Rigidity of graph products of abelian groups
arXiv:0710.2571 · doi:10.1017/S0004972708000105
Abstract
We show that if is a group and has a graph-product decomposition with finitely-generated abelian vertex groups, then has two canonical decompositions as a graph product of groups: a unique decomposition in which each vertex group is a directly-indecomposable cyclic group, and a unique decomposition in which each vertex group is a finitely-generated abelian group and the graph satisfies the property. Our results build on results by Droms, Laurence and Radcliffe.
11 pages, 1 figure