Results 1 to 10 of about 172 (142)

Liouville Integrability in a Four-Dimensional Model of the Visual Cortex [PDF]

open access: yesJournal of Imaging, 2021
We consider a natural extension of the Petitot–Citti–Sarti model of the primary visual cortex. In the extended model, the curvature of contours is taken into account.
Ivan Galyaev, Alexey Mashtakov
doaj   +2 more sources

Higher-Order Matrix Spectral Problems and Their Integrable Hamiltonian Hierarchies

open access: yesMathematics, 2023
Starting from a kind of higher-order matrix spectral problems, we generate integrable Hamiltonian hierarchies through the zero-curvature formulation.
Shou-Ting Chen, Wen-Xiu Ma
doaj   +1 more source

Liouville Correspondences between Integrable Hierarchies [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2017
In this paper, we study explicit correspondences between the integrable Novikov and Sawada-Kotera hierarchies, and between the Degasperis-Procesi and Kaup-Kupershmidt hierarchies. We show how a pair of Liouville transformations between the isospectral problems of the Novikov and Sawada-Kotera equations, and the isospectral problems of the Degasperis ...
Kang, J., Liu, X., Olver, P.J., Qu, C.
openaire   +4 more sources

Liouville correspondences between multicomponent integrable hierarchies [PDF]

open access: yesTheoretical and Mathematical Physics, 2020
In this paper, we establish Liouville correspondences for the integrable two-component Camassa-Holm hierarchy, the two-component Novikov (Geng-Xue) hierarchy, and the two-component dual dispersive water wave hierarchy by means of the related Liouville transformations. This extends previous results on the scalar Camassa-Holm and KdV hierarchies, and the
Kang, Jing   +3 more
openaire   +3 more sources

Bifurcations of Liouville tori of coupled sextic anharmonic oscillators

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
In the current paper, the problem of sextic anharmonic oscillators is investigated. There are three integrable cases of this problem. Emphasis is placed on two integrable cases, and a full description of each one is provided.
Fawzy M El-Sabaa   +3 more
doaj   +1 more source

Explicit solutions of rational integrable differential-difference equations

open access: yesPartial Differential Equations in Applied Mathematics, 2022
The rational integrable differential-difference equations are proposed from a different discrete spectral problem. We proved the Liouville integrability of rational integrable differential-difference equations by deriving its bi-Hamiltonian structures ...
Qiulan Zhao, Muhammad Arham Amin
doaj   +1 more source

Strongly formal Weierstrass non-integrability for polynomial differential systems in $\mathbb{C}^2$

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
Recently it has been given a criterion for determining the weakly formal Weierstrass non-integrability of polynomial differential systems in $\mathbb{C}^2$.
Jaume Giné, Jaume Llibre
doaj   +1 more source

Liouville integrability of classical Calogero–Moser models [PDF]

open access: yesPhysics Letters A, 2001
8 pages, LaTeX2e, no ...
Khastgir, S. P., Sasaki, R.
openaire   +2 more sources

ON THE LIOUVILLE INTERGRABILITY OF LOTKA-VOLTERRA SYSTEMS

open access: yesFrontiers in Physics, 2014
This paper is a review on some recent works on the Liouville integrability of a large class of Lotka-Volterra ...
Pantelis eDamianou, Fani ePetalidou
doaj   +1 more source

From quantum groups to Liouville and dilaton quantum gravity

open access: yesJournal of High Energy Physics, 2022
We investigate the underlying quantum group symmetry of 2d Liouville and dilaton gravity models, both consolidating known results and extending them to the cases with N $$ \mathcal{N} $$ = 1 supersymmetry.
Yale Fan, Thomas G. Mertens
doaj   +1 more source

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