Properties

Label 23.8.6.3
Base \(\Q_{23}\)
Degree \(8\)
e \(4\)
f \(2\)
c \(6\)
Galois group $C_8:C_2$ (as 8T7)

Related objects

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Defining polynomial

\( x^{8} - 23 x^{4} + 3703 \)

Invariants

Base field: $\Q_{23}$
Degree $d$ : $8$
Ramification exponent $e$ : $4$
Residue field degree $f$ : $2$
Discriminant exponent $c$ : $6$
Discriminant root field: $\Q_{23}(\sqrt{*})$
Root number: $-1$
$|\Aut(K/\Q_{ 23 })|$: $4$
This field is not Galois over $\Q_{23}$.

Intermediate fields

$\Q_{23}(\sqrt{*})$, 23.4.2.2

Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.

Unramified/totally ramified tower

Unramified subfield:$\Q_{23}(\sqrt{*})$ $\cong \Q_{23}(t)$ where $t$ is a root of \( x^{2} - x + 7 \)
Relative Eisenstein polynomial:$ x^{4} - 23 t \in\Q_{23}(t)[x]$

Invariants of the Galois closure

Galois group:$OD_{16}$ (as 8T7)
Inertia group:Intransitive group isomorphic to $C_4$
Unramified degree:$4$
Tame degree:$4$
Wild slopes:None
Galois mean slope:$3/4$
Galois splitting model:Not computed