FANO MANIFOLDS AND BLOW-UPS OF LOW-DIMENSIONAL SUBVARIETIES

被引:2
|
作者
Chierici, Elena [1 ]
Occhetta, Gianluca [1 ]
机构
[1] Univ Trent, Dipartimento Matemat, I-38050 Povo, TN, Italy
关键词
Fano manifolds; rational curves; EXTREMAL RAYS; BUNDLES; FIVEFOLDS; INDEX; CONE;
D O I
10.4134/JKMS.2010.47.1.189
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We study Fano manifolds of pseudoindex greater than one and dimension greater than five, which are blow-ups of smooth varieties along smooth centers of dimension equal to the pseudoindex of the manifold. We obtain a classification of the possible cones of curves of these manifolds, and we prove that there is only one such manifold without a fiber type elementary contraction.
引用
收藏
页码:189 / 213
页数:25
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