr Zemanek
doaj   +1 more source

Linear port-Hamiltonian DAE systems revisited

open access: yesSystems & Control Letters, 2022
13 ...
Arjan van der Schaft, Volker Mehrmann
openaire   +4 more sources

On Linear Hamiltonian Systems [PDF]

open access: yesMATEC Web of Conferences, 2017
In this paper we consider the normalization of quadratic Hamiltonian. We get the new method to find the generating function of the canonical transformation. We obtain the solution of the system of matrix equations to find this transformation. The corresponding Hamiltonian matrix has multiply eigenvalues.
openaire   +2 more sources

A Liapunov Inequality for Linear Hamiltonian Systems [PDF]

open access: yesMathematical Inequalities & Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Clark, Steve, Hinton, Don
openaire   +1 more source

Survey of Eight Modern Methods of Hamiltonian Mechanics

open access: yesAxioms, 2021
Here we describe eight new methods, arisen in the last 60 years, to study solutions of a Hamiltonian system with n degrees of freedom. The first six of them are intended for systems with small parameters or without them.
Alexander D. Bruno, Alexander B. Batkhin
doaj   +1 more source

Nonlinear cross Gramians and gradient systems [PDF]

open access: yes, 2007
We study the notion of cross Gramians for non-linear gradient systems, using the characterization in terms of prolongation and gradient extension associated to the system.
Jacquelien M. A. Scherpen   +5 more
core   +1 more source

On the deformation of linear Hamiltonian systems [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2021
30 pages, minor ...
openaire   +3 more sources

Some Oscillation Results for Linear Hamiltonian Systems [PDF]

open access: yesJournal of Applied Mathematics, 2012
The purpose of this paper is to develop a generalized matrix Riccati technique for the selfadjoint matrix Hamiltonian system U′ = A(t)U + B(t)V, V′ = C(t)U − A∗(t)V. By using the standard integral averaging technique and positive functionals, new oscillation and interval oscillation criteria are established for the system.
Wang, Nan, Meng, Fanwei
openaire   +4 more sources

Linear Quantum Entropy and Non-Hermitian Hamiltonians

open access: yesEntropy, 2016
We consider the description of open quantum systems with probability sinks (or sources) in terms of general non-Hermitian Hamiltonians. Within such a framework, we study novel possible definitions of the quantum linear entropy as an indicator of the flow
Alessandro Sergi, Paolo V. Giaquinta
doaj   +1 more source

Splitting Methods for Semi-Classical Hamiltonian Dynamics of Charge Transfer in Nonlinear Lattices

open access: yesMathematics, 2022
We propose two classes of symplecticity-preserving symmetric splitting methods for semi-classical Hamiltonian dynamics of charge transfer by intrinsic localized modes in nonlinear crystal lattice models.
Jānis Bajārs, Juan F. R. Archilla
doaj   +1 more source

Home - About - Disclaimer - Privacy