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10.52 (1986)

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(R. Mines). It is well known that the topology on the completion of an abelian group under the $p$-adic topology is the $p$-adic topology. R. Warfield has shown that this is also true in the category of nilpotent groups. Find a categorical setting for this theorem which includes the case of nilpotent groups.

Contributor: S. V. Rychkov

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