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Talk:Dirichlet convolution

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This is an old revision of this page, as edited by Linas (talk | contribs) at 05:00, 6 January 2005. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
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Explain why its a Dirichlet ring, and not a field_(mathematics). Naively, it seems to have additive and multiplicative units and inverses. linas 05:00, 6 Jan 2005 (UTC)