Resultats globals: 3 registres trobats en 0.05 segons.
Articles, 3 registres trobats
Articles 3 registres trobats  
1.
14 p, 337.6 KB Local Darboux first integrals of analytic differential systems / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Walcher, Sebastian (RWTH Aachen(Germany). Lehrstuhl A fur Mathematik) ; Zhang, Xiang (Shanghai Jiaotong University. Department of Mathematics)
In this paper we discuss local and formal Darboux first integrals of analytic differential systems, using the theory of Poincaré Dulac normal forms. We study the effect of local Darboux integrability on analytic normalization. [...]
2014 - 10.1016/j.bulsci.2013.09.007
Bulletin des Sciences Mathematiques, Vol. 138 (2014) , p. 71-88  
2.
11 p, 580.6 KB Local analytic first integrals of planar analytic differential systems / Colak, Ilker (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Valls, Clàudia 1973- (Universidade Técnica de Lisboa. Departamento de Matemática)
We study the existence of local analytic first integrals of a class of analytic differential systems in the plane, obtained from the Chua's system studied in [6, 7, 11]. The method used can be applied to other analytic differential systems.
2013 - 10.1016/j.physleta.2013.03.001
Physics Letters. A, Vol. 377 Núm. 15 (2013) , p. 1065-1069  
3.
15 p, 373.2 KB First integrals of local analytic differential systems / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Pantazi, Chara (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I) ; Walcher, Sebastian (RWTH Aachen(Germany). Lehrstuhl A fur Mathematik)
We investigate formal and analytic first integrals of local analytic ordinary differential equations near a stationary point. A natural approach is via the Poincaré-Dulac normal forms: If there exists a formal first integral for a system in normal form then it is also a first integral for the semisimple part of the linearization, which may be seen as "conserved" by the normal form. [...]
2012 - 10.1016/j.bulsci.2011.10.003
Bulletin des Sciences Mathematiques, Vol. 136 (2012) , p. 342-359  

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