Study of non-existence of limit cycle around a weak focus of order two or three for quadratic systems

zbMath0733.58036MaRDI QIDQ809445

Pingguang Zhang

Publication date: 1990

Published in: Chinese Science Bulletin (Search for Journal in Brave)

zbMATH Keywords

quadratic systemnonexistence of a limit cycle

Mathematics Subject Classification ID

Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05) Bifurcations of limit cycles and periodic orbits in dynamical systems (37G15)

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