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北京大学 [13]

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	PERIODIC ORBIT OF THE PENDULUM WITH A SMALL NONLINEAR DAMPING 期刊论文 JOURNAL OF APPLIED ANALYSIS AND COMPUTATION, 2018, 卷号: 8, 页码: 649-654 作者: Cheng, Minhua; Li, Chengzhi 收藏 \| 浏览/下载：3/0 \| 提交时间：2019/11/19 Periodic orbits bifurcation Abelian integrals pendulum with a nonlinear damping
	Limit cycles for 3-monomial differential equations 其他 2015-01-01 Gasull, Armengol; Li, Chengzhi; Torregrosa, Joan 收藏 \| 浏览/下载：4/0 \| 提交时间：2017/12/03 Limit cycles Homogeneous nonlinearities Abelian integrals Bifurcations Z(q)-equivariant symmetry POLYNOMIAL VECTOR-FIELDS HILBERTS 16TH PROBLEM PERIODIC-ORBITS BIFURCATION RESONANCE SYMMETRY SYSTEMS ORDER-4
	On the number of zeros of Abelian integrals for a kind of quartic Hamiltonians 期刊论文 APPLIED MATHEMATICS AND COMPUTATION, 2014, 卷号: 228, 页码: 329-335 作者: Wu, Juanjuan; Zhang, Yongkang; Li, Cuiping 收藏 \| 浏览/下载：4/0 \| 提交时间：2020/01/06 Weakened Hilbert 16th problem Abelian integrals Quartic Hamiltonian Poincare bifurcation
	Limit cycles appearing from the perturbation of a system with a multiple line of critical points 其他 2012-01-01 Gasull, Armengol; Li, Chengzhi; Torregrosa, Joan 收藏 \| 浏览/下载：2/0 \| 提交时间：2015/11/12 Limit cycles Weak Hilbert&apos Abelian integrals Bifurcation of periodic orbits GLOBAL BIFURCATION FAMILY s 16th problem
	CYCLICITY OF SEVERAL QUADRATIC REVERSIBLE SYSTEMS WITH CENTER OF GENUS ONE 其他 2011-01-01 Chen, Long; Ma, Xianzhong; Zhang, Gemeng; Li, Chengzhi 收藏 \| 浏览/下载：6/0 \| 提交时间：2015/11/16 Cyclicity of period annulus Quadratic reversible center of genus one Abelian integrals Chebyshev property
	CYCLICITY OF SEVERAL QUADRATIC REVERSIBLE SYSTEMS WITH CENTER OF GENUS ONE 期刊论文 JOURNAL OF APPLIED ANALYSIS AND COMPUTATION, 2011, 卷号: 1, 期号: [db:dc_citation_issue], 页码: 439-447 作者: Chen, Long; Ma, Xianzhong; Zhang, Gemeng; Li, Chengzhi 收藏 \| 浏览/下载：1/0 \| 提交时间：2019/12/10 Abelian integrals Cyclicity of period annulus Chebyshev property Quadratic reversible center of genus one
	ABELIAN INTEGRALS FOR THE ONE-PARAMETER BOGDANOV-TAKENS SYSTEM 期刊论文 INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, 2011, 卷号: 21, 页码: 2723-2727 作者: Zhang Yongkang; Li Baoyi; Li Cuiping 收藏 \| 浏览/下载：3/0 \| 提交时间：2020/01/06 Abelian integrals Bogdanov-Takens system Hilbert's 16th problem
	Limit Cycles Bifurcating from the Period Annulus of Quasi-Homogeneous Centers 其他 2009-01-01 Li, Weigu; Llibre, Jaume; Yang, Jiazhong; Zhang, Zhifen 收藏 \| 浏览/下载：2/0 \| 提交时间：2015/11/10 Homogeneous centers Quasi-homogeneous centers Limit cycles QUADRATIC HAMILTONIAN-SYSTEMS COMPLETE ABELIAN-INTEGRALS HILBERTS 16TH PROBLEM VECTOR-FIELDS POLYNOMIAL PERTURBATIONS EXPONENTIAL ESTIMATE ISOCHRONOUS CENTERS ELLIPTIC INTEGRALS LINEAR ESTIMATE ALMOST-ALL
	QUADRATIC PERTURBATIONS OF A CLASS OF QUADRATIC REVERSIBLE SYSTEMS WITH TWO CENTERS 其他 2009-01-01 Coll, Bartomeu; Li, Chengzhi; Prohens, Rafel 收藏 \| 浏览/下载：3/0 \| 提交时间：2015/11/16 Quadratic Reversible system Abelian integral limit cycle UNBOUNDED HETEROCLINIC LOOPS LIMIT-CYCLES HAMILTONIAN-SYSTEMS HILBERT PROBLEM INTEGRALS N=2
	The Abelian Integrals of a Class of Non-Hamiltonian System under Cubic Perturbations 会议论文 6th Conference of Biomathematics, JUL 25-28, 2008 作者: Qi, Xiaomei; Chen, Wencheng 收藏 \| 浏览/下载：2/0 \| 提交时间：2019/12/31 non-Hamiltonian system Weakened Hilbert 16th problem the Abelian integrals cubic perturbations

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