Advanced Differential Equations and Dynamical Systems Open access Peer reviewed

Qualitative Planar Dynamics with Star Nodes and Homogeneous Nonlinearities: Beyond Hilbert’s 16th Problem

Begoña Alarcón, Sofia B. S. D. Castro, Isabel S. Labouriau

Matemática Contemporânea | Jul 22, 2026

Abstract

Abstract

Abstract This is a full study of the dynamics of polynomial planar vector fields whose linear part is a multiple of the identity and whose nonlinear part is a homogeneous polynomial of arbitrary degree $$n>1$$ . It extends previous work by other authors that was mainly concerned with the existence and number of limit cycles. The general results are also applied to two classes of examples where the nonlinearities have degrees 2 and 3, for which we provide a set of phase portraits.

Direct answer

What can I do from this paper page?

Use this page to scan "Qualitative Planar Dynamics with Star Nodes and Homogeneous Nonlinearities: Beyond Hilbert’s 16th Problem" quickly: start with the summary and abstract, then check the authors, source, topics, and related papers. From here, open Scollr to follow Advanced Differential Equations and Dynamical Systems research, save the paper, or map adjacent work.

Authors

Researchers on this paper

Begoña Alarcón

first | Universidade Federal Fluminense | ORCID 0000-0002-1790-3519

Sofia B. S. D. Castro

middle | Universidade do Porto | ORCID 0000-0001-9029-6893

Isabel S. Labouriau

last | Universidade do Porto | ORCID 0000-0003-1131-8746

Research areas

Follow related topics

Citation

BibTeX

@article{Alarcn2026Qualitative,
  title = {Qualitative Planar Dynamics with Star Nodes and Homogeneous Nonlinearities: Beyond Hilbert’s 16th Problem},
  author = {Begoña Alarcón and Sofia B. S. D. Castro and Isabel S. Labouriau},
  journal = {Matemática Contemporânea},
  year = {2026},
  doi = {10.1007/s44425-026-00056-5},
  url = {https://doi.org/10.1007/s44425-026-00056-5}
}

FAQ

Using this paper in a discovery workflow

How do I find related work for this paper?

Use the related papers and topic links on this page as starting points. In Scollr, you can also open the paper and build a literature map around its references, citing papers, and related work.

How can I keep up with new Advanced Differential Equations and Dynamical Systems research papers?

Follow Advanced Differential Equations and Dynamical Systems research in Scollr. New papers from the topic flow into a personalized feed, and you can save useful studies to revisit later.

Can I cite this paper from this page?

This page includes a static BibTeX block for Qualitative Planar Dynamics with Star Nodes and Homogeneous Nonlinearities: Beyond Hilbert’s 16th Problem. Always verify the DOI, source, and publication details against the publisher record before submitting a manuscript.

Follow this research in Scollr

Follow the topics and authors behind this paper, save useful studies, and build a literature map when you are ready to go deeper.

Get the app