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·数学·一类三中心Ham订ton扰动系统的分枝与相图…………………………李昆垣刘天一(1)一类三次微分系统的有限远奇点分析………………………………………………区月华(11)关于具有非负Ricci曲率的紧致Riemann流形第一特征值的一个注记…………李明(17)一类奇异拟微分算子代数
· Mathematics · Branches and Phase Diagrams for a Class of Three-Center Hammington Perturbation Systems .............................. Li Kunyuan Liu Tianyi (1) Finite-distance Singularity Analysis of a Class of Cubic Differential Systems .................. (11) A Note on the First Eigenvalue of a Compact Riemannian Manifold with Nonnegative Ricci Curvature Li Ming (17) A Kind of Singularity Quasi Differential Operator Algebra