The Chow ring of a classifying space

The Chow ring of a classifying space
复制标题

分类空间的 Chow 环

DOI:
10.1017/cbo9781139059480.003
复制
发表时间:
1998
期刊:
arXiv: Algebraic Geometry
影响因子:
--
通讯作者:
B. Totaro
B. Totaro
中科院分区:
--
文献类型:
--
作者:
B. Totaro

文献摘要

被引文献

相似文献

定义了线性代数群的分类空间的Chow环。在我们可以计算它的所有例子中,例如对称群和正交群,它同构于分类空间的复配边环的自然商,拓扑不变量。我们应用这个得到扭转信息的周群的品种定义为有限群的同分异构体。这推广了Atiyah和Hirzebruch使用这些变种来给出具有整数系数的霍奇猜想的反例。
We define the Chow ring of the classifying space of a linear algebraic group. In all the examples where we can compute it, such as the symmetric groups and the orthogonal groups, it is isomorphic to a natural quotient of the complex cobordism ring of the classifying space, a topological invariant. We apply this to get torsion information on the Chow groups of varieties defined as quotients by finite groups. This generalizes Atiyah and Hirzebruch's use of such varieties to give counterexamples to the Hodge conjecture with integer coefficients.