Effective divisor classes on metric graphs
Effective divisor classes on metric graphs
复制标题
度量图上的有效除数类
DOI:
10.1007/s00209-022-03056-x
复制
发表时间:
2022
影响因子:
0.8
通讯作者:
Tóthmérész, Lilla
中科院分区:
文献类型:
--
作者:
Gross, Andreas;Shokrieh, Farbod;Tóthmérész, Lilla
We introduce the notion of semibreak divisors on metric graphs and prove that every effective divisor class (of degree at most the genus) has a semibreak divisor representative. This appropriately generalizes the notion of break divisors (in degree equal to genus). We provide an algorithm to efficiently compute such semibreak representatives. Semibreak divisors provide the tool to establish some basic properties of effective loci inside Picard groups of metric graphs. We prove that effective loci are pure-dimensional polyhedral sets. We also prove that a ‘generic’ divisor class (in degree at most the genus) has rank zero, and that the Abel-Jacobi map is ‘birational’ onto its image. These are analogues of classical results for Riemann surfaces.
登录
查看更多内容
DOI:
10.4153/cmb-2014-050-2
发表时间:
2014
期刊:
Canadian Mathematical Bulletin
影响因子:
--
作者:
Dustin A. Cartwright;D. Jensen;S. Payne
通讯作者:
S. Payne
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Baker;X. Faber
通讯作者:
X. Faber
影响因子:
1.3
作者:
D. Jensen;S. Payne
通讯作者:
S. Payne
DOI:
--
发表时间:
2011
期刊:
Journal of Combinatorial Theory
影响因子:
--
作者:
M. Baker;Farbod Shokrieh
通讯作者:
Farbod Shokrieh
DOI:
10.1016/j.aim.2017.01.005
发表时间:
2014
期刊:
ArXiv
影响因子:
--
作者:
Spencer Backman
通讯作者:
Spencer Backman