论文标题

一些不含三角形的artin群体的肘

Cubulation of some triangle-free Artin groups

论文作者

Haettel, Thomas

论文摘要

我们证明,某些无三角形的Artin组适当地作用于局部有限的有限维CAT(0)立方体复合体。特别是,这提供了适当组合但实际上不能同时组合的Artin组的第一个例子。这种适当的作用的存在对小组有许多有趣的后果,尤其是Haagerup特性,而Baum-Connes猜想则具有系数。

We prove that some classes of triangle-free Artin groups act properly on locally finite, finite-dimensional CAT(0) cube complexes. In particular, this provides the first examples of Artin groups that are properly cubulated but cannot be cocompactly cubulated, even virtually. The existence of such a proper action has many interesting consequences for the group, notably the Haagerup property, and the Baum-Connes conjecture with coefficients.

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