The isomorphism problem for profinite completions of residually finite groups
We consider pairs of finitely presented, residually finite groups $u:P\hookrightarrow \Gamma$. We prove that there is no algorithm that, given an arbitrary such pair, can determine whether or not the associated map of profinite completions $\hat{u}: \widehat{P} \to \widehat{\Gamma}$ is an isomorphis...
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| Format: | Journal article |
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European Mathematical Society
2014
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