Abstract
Let be a global function field of characteristic , and let be a finite-index subgroup of an arithmetic group defined with respect to and such that any torsion element of is a –torsion element. We define semiduality groups, and we show that is a –semiduality group if acts as a lattice on a product of trees. We also give other examples of semiduality groups, including lamplighter groups, Diestel–Leader groups, and countable sums of finite groups.
Citation
Daniel Studenmund. Kevin Wortman. "Semidualities from products of trees." Geom. Topol. 22 (3) 1717 - 1758, 2018. https://doi.org/10.2140/gt.2018.22.1717
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