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arXiv 2104.07968math.AG
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algebraic varieties上的零圈群

Zero-cycle groups on algebraic varieties

Federico Binda, Amalendu Krishna

摘要:

我们比较了域上拟射影簇上的各类0-圈。作为应用,我们证明了对于某些奇异投射簇,Levine-Weibel Chow群的0-圈与相应的Friedlander-Voevodsky动机上同调是一致的.我们还证明了在正特征的代数闭域上,模在光滑射影簇上的0-圈关于一个简化除子的Chow群与该除子的补的Suslin同调一致.证明了Saito和Sato有限性定理在$p$ -adic域上的Chow群0-圈上的几个推广。我们还利用这些结果推导出Suslin同调的挠率定理,将Bloch的一个结果推广到开簇。

英文摘要:

We compare various groups of 0-cycles on quasi-projective varieties over a field. As applications, we show that for certain singular projective varieties, the Levine-Weibel Chow group of 0-cycles coincides with the corresponding Friedlander-Voevodsky motivic cohomology. We also show that over an algebraically closed field of positive characteristic, the Chow group of 0-cycles with modulus on a smooth projective variety with respect to a reduced divisor coincides with the Suslin homology of the complement of the divisor. We prove several generalizations of the finiteness theorem of Saito and Sato for the Chow group of 0-cycles over $p$-adic fields. We also use these results to deduce a torsion theorem for Suslin homology which extends a result of Bloch to open varieties.

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