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arXiv · 2002.01670

Special cube complexes revisited: a quasi-median generalisation

Anthony Genevois
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Abstract

In this article, we generalise Haglund and Wise's theory of special cube complexes to groups acting on quasi-median graphs. More precisely, we define special actions on quasi-median graphs, and we show that a group which acts specially on a quasi-median graph with finitely many orbits of vertices must embed as a virtual retract into a graph product of finite extensions of clique-stabilisers. In the second part of the article, we apply the theory to fundamental groups of some graphs of groups called right-angled graphs of groups.

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Anthony Genevois. 2020-02-05. Special cube complexes revisited: a quasi-median generalisation. https://arxiv.org/abs/2002.01670

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