Global generation of adjoint bundles

Global generation of adjoint bundles
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全局生成伴随束

DOI:
10.1017/s0027763000005614
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发表时间:
1996
影响因子:
0.8
通讯作者:
H. Tsuji
H. Tsuji
中科院分区:
数学2区
文献类型:
--
作者:
H. Tsuji

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1988年,我. Reider证明了对光滑射影曲面X和X上的一个充裕线丛L,Kx + 3L是全局生成的,Kx + 4L是非常充裕的([12])。事实上,他的定理比这更强(详见[12])。近年来,关于有效基点自由度的研究取得了许多成果(参见:[1、3、8、13、14、15])。特别是J.P.Demailly证明了2KX + 12nnL对于光滑n重射影X和X上的一个充要线丛L是非常充要的。[2]将很好地概述这些最近的结果。这些工作的动机是T.藤田
In 1988, I. Reider proved that for a smooth projective surface X and an ample line bundle L on X, Kx + 3L is globally generated and Kx + 4L is very ample ([12]). In fact his theorem is much stronger than this (see [12] for detail). Recently a lot of results have been obtained about effective base point freeness (cf. [1, 3, 8, 13, 14, 15]). In particular J. P. Demailly proved that 2KX + 12nnL is very ample for a smooth projective n-fold X and an ample line bundle L on X. [2] will give a good overview for these recent results. The motivation of these works is the following conjecture posed by T. Fujita.