Results 31 to 40 of about 33,546 (278)

Integrability and Pseudo-Linearizable Conditions in a Quasi-Analytic System

open access: yesAbstract and Applied Analysis, 2012
This paper deals with the problems of integrability and linearizable conditions at degenerate singular point in a class of quasianalytic septic polynomial differential system.
Feng Li, Yusen Wu
doaj   +1 more source

Long-time behavior of stochastic reaction–diffusion equation with multiplicative noise

open access: yesAdvances in Difference Equations, 2020
In this paper, we study the dynamical behavior of the solution for the stochastic reaction–diffusion equation with the nonlinearity satisfying the polynomial growth of arbitrary order p ≥ 2 $p\geq2$ and any space dimension N.
Jing Wang, Qiaozhen Ma, Tingting Liu
doaj   +1 more source

A note on the integrability of exceptional potentials via polynomial bi-homogeneous potentials

open access: yesBulletin of Computational Applied Mathematics, 2021
This paper is concerned with the polynomial integrability of the two-dimensional Hamiltonian systems associated to complex homogeneous polynomial potentials of degree k of type $V_{k,l}=\alpha (q_2-i q_1)^l (q_2+iq_1)^{k-l}$ with $\alpha$ in C and l=0 ...
Primitivo B. Acosta-Humánez   +2 more
doaj  

From the Birkhoff-Gustavson normalization to the Bertrand-Darboux integrability condition

open access: yes, 2000
The Bertrand-Darboux integrability condition for a certain class of perturbed harmonic oscillators is studied from the viewpoint of the Birkhoff-Gustavson(BG)-normalization: By solving an inverse problem of the BG-normalization on computer algebra, it is
Arnold V I   +17 more
core   +2 more sources

Integrability and level crossing manifolds in a quantum Hamiltonian system [PDF]

open access: yes, 1998
We consider a two-spin model, represented classically by a nonlinear autonomous Hamiltonian system with two degrees of freedom and a nontrivial integrability condition, and quantum mechanically by a real symmetric Hamiltonian matrix with blocks of ...
E. Magyari   +12 more
core   +3 more sources

Analytic reducibility of nondegenerate centers: Cherkas systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we study the center problem for polynomial differential systems and we prove that any center of an analytic differential system is analytically reducible.
Jaume Giné, Jaume Llibre
doaj   +1 more source

Geometry and integrability of quadratic systems with invariant hyperbolas

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
Let QSH be the family of non-degenerate planar quadratic differential systems possessing an invariant hyperbola. We study this class from the viewpoint of integrability.
Regilene Oliveira   +2 more
doaj   +1 more source

The non-polynomial conservation laws and integrability analysis of generalized Riemann type hydrodynamical equations

open access: yes, 2010
Based on the gradient-holonomic algorithm we analyze the integrability property of the generalized hydrodynamical Riemann type equation $%D_{t}^{N}u=0$ for arbitrary $N\in \mathbb{Z}_{+}.$ The infinite hierarchies of polynomial and non-polynomial ...
Popowicz, Ziemowit   +1 more
core   +1 more source

Open problems, questions, and challenges in finite-dimensional integrable systems [PDF]

open access: yes, 2018
The paper surveys open problems and questions related to different aspects of integrable systems with finitely many degrees of freedom. Many of the open problems were suggested by the participants of the conference “Finite-dimensional Integrable ...
Bolsinov, Alexey   +3 more
core   +5 more sources

On some orthogonal polynomial integrals [PDF]

open access: yesMathematics of Computation, 1980
The modified moments of the weight functions w ( x ) = x ρ ( 1 − x ) a ln ⁡ ( 1 / x ) w(x) = {x^\rho }{(1 - x ...
openaire   +2 more sources

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