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arXiv · 1209.5372

Simplicity of twin tree lattices with non-trivial commutation relations

Pierre-Emmanuel Caprace·Bertrand Remy
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Abstract

We prove a simplicity criterion for certain twin tree lattices. It applies to all rank two Kac-Moody groups over finite fields with non-trivial commutation relations, thereby yielding examples of simple non-uniform lattices in the product of two trees.

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Pierre-Emmanuel Caprace, Bertrand Remy. 2012-09-24. Simplicity of twin tree lattices with non-trivial commutation relations. https://arxiv.org/abs/1209.5372

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