Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel

In this paper, we obtain some sufficient conditions for the existence of $2\pi$-periodic solutions of some semilinear equations at resonance where the kernel of the linear part has dimension $2n(n\ge 1)$. Our technique essentially bases on the Brouwer degree theory and Mawhin's coincidence degr...

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Main Authors: M. Shiwang, Zicheng Wang
Format: Article
Language:English
Published: University of Szeged 1999-01-01
Series:Electronic Journal of Qualitative Theory of Differential Equations
Online Access:http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1&paramtipus_ertek=publication&param_ertek=5
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author M. Shiwang
Zicheng Wang
author_facet M. Shiwang
Zicheng Wang
author_sort M. Shiwang
collection DOAJ
description In this paper, we obtain some sufficient conditions for the existence of $2\pi$-periodic solutions of some semilinear equations at resonance where the kernel of the linear part has dimension $2n(n\ge 1)$. Our technique essentially bases on the Brouwer degree theory and Mawhin's coincidence degree theory.
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spelling doaj.art-c4c7a936341d42258e1840108a41bd602023-05-09T07:52:56ZengUniversity of SzegedElectronic Journal of Qualitative Theory of Differential Equations1417-38751999-01-011999211310.14232/ejqtde.1999.1.25Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernelM. Shiwang0Zicheng Wang1Huazhong University of Science and Technology, Wuhan, P. R. ChinaHunan University, Changsha, P. R. ChinaIn this paper, we obtain some sufficient conditions for the existence of $2\pi$-periodic solutions of some semilinear equations at resonance where the kernel of the linear part has dimension $2n(n\ge 1)$. Our technique essentially bases on the Brouwer degree theory and Mawhin's coincidence degree theory.http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1&paramtipus_ertek=publication&param_ertek=5
spellingShingle M. Shiwang
Zicheng Wang
Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel
Electronic Journal of Qualitative Theory of Differential Equations
title Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel
title_full Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel
title_fullStr Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel
title_full_unstemmed Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel
title_short Periodic solutions of semilinear equations at resonance with a $2n$-dimensional kernel
title_sort periodic solutions of semilinear equations at resonance with a 2n dimensional kernel
url http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1&paramtipus_ertek=publication&param_ertek=5
work_keys_str_mv AT mshiwang periodicsolutionsofsemilinearequationsatresonancewitha2ndimensionalkernel
AT zichengwang periodicsolutionsofsemilinearequationsatresonancewitha2ndimensionalkernel