Annulus-Torus decompositions for Poincaré duality pairs
نویسنده
چکیده
There are several algebraic analogues of the JSJ–decomposition of a 3–manifold, one of which was described by the authors. We study this analogue in the special case of Poincaré duality pairs. Introduction In [23], we obtained canonical decompositions for almost finitely presented groups analogous to the JSJ–decomposition of a 3–manifold. In particular, for many almost finitely presented groups G, and any integer n ≥ 1, we ∗Partially supported by NSF grants DMS 9626537 and 0203883
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