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Genus 0 logarithmic and tropical fixed-domain counts for Hirzebruch surfaces
Journal of the London Mathematical Society ( IF 1.2 ) Pub Date : 2024-03-27 , DOI: 10.1112/jlms.12892
Alessio Cela 1 , Aitor Iribar López 1
Affiliation  

For a non-singular projective toric variety X $X$ , the virtual logarithmic Tevelev degrees are defined as the virtual degree of the morphism from the moduli stack of logarithmic stable maps M ¯ Γ ( X ) $\overline{\mathcal {M}}_{\mathsf {\Gamma }}(X)$ to the product M ¯ g , n × X n $\overline{\mathcal {M}}_{g,n} \times X^n$ . In this paper, after proving that Mikhalkin's correspondence theorem holds in genus 0 for logarithmic virtual Tevelev degrees, we use tropical methods to provide closed formulas for the case in which X $X$ is a Hirzebruch surface. In order to do so, we explicitly list all the tropical curves contributing to the count.

中文翻译:

Hirzebruch 表面的属 0 对数和热带固定域计数

对于非奇异射影复曲面簇 X $X$ ,虚对数 Tevelev 度定义为来自对数稳定映射的模堆栈的态射的虚拟度 中号 γ X $\overline{\mathcal {M}}_{\mathsf {\伽玛}}(X)$ 到产品 中号 G , n × X n $\overline{\mathcal {M}}_{g,n} \times X^n$ 。在本文中,在证明米哈尔金对应定理在对数虚拟Tevelev度的属0中成立后,我们使用热带方法提供了以下情况的封闭公式: X $X$ 是 Hirzebruch 曲面。为此,我们明确列出了对计数有贡献的所有热带曲线。
更新日期:2024-03-27
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