Normal singularities and non-existence of plane curves
Normal singularities and non-existence of plane curves
批准号:
62540026
负责人:
YOSHIHARA Hisao
金额:
$1.09万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for General Scientific Research (C)
财政年份:
1987
资助国家:
日本
项目状态:
已结题
起止时间:
1987 至 1988
中文摘要
设C为复投影平面上的d次不可约曲线。我们假设每个奇点都是一个重数为2或3的单位点。取奇数的和。然后我们得到7 <6d^2 - 9d。此外,当d=3e时,我们研究了沿c分支的平面的三重覆盖面。
英文摘要
Let C be an irreducible curve of degree d in the complex projective plane. We assume that each singular point is a one place point with multiplicity 2 or 3. Let be the sum o the milnor numbers of the singularities. Then we obtained that 7 <6d^2 - 9d. moreover,when d=3e we studied the surface which is the triple covering of the plane branched along c.
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Hisao YOSHIHARA: Proceedings of the American Mathematical Society. 103. 737-740 (1988)
吉原久男:美国数学会会刊。
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Hisao YOSHIHARA: "Plane curves whose singular points are cusps and triple coverings" Manuscripta Mathematica.
Hisao YOSHIHARA:“奇点是尖点和三重覆盖的平面曲线”Manuscripta Mathematica。
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吉原久夫: 数学(日本数学会誌). 40. 269-271 (1988)
吉原久夫:数学(日本数学会杂志)40。269-271(1988)。
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Hisao YOSHIHARA: Manuscripta Mathematica.
吉原久男:数学手稿。
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共 9 条
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Hypersurfaces in the three dimensional projective spaces and its complement
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国内基金
海外基金
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批准号:51871142
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项目类别:面上项目
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资助金额:60.0万元
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批准年份:2018
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负责人:任维丽
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依托单位: