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Let $\Lambda$ be a Dedekind domain and $\mathcal{m}$ be a maximal ideal of $\Lambda$.

Is it possible that $\mathcal{m}=\mathcal{m}^2$?

If not, how can I prove it?

  • 4
    Wow, the site is really in good form tonight: three good answers all coming immediately.2011-03-28

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