$\pi_1$-classification of real arrangements with up to eight lines
Algebraic Geometry
2007-05-23 v1 Algebraic Topology
Group Theory
Abstract
One of the open questions in the geometry of line arrangements is to what extent does the incidence lattice of an arrangement determine its fundamental group. Line arrangements of up to 6 lines were recently classified by K.M. Fan, and it turns out that the incidence lattice of such arrangements determines the projective fundamental group. We use actions on the set of wiring diagrams, introduced in [GTV] (math.AG/0107178), to classify real arrangements of up to 8 lines. In particular, we show that the incidence lattice of such arrangements determines both the affine and the projective fundamental groups.
Keywords
Cite
@article{arxiv.math/0107192,
title = {$\pi_1$-classification of real arrangements with up to eight lines},
author = {David Garber and Mina Teicher and Uzi Vishne},
journal= {arXiv preprint arXiv:math/0107192},
year = {2007}
}
Comments
29 pages, many figures; Submitted