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arXiv 1111.6296math.AG
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有理尖点空间曲线的示性数

Characteristic numbers of rational cuspidal space curves

Dung Nguyen

摘要:

解决了具有尖点的有理空间曲线的示性数的计算问题,其中节点上可能有条件,也可能没有条件。以有效递归的形式给出了解。当周围射影空间的维数不超过5时,我们给出了显式公式。提供了许多数值例子。一个实现大多数递归的C++程序可根据要求提供

英文摘要:

We solve the problem of computing characteristic numbers of rational space curves with a cusp, where there may or may not be a condition on the node. The solution is given in the form of effective recursions. We give explicit formulas when the dimension of the ambient projective space is at most 5. Many numerical examples are provided. A C++ program implementing most of the recursions is available upon request

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