Firstly, by computing the eigenvalues of linear approximation system, a critical condition which ensures odd point o is local center is obtained.
首先通过计算线性近似系统特征值的方法，给出了奇点o为局部中心点的判定条件。
Firstly, by computing the eigenvalues of linear approximation system, a critical condition which ensures odd point o is local center is obtained.
首先通过计算线性近似系统特征值的方法，给出了奇点o为局部中心点的判定条件。
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