The icosahedral line configuration and Waldschmidt constants
The icosahedral line configuration and Waldschmidt constants
复制标题
二十面体线构型和 Waldschmidt 常数
DOI:
10.1016/j.jpaa.2023.107563
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发表时间:
2024
影响因子:
0.8
通讯作者:
Calvo, Sebastian
中科院分区:
文献类型:
--
作者:
Calvo, Sebastian
There is a highly special point configuration in P 2 of 31 points, naturally arising from the geometry of the icosahedron. The 15 planes of symmetry of the icosahedron projectivize to 15 lines in P 2, whose points of intersections yield the 31 points. Each point corresponds to an opposite pair of vertices, faces or edges of the icosahedron. The symmetry group of the icosahedron is G= A 5× Z 2, one of finitely many exceptional complex reflection groups. The action of G on the icosahedron descends onto an action on the line configuration. We blow up P 2 at the 31 points to study the line configuration. The Waldschmidt constant is a measure of how special a collection of points in P 2 is. In this paper, we study negative G-invariant curves on this blow-up in order to compute the Waldschmidt constant of the ideal of the 31 singularities.
影响因子:
0.8
作者:
B. Drabkin;A. Seceleanu
通讯作者:
A. Seceleanu
DOI:
10.4064/bc116-6
发表时间:
2017
期刊:
arXiv: Algebraic Geometry
影响因子:
--
作者:
B. Harbourne
通讯作者:
B. Harbourne