Monodromy of supersolvable toric arrangements

Fuente: arXiv
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Main Authors: Bibby, Christin, Cohen, Daniel C., Delucchi, Emanuele
Format: Preprint
Published: 2025
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author Bibby, Christin
Cohen, Daniel C.
Delucchi, Emanuele
author_facet Bibby, Christin
Cohen, Daniel C.
Delucchi, Emanuele
contents We study topological aspects of supersolvable abelian arrangements, toric arrangements in particular. The complement of such an arrangement sits atop a tower of fiber bundles, and we investigate the relationship between these bundles and bundles involving classical configuration spaces. In the toric case, we show that the monodromy of a supersolvable arrangement bundle factors through the Artin braid group, and that of a strictly supersolvable arrangement bundle factors further through the Artin pure braid group. The latter factorization is particularly informative -- we use it to determine a number of invariants of the complement of a strictly supersolvable arrangement, including the cohomology ring and the lower central series Lie algebra of the fundamental group.
format Preprint
id arxiv_https___arxiv_org_abs_2510_00166
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Monodromy of supersolvable toric arrangements
Bibby, Christin
Cohen, Daniel C.
Delucchi, Emanuele
Algebraic Topology
Combinatorics
55R10, 55R80
We study topological aspects of supersolvable abelian arrangements, toric arrangements in particular. The complement of such an arrangement sits atop a tower of fiber bundles, and we investigate the relationship between these bundles and bundles involving classical configuration spaces. In the toric case, we show that the monodromy of a supersolvable arrangement bundle factors through the Artin braid group, and that of a strictly supersolvable arrangement bundle factors further through the Artin pure braid group. The latter factorization is particularly informative -- we use it to determine a number of invariants of the complement of a strictly supersolvable arrangement, including the cohomology ring and the lower central series Lie algebra of the fundamental group.
title Monodromy of supersolvable toric arrangements
topic Algebraic Topology
Combinatorics
55R10, 55R80
url https://arxiv.org/abs/2510.00166