Finite automorphisms of negatively curved Poincare Duality groups
F. T. Farrell, J. -F. Lafont
Abstract
In this paper, we show that if G is a finite p-group (p prime) acting by automorphisms on a δ-hyperbolic Poincare Duality group, then the fixed subgroup is a Poincare Duality group over Z/p. We also provide examples to show that the fixed subgroup might not even be a Duality group over Z.
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