Results 91 to 100 of about 6,081 (189)

Discrete asymptotic nets and W-congruences in Plucker line geometry

open access: yes, 2000
The asymptotic lattices and their transformations are studied within the line geometry approach. It is shown that the discrete asymptotic nets are represented by isotropic congruences in the Plucker quadric.
Adam Doliwa   +25 more
core   +1 more source

The Painlev\'e methods

open access: yes, 2002
This short review is an introduction to a great variety of methods, the collection of which is called the Painlev\'e analysis, intended at producing all kinds of exact (as opposed to perturbative) results on nonlinear equations, whether ordinary, partial,
Conte, Robert, Musette, Micheline
core   +1 more source

Darboux Transformations of Bispectral Quantum Integrable Systems

open access: yesLetters in Mathematical Physics, 1999
We present an approach to higher dimensional Darboux transformations suitable for application to quantum integrable systems and based on the bispectral property of partial differential operators. Specifically, working with the algebro-geometric definition of quantum integrability, we utilize the bispectral duality of quantum Hamiltonian systems to ...
Horozov, Emil, Kasman, Alex
openaire   +3 more sources

Non-integrability of the Armbruster-Guckenheimer-Kim quartic Hamiltonian through Morales-Ramis theory [PDF]

open access: yes, 2017
We show the non-integrability of the three-parameter Armburster-Guckenheimer-Kim quartic Hamiltonian using Morales-Ramis theory, with the exception of the three already known integrable cases.
Acosta-Humánez, P.   +2 more
core   +1 more source

On integrable reductions of two-dimensional Toda-type lattices

open access: yesPartial Differential Equations in Applied Mathematics
The article considers lattices of the two-dimensional Toda type, which can be interpreted as dressing chains for spatially two-dimensional generalizations of equations of the nonlinear Schrödinger type.
I.T. Habibullin, A.U. Sakieva
doaj   +1 more source

Relationships between Darboux Integrability and Limit Cycles for a Class of Able Equations [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2006
We consider the class of polynomial differential equation x&= , 2(,)(,)(,)nnmnmPxyPxyPxy++++2(,)(,)(,)nnmnmyQxyQxyQxy++&=++. For where and are homogeneous polynomials of degree i.
doaj  

SYMMETRIES AND LAX INTEGRABILITY OF THE GENERALIZED PROUDMAN-JOHNSON EQUATION

open access: yesНаучный вестник МГТУ ГА, 2017
We study local symmetries of the generalized Proudman-Johnson equation. Symmetries of a partial differential equation may be used to find its invariant solutions.
O. I. Morozov
doaj  

Integral transformation and Darboux transformation

open access: yes, 2009
We review Darboux-Crum transformation of Heun's differential equation. By rewriting an integral transformation of Heun's differential equation into a form of elliptic functions, we see that the integral representation is a generalization of Darboux-Crum transformation. We also consider conservation of monodromy with respect to the transformations.
openaire   +2 more sources

Darboux Approach to Mα-integration

open access: yesAbstract Proceedings International Scholars Conference, 2019
It is known that one can develop Riemann integration theory via Darboux approach. Themain idea in the Darboux approach is to define an integral using upper and lower Riemannsums. In this study we look at how -integration can be develop via Darboux approach.Here is a brief discussion of the methodology.
openaire   +1 more source

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