Decision problems and profinite completions of groups
We consider pairs of finitely presented, residually finite groups $P\hookrightarrow\G$ for which the induced map of profinite completions $\hat P\to \hat\G$ is an isomorphism. We prove that there is no algorithm that, given an arbitrary such pair, can determine whether or not $P$ is isomorphic to $\...
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
2008
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