66 citations · 214 across the 15 of their papers we have counts for
15 papers
The conjugacy problem in right-angled Artin groups and their subgroups
John Crisp, Eddy Godelle, Bert Wiest
We prove that the conjugacy problem in right-angled Artin groups (RAAGs), as well as in a large and natural class of subgroups of RAAGs, can be solved in linear-time. This class of…
Surface subgroups of right-angled Artin groups
John Crisp, Michah Sageev, Mark Sapir
We consider the question of which right-angled Artin groups contain closed hyperbolic surface subgroups. It is known that a right-angled Artin group has such a subgroup if i…
Automorphisms of two-dimensional right-angled Artin groups
Ruth Charney, John Crisp, Karen Vogtmann
We study the outer automorphism group of a right-angled Artin group A_G in the case where the defining graph G is connected and triangle-free. We give an algebraic description of O…
Boundary quotients and ideals of Toeplitz C*-algebras of Artin groups
John Crisp, Marcelo Laca
We study the quotients of the Toeplitz C*-algebra of a quasi-lattice ordered group (G,P), which we view as crossed products by a partial actions of G on closed invariant subsets of…
Relative hyperbolicity and Artin groups
Ruth Charney, John Crisp
This paper considers the question of relative hyperbolicity of an Artin group with regard to the geometry of its associated Deligne complex. We prove that an Artin group is weakly…
Quasi-isometrically embedded subgroups of braid and diffeomorphism groups
John Crisp, Bert Wiest
We show that a large class of right-angled Artin groups (in particular, those with planar complementary defining graph) can be embedded quasi-isometrically in pure braid groups and…