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- W4301477870 abstract "In this paper, we study $k$-parabolic arrangements, a generalization of the $k$-equal arrangement for any finite real reflection group. When $k=2$, these arrangements correspond to the well-studied Coxeter arrangements. We construct a cell complex $Perm_k(W)$ that is homotopy equivalent to the complement. We then apply discrete Morse theory to obtain a minimal cell complex for the complement. As a result, we give combinatorial interpretations for the Betti numbers, and show that the homology groups are torsion free. We also study a generalization of the Independence Complex of a graph, and show that this generalization is shellable when the graph is a forest. This result is used in studying $Perm_k(W)$ using discrete Morse theory." @default.
- W4301477870 created "2022-10-05" @default.
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- W4301477870 date "2010-12-15" @default.
- W4301477870 modified "2023-10-17" @default.
- W4301477870 title "On the Homology of the Real Complement of the $k$-Parabolic Subspace Arrangement" @default.
- W4301477870 doi "https://doi.org/10.48550/arxiv.1012.3387" @default.
- W4301477870 hasPublicationYear "2010" @default.
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