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On Algebraic Surfaces Associated with Line Arrangements

Published online by Cambridge University Press:  07 January 2019

Zhenjian Wang*
Affiliation:
CNRS, LJAD, UMR 7351, Univ. Nice Sophia Antipolis, 06100 Nice, France Email: [email protected]
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Abstract

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For a line arrangement ${\mathcal{A}}$ in the complex projective plane $\mathbb{P}^{2}$, we investigate the compactification $\overline{F}$ in $\mathbb{P}^{3}$ of the affine Milnor fiber $F$ and its minimal resolution $\tilde{F}$. We compute the Chern numbers of $\tilde{F}$ in terms of the combinatorics of the line arrangement ${\mathcal{A}}$. As applications of the computation of the Chern numbers, we show that the minimal resolution is never a quotient of a ball; in addition, we also prove that $\tilde{F}$ is of general type when the arrangement has only nodes or triple points as singularities. Finally, we compute all the Hodge numbers of some $\tilde{F}$ by using some knowledge about the Milnor fiber monodromy of the arrangement.

Type
Article
Copyright
© Canadian Mathematical Society 2018 

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