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arXiv 0707.0372math.AG
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正则扩张的调节子是挠的:光滑divisor情形

Regulators of canonical extensions are torsion: the smooth divisor case

Jaya N. Iyer, Carlos T. Simpson

摘要:

本文证明了Reznikov定理的一个推广,即光滑复射影簇上平坦丛的Chern-Simons类,特别是DeligneChern类(以$>1$为度)是挠的.考虑光滑拟射影簇在无穷远处具有不可约光滑因子的情形。定义了无穷远点具有单幂单调性的平坦向量丛的Deligne标准扩张的Chern-Simons类,提升了Deligne Chern类,并证明了这些类是挠类.

英文摘要:

In this paper, we prove a generalization of Reznikov's theorem which says that the Chern-Simons classes and in particular the Deligne Chern classes (in degrees $>1$) are torsion, of a flat bundle on a smooth complex projective variety. We consider the case of a smooth quasi--projective variety with an irreducible smooth divisor at infinity. We define the Chern-Simons classes of Deligne's canonical extension of a flat vector bundle with unipotent monodromy at infinity, which lift the Deligne Chern classes and prove that these classes are torsion.

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