Function Field Theory of Plane Curves by Dual Curves
Function Field Theory of Plane Curves by Dual Curves
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基于对偶曲线的平面曲线函数场论
DOI:
10.1006/jabr.2000.8675
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发表时间:
2001
影响因子:
0.9
通讯作者:
Hisao Yoshihara
中科院分区:
文献类型:
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作者:
Hisao Yoshihara
We study the structure of function fields of plane curves following our method developed previously (K. Miura and H. Yoshihara, 2000, J. Algebra226, 283–294). Let K be the function field of a smooth plane curve C of degree d ( ≥ 4) and let KP be a maximal rational subfield of K for P ∈ P2. We study the field extension K/KP from a geometrical viewpoint. Especially, we give a sufficient condition that the Galois group of the Galois closure of K/KP becomes a full symmetric group.