\(QS11_{3}^{(2)}\)
Description
Phase Portrait
Topological Invariants
| TCSP | Fin Sep | Inf Sep |
|---|---|---|
| \(11\) | \(4431\) | \(2211\) |
Example
The quadratic differential system
\[\begin{cases} \dot{x} = ce + x^{2} - 4 \, x \, y + 2 \, y^{2} \\ \dot{y} = cl \, x^{2} + y + 2 \, (-1/2 - cl) \, x \, y + cl \, y^{2} \end{cases}\]
has the following phase portrait done with P4. If you want, you may download the P4 file here.
The phase portrait appears in the following papers
- With name \(BD32\) in {J. C. Artés}, Systems of class BD, {Preprint} (2026).