7 citations · 7 across the 3 of their papers we have counts for
5 papers
Examples of non connective C*-algebras
Anna Gąsior, Andrzej Szczepański
We present an example of two infinite families of not connective groups. Both of them are generalized of the 3-dimensional Hantzsche-Wendt group.
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…
Spin structures on almost-flat manifolds
Anna Gąsior, Nansen Petrosyan, Andrzej Szczepański
We give a necessary and suffcient condition for almost-flat manifolds with cyclic holonomy to admit a Spin structure. Using this condition we find all 4-dimensional orientable almo…
Tangent bundles of Hantzsche-Wendt manifolds
Anna Gąsior, Andrzej Szczepański
We formulate a condition for an existence of a - structure on an oriented at manifold with . As an application we shall prove that all cyclic Hantzsch…
Flat manifolds with holonomy group Z_2^k of diagonal type
Anna Gąsior, Andrzej Szczepański
We consider relations between two families of flat manifolds with holonomy group (Z_2)^k of diagonal type. The family of real Bott manifolds and the family ${\cal GHW}…