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arXiv math/0412117math.AG
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特殊三重Hilbert格式的维数

The dimension of the Hilbert scheme of special threefolds

GianMario Besana, Maria Lucia Fania

摘要:

研究余维为3或3以上的射影3-折叠的Hilbert格式,这些3-折叠是在射影平面上或光滑二次曲面上的线性涡卷,或在射影直线上的二次或三次纤维化.所有已知的这种三倍的程度从7至11示出对应于光滑点的不可约的组成部分,其希尔伯特计划,其尺寸计算。研究了与好行列式子格式的轨迹的关系

英文摘要:

The Hilbert scheme of projective 3-folds of codimension 3 or more that are linear scrolls over the projective plane or over a smooth quadric surface or that are quadric or cubic fibrations over the projective line is studied. All known such threefolds of degree from 7 to 11 are shown to correspond to smooth points of an irreducible component of their Hilbert scheme, whose dimension is computed. A relationship with the locus of good determinantal subschemes is investigated

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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