Applications of principal isogenies to constructions of ball quotient surfaces

Applications of principal isogenies to constructions of ball quotient surfaces
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主要同源性在球商曲面构造中的应用

DOI:
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发表时间:
2011
期刊:
arXiv: Algebraic Geometry
影响因子:
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通讯作者:
A. Kasparian
A. Kasparian
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作者:
A. Kasparian

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设$(({\mathbb B} /\Gamma_1 ',T(1))$是具有交换极小模型$(A_1,D(1))$的无挠环面紧化.一个任意的主元是$\mu_a:A_2 \rightarrow A_1$,$a \in {\mathbb C}$拉回$(A_1,D(1))$到无挠环紧化$(({\mathbb B} /\Gamma_2 <$',D(2))$的交换极小模型$(A_2,D(2))$.本文利用交换球商模型的等距拉回,构造了互非双有理余交换无挠Galois覆盖的无穷级数。(({\mathbb B} / \Gamma_n\“,T(n))$的球商紧化$\bar{{\mathbb B} / \Gamma_H}$的科代拉维数$\kappa(\bar{{\mathbb B} / \Gamma_H})\leq 0$。它还提供了某些${\mathbb B} / \Gamma_H$的双有理模型的无穷级数。
Let $(({\mathbb B} / \Gamma_1)', T(1))$ be \'a torsion free toroidal compactification with abelian minimal model $(A_1, D(1))$. An arbitrary principal isogeny $\mu_a : A_2 \rightarrow A_1$, $a \in {\mathbb C}$ pulls-back $(A_1, D(1))$ to the abelian minimal model $(A_2, D(2))$ of a torsion free toroidal compactification $(({\mathbb B} / \Gamma_2)', D(2))$. The present work makes use of the isogeny pull-backs of abelian ball quotient models, towards the construction of infinite series of mutually non-birational co-abelian torsion free Galois covers $(({\mathbb B} / \Gamma_n)', T(n))$ of a ball quotient compactification $\bar{{\mathbb B} / \Gamma_H}$ of Kodaira dimension $\kappa (\bar{{\mathbb B} / \Gamma_H}) \leq 0$. It provides also infinite series of birational models of certain ${\mathbb B} / \Gamma_H$.
计算 K3 曲面的恩里克商
DOI: --
发表时间: 2007
期刊: RIMS-preprint 1609
影响因子: --
作者:
N.Katoh;S.Tanigawa;H.Ohashi
通讯作者: H.Ohashi