Meromorphic first integrals - Resultados de la búsqueda - Depósito Digital de Documentos de la UAB

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Resultados globales: 4 registros encontrados en 0.02 segundos.
Artículos, Encontrados 4 registros

Artículos	Encontrados 4 registros

Meromorphic first integrals of analytic diffeomorphisms / Ferragut Amengual, Antoni Manel (Universidad Internacional de La Rioja) ; Gasull, Armengol (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Zhang, Xiang (Shanghai Jiao Tong University. School of Mathematical Sciences)
We give an upper bound for the number of functionally independent meromorphic first integrals that a discrete dynamical system generated by an analytic map f can have in a neighborhood of one of its fixed points. [...]
2023 - DOI (Digital Object Identifier)

10.1016/j.jmaa.2022.126796
Journal of mathematical analysis and applications, Vol. 519, Issue 1 (March 2023) , art. 126796

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6 p, 641.7 KB

Analytic integrability of a class of planar polynomial differential systems / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Valls, Clàudia 1973- (Universidade Técnica de Lisboa. Departamento de Matemática)
In this paper we find necessary and sufficient conditions in order that the differential systems of the form ˙x = xf(y), ˙y = g(y), with f and g polynomials, have a first integral which is analytic in the variable x and meromorphic in the variable y. [...]
2015 - DOI (Digital Object Identifier)

10.3934/dcdsb.2015.20.2657
Discrete and continuous dynamical systems. Series B, Vol. 20 Núm. 8 (2015) , p. 2657-2661

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25 p, 2.4 MB

Integrability and non-integrability of periodic non-autonomous Lyness recurrences / Cimà, Anna (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Gasull, Armengol (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Mañosa Fernández, Víctor 1971- (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III)
This paper studies non-autonomous Lyness type recurrences of the form xn+2 =(an +xn+1)/xn, where {an} is a k-periodic sequence of positive numbers with primitive period k. We show that for the cases k ∈ {1, 2, 3, 6} the behavior of the sequence {xn} is simple (integrable) while for the remaining cases satisfying this behavior can be much more complicated (chaotic). [...]
2013 - DOI (Digital Object Identifier)

10.1080/14689367.2013.821103
Dynamical Systems, Vol. 28 Núm. 4 (2013) , p. 518-538

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7 p, 259.7 KB

On the integrability of a three-dimensional cored galactic Hamiltonian / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Valls, Clàudia 1973- (Universidade Técnica de Lisboa. Departamento de Matemática)
We characterize when the three-dimensional cored galactic Hamiltonian system with Hamiltonian H =1/2(p2x + p2y +p2z/q)+s1 + x2 + y2 +z2/q, is completely meromorphically integrable when q ∈ [√ 0. 6, 1]. [...]
2015 - DOI (Digital Object Identifier)

10.1016/j.aml.2014.10.016
Applied mathematics letters, Vol. 41 (2015) , p. 23-27

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