\(QS7_{4}^{(1I)}\)
Description
Phase Portrait
Topological Invariants
| TCSP | Fin Sep | Inf Sep |
|---|---|---|
| \(7\) | \(4311\) | \(3121\) |
Example
The quadratic differential system
\[\begin{cases} \dot{x} = ? \\ \dot{y} = ? \end{cases}\]
This phase portrait has already been proved not to exist. Anyway, if you have an example of this please report to contact.
The phase portrait appears in the following papers
- With name \(Fig 5.67 U^1_{I,7}\) in {J. C. Artés, J. Llibre and A. C. Rezende}, Structurally unstable quadratic vector fields of codimension one, Birkhäuser/Springer, Cham, 2018, vi+267 pp.
Comments
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