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math.GR2006★ 15 cited
Local indicability and commutator subgroups of Artin groups
Jamie Mulholland, Dale Rolfsen
We determine which of the finite-type Artin groups are locally indicable, and compute presentations for their commutator subgroups.
math.GR2006
Invariant group orderings and Galois conjugates
Peter A. Linnell, Akbar H. Rhemtulla, Dale P. O. Rolfsen
This paper investigates conditions under which a given automorphism of a residually torsion-free nilpotent group respects some ordering of the group. For free groups and surface gr…