engleski

Formal classification of parabolic Dulac maps

The Dulac germs are germs analytic on (0, d), extendable to a standard quadratic domain and admittingpower-logarithmic asymptotic expansion. They appear as first return maps of hyperbolic polycycles in planarvector fields. We discuss the formal normal form and formal embedding in a flow for such maps. This is ajoint work with P. Mardešić, J.P.Rolin and V. Županović.

formal normal forms, transreds, Dulac mappings

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