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math.GR2017★ 7 cited
A short note about diffuse Bieberbach groups
Anna Gąsior, Rafał Lutowski, Andrzej Szczepański
We consider low dimensional diffuse Bieberbach groups. In particular we classify diffuse Bieberbach groups up to dimension 6. We also answer a question from [S. Kionke, J. Raimbaul…
math.AT2017★ 1 cited
Classification of spin structures on 4-dimensional almost-flat manifolds
Rafał Lutowski, Nansen Petrosyan, Andrzej Szczepański
Almost-flat manifolds were defined by Gromov as a natural generalisation of flat manifolds and as such share many of their properties. Similarly to flat manifolds, it turns out tha…