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math.GR2009★ 26 cited
JSJ decompositions: definitions, existence, uniqueness. I: The JSJ deformation space
Vincent Guirardel, Gilbert Levitt
This paper and its companion arXiv:1002.4564 have been replaced by arXiv:1602.05139. We give a general simple definition of JSJ decompositions by means of a universal maximality pr…
math.GR2009
Computing equations for residually free groups
Vincent Guirardel, Gilbert Levitt
We show that there is no algorithm deciding whether the maximal residually free quotient of a given finitely presented group is finitely presentable or not. Given a finitely genera…