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Virtual Specialness of certain graphs of special cube complexes

Group Theory 2019-04-16 v1

Abstract

We investigate the virtual specialness of a compact cube complex XX that splits as a graph of nonpositively curved cube complexes. We prove virtual specialness of XX when each vertex space of XX has word-hyperbolic π1\pi_1 and π1X\pi_1X has ``finite stature'' relative to its edge groups. The results generalize the motivating case when tree ×\times tree lattices are virtual products.

Keywords

Cite

@article{arxiv.1904.06799,
  title  = {Virtual Specialness of certain graphs of special cube complexes},
  author = {Jingyin Huang and Daniel T. Wise},
  journal= {arXiv preprint arXiv:1904.06799},
  year   = {2019}
}

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27 pages