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The fundamental group of Galois cover of the surface ${\mathbb T} \times {\mathbb T}$

Meirav Amram·Mina Teicher·Uzi Vishne
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Abstract

This is the final paper in a series of four, concerning the surface $T \times T$ embedded in $\mathbb{CP}^8$, where $T$ is a the one dimensional torus. In this paper we compute the fundamental group of the Galois cover of the surface with respect to a generic projection onto $\mathbb{CP}^2$, and show that it is nilpotent of class 3. This is the first time such a group is presented as the fundamental group of a Galois cover of a surface.

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Meirav Amram, Mina Teicher, Uzi Vishne. 2008-03-20. The fundamental group of Galois cover of the surface ${\mathbb T} \times {\mathbb T}$. https://arxiv.org/abs/math/0501318

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