scientific article

zbMATH Open0647.34024MaRDI QIDQ3791480

Xinan Yang

Publication date: 1988

Title of this publication is not available (Why is that?)

zbMATH Keywords

limit cyclesweak focusDulac functionbounded quadratic system

Mathematics Subject Classification ID

Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05)

Related Items (3)

Weak focus, limit cycles, and bifurcations for bounded quadratic systems ⋮ Quadratic systems with a weak focus ⋮ Quadratic systems with a weak focus and a strong focus

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