Resultados globales: 3 registros encontrados en 0.03 segundos.
Artículos, Encontrados 3 registros
Artículos Encontrados 3 registros  
1.
20 p, 414.4 KB Center problem for systems with two monomial nonlinearities / Gasull, Armengol (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Giné, Jaume (Universitat de Lleida. Departament de Matemàtica) ; Torregrosa, Joan (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
We study the center problem for planar systems with a linear center at the origin that in complex coordinates have a nonlinearity formed by the sum of two monomials. Our first result lists several centers inside this family. [...]
2016 - 10.3934/cpaa.2016.15.577
Communications on pure & applied analysis, Vol. 15 Núm. 2 (2016) , p. 577-598  
2.
20 p, 395.4 KB On nonsmooth perturbations of nondegenerate planar centers / Novaes, Douglas D. (Universidade Estadual de Campinas (Brasil). Departamento de Matemática)
We provide sufficient conditions for the existence of limit cycles of non-smooth perturbed planar centers, when the set of discontinuity is an algebraic variety. It is introduced a mechanism which allows us to deal with such system, even in higher dimension. [...]
2014 - 10.5565/PUBLMAT_Extra14_20
Publicacions matemàtiques, Vol. Extra (2014) , p. 395-420
2 documentos
3.
19 p, 771.0 KB Centers and isochronous centers for generalized quintic systems / Giné, Jaume (Universitat de Lleida. Departament de Matemàtica) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Valls, Clàudia 1973- (Universidade Técnica de Lisboa. Departamento de Matemática)
In this paper we classify the centers and the isochronous centers of certain polynomial differential systems in R2 of degree d ≥ 5 odd that incomplex notation can be written as z˙ = (λ + i)z + (zz¯)d−52 (Az5 + Bz4z¯ + Cz3z¯2 + Dz2z¯3 + Ezz¯4 + Fz¯5),where λ ∈ R and A, B, C, D, E, F ∈ C. [...]
2015 - 10.1016/j.cam.2014.11.007
Journal of computational and applied mathematics, Vol. 279 (2015) , p. 173-186  

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