A system of degree four with an invariant triangle and at least three small amplitude limit cycles
We show the existence of a polynomial system of degree four having three real invariant straight lines forming a triangle with at least three small amplitude limit cycles in the interior. Also, we obtain the necessary and sufficient conditions for the critical point at the interior of the bounded...
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University of Szeged
2010-11-01
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Series: | Electronic Journal of Qualitative Theory of Differential Equations |
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doaj-c446ce87f43e4b329fc5a79165882aa12021-07-14T07:21:22ZengUniversity of SzegedElectronic Journal of Qualitative Theory of Differential Equations1417-38751417-38752010-11-012010691710.14232/ejqtde.2010.1.69529A system of degree four with an invariant triangle and at least three small amplitude limit cyclesZhenhai Liu0E. Sáez1I. Szántó2Guangxi University for Nationalities, Nanning, Guangxi, P. R. ChinaUniversidad Tecnica Federico Santa Maria, Valparaiso, ChileUniversidad Tecnica Federico Santa Maria, Valparaiso, ChileWe show the existence of a polynomial system of degree four having three real invariant straight lines forming a triangle with at least three small amplitude limit cycles in the interior. Also, we obtain the necessary and sufficient conditions for the critical point at the interior of the bounded region to be a center.http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1¶mtipus_ertek=publication¶m_ertek=529 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhenhai Liu E. Sáez I. Szántó |
spellingShingle |
Zhenhai Liu E. Sáez I. Szántó A system of degree four with an invariant triangle and at least three small amplitude limit cycles Electronic Journal of Qualitative Theory of Differential Equations |
author_facet |
Zhenhai Liu E. Sáez I. Szántó |
author_sort |
Zhenhai Liu |
title |
A system of degree four with an invariant triangle and at least three small amplitude limit cycles |
title_short |
A system of degree four with an invariant triangle and at least three small amplitude limit cycles |
title_full |
A system of degree four with an invariant triangle and at least three small amplitude limit cycles |
title_fullStr |
A system of degree four with an invariant triangle and at least three small amplitude limit cycles |
title_full_unstemmed |
A system of degree four with an invariant triangle and at least three small amplitude limit cycles |
title_sort |
system of degree four with an invariant triangle and at least three small amplitude limit cycles |
publisher |
University of Szeged |
series |
Electronic Journal of Qualitative Theory of Differential Equations |
issn |
1417-3875 1417-3875 |
publishDate |
2010-11-01 |
description |
We show the existence of a polynomial system of degree four having three real invariant straight lines forming a triangle with at least three small amplitude limit cycles in the interior. Also, we obtain the necessary and sufficient conditions for the critical point at the interior of the bounded region to be a center. |
url |
http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1¶mtipus_ertek=publication¶m_ertek=529 |
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