Logarithmic moduli of roots of line bundles on curves
Logarithmic moduli of roots of line bundles on curves
复制标题
曲线上线束根的对数模
DOI:
10.1016/j.exmath.2023.04.001
复制
发表时间:
2022
影响因子:
0.7
通讯作者:
G. Orecchia
中科院分区:
文献类型:
--
作者:
D. Holmes;G. Orecchia
We use the theory of logarithmic line bundles to construct compactifications of spaces of roots of a line bundle on a family of curves, generalising work of a number of authors. This runs via a study of the torsion in the tropical and logarithmic jacobians (recently constructed by Molcho and Wise). Our moduli space carries a ‘double ramification cycle’ measuring the locus where the given root is isomorphic to the trivial bundle, and we give a tautological formula for this class in the language of piecewise polynomial functions (as recently developed by Molcho–Pandharipande–Schmitt and Holmes–Schwarz).
DOI:
10.1515/crelle-2023-0031
发表时间:
2023
期刊:
Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子:
--
作者:
Holmes D
通讯作者:
Holmes D