scientific article; zbMATH DE number 6310558

zbMath1299.34142MaRDI QIDQ5165889

Xin Li, Li-Na Zhang, Jing Li

Publication date: 30 June 2014

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

zbMATH Keywords

hypernormal formnew grading functionnilpotent three-dimensional vector fieldsmultiple Lie brackets

Mathematics Subject Classification ID

Transformation and reduction of ordinary differential equations and systems, normal forms (34C20)

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