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arXiv math/0602517math.AG
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某些有理projective varieties上的内生Lawson同调群

Infinitely generated Lawson homology groups on some rational projective varieties

Wenchuan Hu

摘要:

我们构造了具有如下性质的四维有理投射簇:某些用Q张量的Lawson同调群是无限维Q-向量空间.更一般地说,每对整数p和k,其中\geq 0,p>0,我们找到一个投射簇Y,使得L_ pH_{2p+k}(Y)是无限生成的。我们还构造了两个具有相同同胚类型但不同Lawson同调群的奇异有理射影三维簇Y和Y',特别是L_1H_3(Y)与L_1H_3(Y')即使在挠下也不同构.

英文摘要:

We construct rational projective 4-dimensional varieties with the property that certain Lawson homology groups tensored with Q are infinite dimensional Q-vector spaces. More generally, each pair of integers p and k, with k\geq 0, p>0, we find a projective variety Y, such that L_pH_{2p+k}(Y) is infinitely generated. We also construct two singular rational projective 3-dimensional varieties Y and Y' with the same homeomorphism type but different Lawson homology groups, specifically L_1H_3(Y) is not isomorphic to L_1H_3(Y')even up to torsion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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