On the homology groups of arrangements of complex planes of codimension two (Q736172)

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scientific article; zbMATH DE number 5621782
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On the homology groups of arrangements of complex planes of codimension two
scientific article; zbMATH DE number 5621782

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    On the homology groups of arrangements of complex planes of codimension two (English)
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    27 October 2009
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    In the study of two-dimensional compact toric varieties, there naturally appears a set of coordinate planes of codimension two \( Z = \bigcup_{1 < \left| {i - j} \right| < d - 1} \{ z_i = z_j = 0\} \) in \(\mathbb{C}^d\). Based on the Alexander-Pontryagin duality theory, we construct a cycle that is dual to the generator of the highest dimensional nontrivial homology group of the complement in \(\mathbb{C}^d\) of the set of planes \(Z\). We explicitly describe cycles that generate groups \(H_{d+2}\mathbb{C}^d\setminus Z)\) and \(H_{d-3}(\bar Z)\), where \(\bar Z= Z \cup\{\infty\}\).
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    toric varieties
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    plane arrangements
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