Institutul de Matematică şi Informatică "Vladimir Andrunachievici"
Universitatea de Stat din MoldovaRO EN
Quadratic systems with dicritical points. (Russian)
Authors: Vulpe Nicolae, Lupan M. N.
Abstract
The notion of a dicritical (not necessarily singular) point of a quadratic differential system is introduced. As particular cases, it comprises symmetry point of the corresponding integral curves, dicritical nodal singular point and homogeneity point (i.e., such point that the system becomes homogeneous after shifting the point to the origin). Affine-invariant coefficient conditions for determining the number of such points and discerning the phase portraits of quadratic systems with a homogeneity point are given.Institutul de Matematică al Academiei de Ştiinţe a Moldovei
str. Academiei 5, Chişinău MD-2028, Moldova
str. Academiei 5, Chişinău MD-2028, Moldova
Contents
- Finite projection and dual of birth-death processes. (English)
- Behaviour of the stresses near plane wedge-shaped defects. (English)
- New classes of cubic systems with seven limit cycles. (English)
- Note on the stability of non-selfadjoint operator-difference schemes. (English)
- On exact solutions of the heat equation with a nonlinear source-sink of a special type. (Russian)
- About separable self-orthogonal $n$-operations. (English)
- Properties of topological modules free in some classes. I. (English)
- Quadratic systems with dicritical points. (Russian)
- On the structure of partitions of a space into polyhedral bodies. (Russian)
- Solvability of a model Cauchy problem for parabolic systems in spaces of generalized functions. (Russian)
