On the uniqueness of limit cycles for generalized Liénard systems

In this article, the general Liénard system dxdt=ϕ(y)−F(x),dydt=−g(x)\left\{\begin{array}{l}\frac{{\rm{d}}x}{{\rm{d}}t}=\phi (y)-F\left(x),\\ \frac{{\rm{d}}y}{{\rm{d}}t}=-g\left(x)\end{array}\right. is studied. By using the Filippov transformation, combined with the careful estimation of divergence...

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Main Authors: Zhou Hui, Yuan Yueding
Format: Article
Language:English
Published: De Gruyter 2023-02-01
Series:Open Mathematics
Subjects:
Online Access:https://doi.org/10.1515/math-2022-0558
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author Zhou Hui
Yuan Yueding
author_facet Zhou Hui
Yuan Yueding
author_sort Zhou Hui
collection DOAJ
description In this article, the general Liénard system dxdt=ϕ(y)−F(x),dydt=−g(x)\left\{\begin{array}{l}\frac{{\rm{d}}x}{{\rm{d}}t}=\phi (y)-F\left(x),\\ \frac{{\rm{d}}y}{{\rm{d}}t}=-g\left(x)\end{array}\right. is studied. By using the Filippov transformation, combined with the careful estimation of divergence along the closed orbit, we prove the sufficient conditions for the uniqueness of limit cycles in this system. Our results extend almost all the related existing studies on the Liénard system.
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spelling doaj.art-697ed851730740529add6413fc277ec92023-03-06T10:26:16ZengDe GruyterOpen Mathematics2391-54552023-02-0121150051510.1515/math-2022-0558On the uniqueness of limit cycles for generalized Liénard systemsZhou Hui0Yuan Yueding1School of Mathematics and Computer Sciences, Yichun University, Yichun, Jiangxi 336000, P. R. ChinaSchool of Mathematics and Statistics, Hunan University of Finance and Economics, Changsha, Hunan 410205, P. R. ChinaIn this article, the general Liénard system dxdt=ϕ(y)−F(x),dydt=−g(x)\left\{\begin{array}{l}\frac{{\rm{d}}x}{{\rm{d}}t}=\phi (y)-F\left(x),\\ \frac{{\rm{d}}y}{{\rm{d}}t}=-g\left(x)\end{array}\right. is studied. By using the Filippov transformation, combined with the careful estimation of divergence along the closed orbit, we prove the sufficient conditions for the uniqueness of limit cycles in this system. Our results extend almost all the related existing studies on the Liénard system.https://doi.org/10.1515/math-2022-0558generalized liénard systemlimit cyclesuniqueness34a2534c0734c0534c25
spellingShingle Zhou Hui
Yuan Yueding
On the uniqueness of limit cycles for generalized Liénard systems
Open Mathematics
generalized liénard system
limit cycles
uniqueness
34a25
34c07
34c05
34c25
title On the uniqueness of limit cycles for generalized Liénard systems
title_full On the uniqueness of limit cycles for generalized Liénard systems
title_fullStr On the uniqueness of limit cycles for generalized Liénard systems
title_full_unstemmed On the uniqueness of limit cycles for generalized Liénard systems
title_short On the uniqueness of limit cycles for generalized Liénard systems
title_sort on the uniqueness of limit cycles for generalized lienard systems
topic generalized liénard system
limit cycles
uniqueness
34a25
34c07
34c05
34c25
url https://doi.org/10.1515/math-2022-0558
work_keys_str_mv AT zhouhui ontheuniquenessoflimitcyclesforgeneralizedlienardsystems
AT yuanyueding ontheuniquenessoflimitcyclesforgeneralizedlienardsystems