Rational limit cycles of Abel differential equations

Autor: José Luis Bravo, Luis Ángel Calderón, Ignacio Ojeda
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Electronic Journal of Qualitative Theory of Differential Equations, Vol 2023, Iss 47, Pp 1-13 (2023)
Druh dokumentu: article
ISSN: 1417-3875
96904186
DOI: 10.14232/ejqtde.2023.1.47
Popis: We study the number of rational limit cycles of the Abel equation $x'=A(t)x^3+B(t)x^2$, where $A(t)$ and $B(t)$ are real trigonometric polynomials. We show that this number is at most the degree of $A(t)$ plus one.
Databáze: Directory of Open Access Journals