arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1609.02091math.AGmath.CO
收藏

关于低亏格图Brill-Noether存在性的注记

A note on Brill--Noether existence for graphs of low genus

Stanislav Atanasov, Dhruv Ranganathan

摘要:

在2008年的一篇有影响力的论文中,贝克提出了一些将代数曲线的除数理论与有限图的类似组合理论联系起来的理论。本文研究了特殊因子的Baker's Brill-Noether存在性猜想.对于$g\leq 5$和$ρ(g,r,d)$非负的,每个亏格$g$的图被证明允许秩$r$和度至多为$d$的因子。此外,该猜想被证明持有的秩$1$的一些家庭的高度连通的组合类型的图的任意高的属。在相关的属,我们的论点给出了第一个组合证明的Brill-Noether存在定理的度量图,给出了一个相关的问题Baker的部分答案。

英文摘要:

In an influential 2008 paper, Baker proposed a number of conjectures relating the divisor theory of algebraic curves with an analogous combinatorial theory on finite graphs. In this note, we examine Baker's Brill--Noether existence conjecture for special divisors. For $g\leq 5$ and $ρ(g,r,d)$ non-negative, every graph of genus $g$ is shown to admit a divisor of rank $r$ and degree at most $d$. Moreover, the conjecture is shown to hold in rank $1$ for a number of families of highly connected combinatorial types of graphs of arbitrarily high genus. In the relevant genera, our arguments give the first combinatorial proof of the Brill--Noether existence theorem for metric graphs, giving a partial answer to a related question of Baker.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑