The conductor $\mathfrak{f}_R$ of an order $R$ is the colon ideal $(R:\mathcal{O})$, where $\mathcal{O}$ is the maximal order. Recall that a maximal ideal $\mathfrak{m}$ of $R$ is non-invertible if and only if $\mathfrak{f}_R\subseteq \mathfrak{m}$.
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- Last edited by Stefano Marseglia on 2023-07-11 13:40:43
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