RATIONAL G-SURFACES

RATIONAL G-SURFACES
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有理 G 面

DOI:
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发表时间:
1981
期刊:
影响因子:
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通讯作者:
M. Gizatullin
M. Gizatullin
中科院分区:
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文献类型:
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作者:
M. Gizatullin

文献摘要

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在本文中,作者确定了完全有理曲面的结构,在该曲面上可以定义一个群作用,使得对于该群的每个元素,存在一个非零线性等价除子类,该除子类具有关于该元素不变的非负自交指数。如果排除这个作用通过线性代数群的代数作用分解的情况,则所有这样的曲面都是椭圆丛,并且群的作用保持纤维族。参考书目:11个标题。
In this paper the author determines the structure of complete rational surfaces on which one can define a group action in such a way that for each element of the group there exists a nonzero linear equivalence divisor class with nonnegative self-intersection index which is invariant with respect to this element. If one excludes the case when this action factors through an algebraic action of a linear algebraic group, then all such surfaces are elliptic bundles, and the action of the group preserves the family of fibers. Bibliography: 11 titles.