Curve arrangements, pencils, and Jacobian syzygies
Curve arrangements, pencils, and Jacobian syzygies
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曲线排列、铅笔和雅可比 syzygies
DOI:
10.1307/mmj/1490639821
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
A. Dimca
中科院分区:
文献类型:
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作者:
A. Dimca
Let $\mathcal C :f=0$ be a curve arrangement in the complex projective plane. If $\mathcal C$ contains a curve subarrangement consisting of at least three members in a pencil, then one obtains an explicit syzygy among the partial derivatives of the homogeneous polynomial $f$. In many cases this observation reduces the question about the freeness or the nearly freeness of $\mathcal C$ to an easy computation of Tjurina numbers. Some consequences for Terao's conjecture in the case of line arrangements are also discussed as well as the asphericity of some complements of geometrically constructed free curves. We also show that any line arrangement is a subarrangement of a free, $K(\pi,1)$ line arrangement.
DOI:
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发表时间:
2016
期刊:
影响因子:
--
作者:
Takuro Abe;Takuro Abe and Hiroaki Terao;Takuro Abe and Alexandru Dimca;Takuro Abe;Takuro Abe;Takuro Abe;Takuro Abe;阿部拓郎;Takuro Abe;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎;阿部拓郎
通讯作者:
阿部拓郎