The finitude of tamely ramified pro-$p$ extensions of number fields with cyclic $p$-class groups
Let $p$ be an odd prime and $F$ be a number field whose $p$-class group is cyclic. Let $F_{\{\mathfrak{q}\}}$ be the maximal pro-$p$ extension of $F$ which is unramified outside a single non-$p$-adic prime ideal $\mathfrak{q}$ of $F$. In this work, we study the finitude of the Galois group $G_{\{\ma...
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Zusammenfassung: | Let $p$ be an odd prime and $F$ be a number field whose $p$-class group is
cyclic. Let $F_{\{\mathfrak{q}\}}$ be the maximal pro-$p$ extension of $F$
which is unramified outside a single non-$p$-adic prime ideal $\mathfrak{q}$ of
$F$. In this work, we study the finitude of the Galois group
$G_{\{\mathfrak{q}\}}(F)$ of $F_{\{\mathfrak{q}\}}$ over $F$. We prove that
$G_{\{\mathfrak{q}\}}(F)$ is finite for the majority of $\mathfrak{q}$'s such
that the generator rank of $G_{\{\mathfrak{q}\}}(F)$ is two, provided that for
$p = 3$, $F$ is not a complex quartic field containing the primitive third
roots of unity. |
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DOI: | 10.48550/arxiv.2402.08512 |