학술논문
Property FA is not a profinite property
Document Type
Working Paper
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Subject
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Abstract
We exhibit infinitely many pairs of non-isomorphic finitely presented, residually finite groups $\Delta$ and $\Gamma$ with $\Delta$ having Property FA, $\Gamma$ having a non-trivial action on a tree and $\Delta$ and $\Gamma$ having isomorphic profinite completions.
Comment: 5 pages
Comment: 5 pages