Weak focus, limit cycles, and bifurcations for bounded quadratic systems
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Publication:1343707
DOI10.1006/jdeq.1995.1012zbMath0823.34043OpenAlexW2030527508MaRDI QIDQ1343707
Chengzhi Li, Jaume Llibre, Zhi-Fen Zhang
Publication date: 30 January 1995
Published in: Journal of Differential Equations (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1006/jdeq.1995.1012
quadratic nonlinearitiesglobal phase portraittwo-dimensional autonomous ordinary differential equations
Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05) Bifurcation theory for ordinary differential equations (34C23) Nonlinear oscillations and coupled oscillators for ordinary differential equations (34C15)
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