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arXiv 2005.14018math.AG
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光滑del Pezzo对数Calabi-Yau对的热带对应

Tropical correspondence for smooth del Pezzo log Calabi-Yau pairs

Tim Graefnitz

摘要:

考虑一个对数卡-丘对$(X,D)$,它由一个次数为$\geq 3$的光滑del Pezzo曲面$X$和一个光滑反正则因子$D$组成。证明了$X$与$D$在最大相切的单点相交的亏格零对数Gromov-Witten不变量与Gross-Siebert重构算法中出现在$(X,D)$的对偶相交复形中的一致壁结构之间的对应关系.更准确地说,在一致壁结构中,连接到无界壁的函数的乘积的对数给出了这些不变量的生成函数。

英文摘要:

Consider a log Calabi-Yau pair $(X,D)$ consisting of a smooth del Pezzo surface $X$ of degree $\geq 3$ and a smooth anticanonical divisor $D$. We prove a correspondence between genus zero logarithmic Gromov-Witten invariants of $X$ intersecting $D$ in a single point with maximal tangency and the consistent wall structure appearing in the dual intersection complex of $(X,D)$ from the Gross-Siebert reconstruction algorithm. More precisely, the logarithm of the product of functions attached to unbounded walls in the consistent wall structure gives a generating function for these invariants.

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