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Canonical decompositions for Poincaré duality pairs

Peter Scott, Gadde A. Swarup

math.GRarXiv:math/0703890

Abstract

The authors previously described an algebraic analogue of the JSJ-decomposition of a 3-manifold. This analogue is defined for any finitely presented, one-ended group. We study this analogue in the special case of Poincaré duality pairs.

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