Varieties that are not stably rational, zero-cycles and unramified cohomology
Varieties that are not stably rational,
zero-cycles and unramified cohomology
复制标题
不稳定有理数、零环和无分支上同调的簇
DOI:
10.1090/pspum/097.2/01713
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Alena Pirutka
中科院分区:
文献类型:
--
作者:
Alena Pirutka
This is a survey of recent examples of varieties that are not stably rational. We review the specialization method based on properties of the Chow group of zero-cycles used in these examples and explain the point of view of unramified cohomology for the construction of nontrivial stable invariants of the special fiber. In particular, we find an explicit formula for the Brauer group of fourfolds fibered in quadrics of dimension two over a rational surface.
影响因子:
0.9
作者:
Vial C
通讯作者:
Vial C