IMI//BASM///

Authors: Nikolaev I. V., Vulpe Nicolae

Abstract

We study the quadratic systems of differential equations with a unique finite non-elementary singular point of the multiplicity two. For such systems we establish the invariant criteria, which allow us to answer whether or not a given system belongs to one of the 10 possible topological classes.

Institutul de Matematică Academia de Ştiinţe
str. Academiei 5, MD-2028 Chişinău, Moldova