Authors: Tim Hsu and Ian J Leary 

Tim Hsu 
Affiliation: San Jos\'e State University 

Ian Leary
Affiliation: The Ohio State University

Abstract: An Artin HNN-extension is an HNN-extension of an Artin 
group in which the stable letter conjugates a pair of suitably 
chosen subsets of the standard generating set.  We show that some 
finite index subgroup of an Artin HNN-extension embeds in an Artin
group.  We also obtain an analogous result for Coxeter groups.  

Status: preprint