Tailoring a pair of pants

Helge Ruddat; Ilia Zharkov

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arXiv · 2001.08267

Tailoring a pair of pants

Helge Ruddat·Ilia Zharkov

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Abstract

We show how to deform the map $\operatorname{Log}\colon (\mathbb{C}^*)^n \to \mathbb{R}^n$ such that the image of the complex pair of pants $P^\circ \subset {(\mathbb{C}^*)^n}$ is the tropical hyperplane by showing an (ambient) isotopy between $P^\circ \subset {(\mathbb{C}^*)^n}$ and a natural polyhedral subcomplex of the product of the two skeleta $S\times \Sigma \subset \mathcal{A} \times \mathcal{C}$ of the amoeba $\mathcal{A}$ and the coamoeba $\mathcal{C}$ of $P^\circ$. This lays the groundwork for having the discriminant to be of codimension 2 in topological Strominger-Yau-Zaslow torus fibrations.

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BibTeX RIS

Helge Ruddat, Ilia Zharkov. 2020-01-22. Tailoring a pair of pants. https://arxiv.org/abs/2001.08267

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