Geodesic
Commutators and linearizations of isochronous centers
Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 11 (2000) no. 2, pp. 81-98

Voir la notice de l'article provenant de la source Biblioteca Digitale Italiana di Matematica

We study isochronous centers of some classes of plane differential systems. We consider systems with constant angular speed, both with homogeneous and nonhomogenous nonlinearities. We show how to construct linearizations and first integrals of such systems, if a commutator is known. Commutators are found for some classes of systems. The results obtained are used to prove the isochronicity of some classes of centers, and to find first integrals for a class of Liénard equations with isochronous centers. 
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     author = {Mazzi, Luisa and Sabatini, Marco},
     title = {Commutators and linearizations of isochronous centers},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {81--98},
     publisher = {mathdoc},
     volume = {Ser. 9, 11},
     number = {2},
     year = {2000},
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     mrnumber = {MR1797513},
     language = {en},
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Mazzi, Luisa; Sabatini, Marco. Commutators and linearizations of isochronous centers. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 11 (2000) no. 2, pp. 81-98. http://geodesic.mathdoc.fr/item/RLIN_2000_9_11_2_a1/