#### Volume 3, issue 1 (2003)

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A flat plane that is not the limit of periodic flat planes

### Daniel T Wise

Algebraic & Geometric Topology 3 (2003) 147–154
 arXiv: math.GR/0303071
##### Abstract

We construct a compact nonpositively curved squared 2–complex whose universal cover contains a flat plane that is not the limit of periodic flat planes.

##### Keywords
CAT(0), periodic flat planes, $C(4)$–$T(4)$ complexes
Primary: 20F67
Secondary: 20F06