J. Aust. Math. Soc.
77 (2004), 335-348
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Homomorphisms of nonzero degree between
 -groups
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Jonathan A. Hillman
School of Mathematics and Statistics
The University of Sydney
Sydney NSW 2006
Australia
jonh@maths.usyd.edu.au
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Abstract
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We give algebraic proofs of some results of Wang
on homomorphisms of nonzero degree between
aspherical closed orientable 3-manifolds. Our
arguments apply to
 -groups which are virtually
poly- or have a Kropholler decomposition into parts of
generalized Seifert type, for all
 .
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