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arXiv 1210.7824math.GTmath.SG
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Lefschetz纤维化与Torelli群

Lefschetz fibrations and Torelli groups

R. Inanc Baykur, Dan Margalit

摘要:

对g > 2和h > 1,我们构造了(1)单值点在Torelli群中的亏格h曲面上的纤维和不可分解的相对极小亏格g-Lefschetz纤维化,(2)单值点在Torelli群中的亏格h曲面上的纤维和不可分解的亏格g曲面丛(3)亏格h曲面上的无穷多个亏格g-Lefschetz纤维化不是全纯曲面的纤维和.

英文摘要:

For each g > 2 and h > 1, we explicitly construct (1) fiber sum indecomposable relatively minimal genus g Lefschetz fibrations over genus h surfaces whose monodromies lie in the Torelli group, (2) fiber sum indecomposable genus g surface bundles over genus h surfaces whose monodromies are in the Torelli group (provided g > 3), and (3) infinitely many genus g Lefschetz fibrations over genus h surfaces that are not fiber sums of holomorphic ones.

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