Abstract
© 2015 World Scientific Publishing Company. In this paper, we present the global phase portraits in the Poincaré disc of the planar quadratic polynomial systems which admit invariant straight lines with total multiplicity two and Darboux invariants.
Original language | English |
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Article number | 1450018 |
Journal | Communications in Contemporary Mathematics |
Volume | 17 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Jan 2015 |
Keywords
- Darboux invariant
- Quadratic vector fields
- phase portraits