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An explicit wall crossing for the moduli space of hyperplane arrangements
- Publication Year :
- 2024
-
Abstract
- The moduli space of hyperplanes in projective space has a family of geometric and modular compactifications that parametrize stable hyperplane arrangements with respect to a weight vector. Among these, there is a toric compactification that generalizes the Losev-Manin moduli space of points on the line. We study the first natural wall crossing that modifies this compactification into a non-toric one by varying the weights. As an application of our work, we show that any $\mathbb{Q}$-factorialization of the blow up at the identity of the torus of the generalized Losev-Manin space is not a Mori dream space for a sufficiently high number of hyperplanes. Additionally, for lines in the plane, we provide a precise description of the wall crossing.<br />Comment: 25 pages, 5 figures. Comments are welcome
- Subjects :
- Mathematics - Algebraic Geometry
14J10, 14D06, 52C35
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2405.09051
- Document Type :
- Working Paper