BIRATIONAL RIGIDITY OF ORBIFOLD DEGREE 2 DEL PEZZO FIBRATIONS
BIRATIONAL RIGIDITY OF ORBIFOLD DEGREE 2 DEL PEZZO FIBRATIONS
复制标题
ORBIFOLD DEGREE 2 DEL PEZZO 纤维的双系刚性
DOI:
10.1017/nmj.2022.13
复制
发表时间:
2022
影响因子:
0.8
通讯作者:
ABBAN H
中科院分区:
文献类型:
--
作者:
ABBAN H
Varieties fibered into del Pezzo surfaces form a class of possible outputs of the minimal model program. It is known that del Pezzo fibrations of degrees and over the projective line with smooth total space satisfying the so-called -condition are birationally rigid: their Mori fiber space structure is unique. This implies that they are not birational to any Fano varieties, conic bundles, or other del Pezzo fibrations. In particular, they are irrational. The families of del Pezzo fibrations with smooth total space of degree are rather special, as for most families a general del Pezzo fibration has the simplest orbifold singularities. We prove that orbifold del Pezzo fibrations of degree over the projective line satisfying explicit generality conditions as well as a generalized -condition are birationally rigid.
登录
查看更多内容
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
A. Pukhlikov
通讯作者:
A. Pukhlikov
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
I V Sobolev
通讯作者:
I V Sobolev
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
V. A. Iskovskikh
通讯作者:
V. A. Iskovskikh
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
V. G. Sarkisov
通讯作者:
V. G. Sarkisov
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
I. Shafarevich;A. N. Parshin
通讯作者:
A. N. Parshin