On the rationality problem for quadric bundles
On the rationality problem for quadric bundles
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关于二次丛的合理性问题
DOI:
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发表时间:
2017
影响因子:
2.5
通讯作者:
Stefan Schreieder
中科院分区:
文献类型:
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作者:
Stefan Schreieder
We classify all positive integers n and r such that (stably) non-rational complex r-fold quadric bundles over rational n-folds exist. We show in particular that for any n and r, a wide class of smooth r-fold quadric bundles over projective n-space are not stably rational if r lies in the interval from $2^{n-1}-1$ to $2^{n}-2$. In our proofs we introduce a generalization of the specialization method of Voisin and Colliot-Th\'el\`ene--Pirutka which avoids universally $CH_0$-trivial resolutions of singularities.
影响因子:
0.9
作者:
Vial C
通讯作者:
Vial C
影响因子:
3.7
作者:
Hassett, Brendan;Pirutka, Alena;Tschinkel, Yuri
通讯作者:
Tschinkel, Yuri