A blow-up method to prove formal integrability for some planar differential systems
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In this work we provide an effective method to prove the formal integrability of the resonant saddles. The method is based on the use of a blow-up and the resolution of a recurrence differential equation using induction. Using the method some open integrability problems for certain resonant saddles are solved.
Is part ofJournal Of Applied Analysis And Computation, 2018, vol. 8, núm. 6, p. 1833-1850
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