Classification of aut-fixed subgroups in free-abelian times surface groups

Jialin Lei, Peng Wang, Qiang Zhang

In this paper, we are concerned with the direct product $G=\ddot{I}{€}_1(\hat{I}\pounds )\times {\mathbb{Z}}^k$ for $\hat{I}\pounds$ a compact orientable surface with negative Euler characteristic, and give a complete classi…