Institutul de Matematică şi Informatică "Vladimir Andrunachievici"
Universitatea de Stat din MoldovaRO EN
Classification of planar quadratic differential systems with center of symmetry and multiple infinite singular point.
Authors: Mircea Lupan
Abstract
We classify the family of planar quadratic differential systems with a center of symmetry and two invariant straight lines according to the topology of their phase portraits. The case of the existence of at most two distinct infinite singular points is considered. For each of the classes obtained we give necessary and sufficient conditions in terms of algebraic invariants and comitants. A program was implemented for computer calculations.Department of Mathematics
"Gh. Asachi" Technical University of Iasi
11, Copou Bd, IASI-6600, ROMANIA
E-mail:
"Gh. Asachi" Technical University of Iasi
11, Copou Bd, IASI-6600, ROMANIA
E-mail:
Contents
- About one explicit-difference scheme for solving the plane problem for two-component medium.
- Classification of planar quadratic differential systems with center of symmetry and multiple infinite singular point.
- Cyclic planar random evolution with four directions.
- The commutative Moufang loops with minimum conditions for subloops II.
- On orders of elements in quasigroups.
- Flow induced by a constantly accelerating plate in a Maxwell fluid.
- Method and Studying Abel's Equation with the one known solution.
- Discrete optimal control problems on networks and dynamic games with p players.
- On I-radicals.
- On natural classes of R-modules in the language of ring R.
- Financial programming model and sustainable development.
- The Schauder basis in symmetrically normed ideals of operators.
