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

Amram, Meirav; Teicher, Mina; Vishne, Uzi

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

Authors

Amram, Meirav

Teicher, Mina

Vishne, Uzi

Description

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.
30 pages