Results 11 to 20 of about 852 (42)

The equivalence between the Hamiltonian and Lagrangian formulations for the parametrization‐invariant theories

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 30, Issue 1, Page 9-14, 2002., 2002
The link between the treatment of singular Lagrangians as field systems and the canonical Hamiltonian approach is studied. It is shown that the singular Lagrangians as field systems are always in exact agreement with the canonical approach for the parametrization invariant theories.
S. I. Muslih
wiley   +1 more source

On the compatible weakly nonlocal Poisson brackets of hydrodynamic type

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 32, Issue 10, Page 587-614, 2002., 2002
We consider the pairs of general weakly nonlocal Poisson brackets of hydrodynamic type (Ferapontov brackets) and the corresponding integrable hierarchies. We show that, under the requirement of the nondegeneracy of the corresponding “first” pseudo‐Riemannian metric g(0) νμ and also some nondegeneracy requirement for the nonlocal part, it is possible to
Andrei Ya. Maltsev
wiley   +1 more source

Fractional Analogous Models in Mechanics and Gravity Theories [PDF]

open access: yes, 2010
We briefly review our recent results on the geometry of nonholonomic manifolds and Lagrange--Finsler spaces and fractional calculus with Caputo derivatives. Such constructions are used for elaborating analogous models of fractional gravity and fractional
D Baleanu   +5 more
core   +1 more source

Compatible flat metrics

open access: yesJournal of Applied Mathematics, Volume 2, Issue 7, Page 337-370, 2002., 2002
We solve the problem of description of nonsingular pairs of compatible flat metrics for the general N‐component case. The integrable nonlinear partial differential equations describing all nonsingular pairs of compatible flat metrics (or, in other words, nonsingular flat pencils of metrics) are found and integrated.
Oleg I. Mokhov
wiley   +1 more source

Chains of KP, semi‐infinite 1‐Toda lattice hierarchy and Kontsevich integral

open access: yesJournal of Applied Mathematics, Volume 1, Issue 4, Page 175-193, 2001., 2001
There are well‐known constructions of integrable systems that are chains of infinitely many copies of the equations of the KP hierarchy “glued” together with some additional variables, for example, the modified KP hierarchy. Another interpretation of the latter, in terms of infinite matrices, is called the 1‐Toda lattice hierarchy.
L. A. Dickey
wiley   +1 more source

Gardner's deformations of the Boussinesq equations

open access: yes, 2006
Using the algebraic method of Gardner's deformations for completely integrable systems, we construct the recurrence relations for densities of the Hamiltonians for the Boussinesq and the Kaup-Boussinesq equations. By extending the Magri schemes for these
Karasu, Atalay, Kiselev, Arthemy V.
core   +1 more source

Soliton solution of the osmosis K(2, 2) equation

open access: yes, 2009
In this Letter, by using the bifurcation method of dynamical systems, we obtain the analytic expressions of soliton solution of the osmosis K(2, 2) equation.Comment: 8 ...
Biswas   +10 more
core   +1 more source

Integrability of Discrete Equations Modulo a Prime [PDF]

open access: yes, 2013
We apply the 'almost good reduction' (AGR) criterion, which has been introduced in our previous (arXiv:1206.4456 and arXiv:1209.0223), to several classes of discrete integrable equations.
Kanki, Masataka
core   +3 more sources

Complete integrability versus symmetry

open access: yes, 2012
The purpose of this article is to show that on an open and dense set, complete integrability implies the existence of ...
Abraham R.   +9 more
core   +1 more source

On the non-integrability of the Popowicz peakon system [PDF]

open access: yes, 2008
We consider a coupled system of Hamiltonian partial differential equations introduced by Popowicz, which has the appearance of a two-field coupling between the Camassa-Holm and Degasperis-Procesi equations.
Andrew N. W. Hone   +2 more
core   +3 more sources

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