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scientific article; zbMATH DE number 4127637 - MaRDI portal

scientific article; zbMATH DE number 4127637

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Publication:4207037

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zbMath0688.34015MaRDI QIDQ4207037

Pingguang Zhang

Publication date: 1989

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

center focus homoclinic loop weak saddle

Mathematics Subject Classification ID

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

Related Items (1)

Characterization of the finite weak singularities of quadratic systems via invariant theory

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