\(QS11_{10}^{(2)}\)
Description
Phase Portrait
Topological Invariants
| TCSP | Fin Sep | Inf Sep |
|---|---|---|
| \(11\) | \(4420\) | \(4121\) |
Example
The quadratic differential system
\[\begin{cases} \dot{x} = ce + x^{2} - (999 \, x \, y)/5000 + (49 \, y^{2})/5000 \\ \dot{y} = (2/11 - dl) \, x^{2} + y + 2 \, (34461/110000 + dl) \, x \, y + (89/55000 - dl) \, y^{2} \end{cases}\]
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 \(BD40\) in {J. C. Artés}, Systems of class BD, {Preprint} (2026).