Filters
Low-order Hamiltonian operators having momentum
We describe all fifth-order Hamiltonian operators in one dependent and one independent variable that possess momentum, i.e., for which there exists a Hamiltonian associated with translation in the independent variable. Simi...
BA - Obecná matematika
- 2013 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
WDVV equations: symbolic computations of Hamiltonian operators
We describe software for symbolic computations that we developed in order to find Hamiltonian operators for Witten-Dijkgraaf-Verlinde-Verlinde (WDVV) equations, and verify their compatibility. The computation involves nonlocal (inte...
Pure mathematics
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
The Darboux coordinates for a new family of Hamiltonian operators and linearization of associated evolution equations
of compatible Hamiltonian operators of the form H((N,0)) = D(2)circle((1/u)circle D)(2n substitution that reduces any linear combination of these operators to an operator with constant coefficients and linearizes ...
BA - Obecná matematika
- 2011 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Integrability of S-deformable surfaces: Conservation laws, Hamiltonian structures and more
We present infinitely many nonlocal conservation laws, a pair of compatible local Hamiltonian structures and a recursion operator for the equations describing surfaces in three-dimensional space that admit nontrivial deformations wh...
BA - Obecná matematika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Continuum limit of the lattice quantum graph Hamiltonian
We consider the quantum graph Hamiltonian on the square lattice in Euclidean space, and we show that the spectrum of the Hamiltonian converges to the corresponding Schrodinger operator on the Euclidean space in the continuu...
Pure mathematics
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Friedrichs extension of operators defined by linear Hamiltonian systems on unbounded interval
In this paper we consider a linear operator on an unbounded interval associated with a matrix linear Hamiltonian system. We characterize its Friedrichs extension in terms of the recessive system of solutions at infinity. This genera...
BA - Obecná matematika
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Crypto-Unitary Forms of Quantum Evolution Operators
The description of quantum evolution using unitary operator requires that the underlying self-adjoint quantum Hamiltonian remains time-independent. In a way extending-dependent"charge" we propose and describe an extension of such an...
BE - Teoretická fyzika
- 2013 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Embedding of Linear Hamiltonian Systems on Small Time Scales
If a time scale $/T$ is in a sense small, then for any linear Hamiltonian dynamic system $x^{/Delta}=S(t)x$ on $/T$ its translation operator $e_{S(/cdot)(t,s)}$ is a restriction of a translation operator generated by a line...
BA - Obecná matematika
- 2006 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
A simple way of making a Hamiltonian system into a bi-Hamiltonian one
Given a Poisson structure (or, equivalently, a Hamiltonian operator) $P$, we show that its ie derivative $L_{tau} (P )$ along a vector field $tau$ defines$ and leads to a remarkably simple onstruction of bi-Hamiltonian dyna...
BA - Obecná matematika
- 2004 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Lagrangian and Hamiltonian structures for the constant astigmatism equation
In this paper we found a Lagrangian representation and corresponding Hamiltonian structure for the constant astigmatism equation. Utilizing this Hamiltonian flow of the third order. We also apply the recursion operator and ...
BA - Obecná matematika
- 2013 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
- 1 - 10 out of 70 064