Properties

Label 23.8.7.2
Base \(\Q_{23}\)
Degree \(8\)
e \(8\)
f \(1\)
c \(7\)
Galois group $D_{8}$ (as 8T6)

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Defining polynomial

\(x^{8} + 115\) Copy content Toggle raw display

Invariants

Base field: $\Q_{23}$
Degree $d$: $8$
Ramification exponent $e$: $8$
Residue field degree $f$: $1$
Discriminant exponent $c$: $7$
Discriminant root field: $\Q_{23}(\sqrt{23\cdot 5})$
Root number: $-i$
$\card{ \Aut(K/\Q_{ 23 }) }$: $2$
This field is not Galois over $\Q_{23}.$
Visible slopes:None

Intermediate fields

$\Q_{23}(\sqrt{23})$, 23.4.3.2

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

Unramified/totally ramified tower

Unramified subfield:$\Q_{23}$
Relative Eisenstein polynomial: \( x^{8} + 115 \) Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^{7} + 8z^{6} + 5z^{5} + 10z^{4} + z^{3} + 10z^{2} + 5z + 8$
Associated inertia:$2$
Indices of inseparability:$[0]$

Invariants of the Galois closure

Galois group:$D_8$ (as 8T6)
Inertia group:$C_8$ (as 8T1)
Wild inertia group:$C_1$
Unramified degree:$2$
Tame degree:$8$
Wild slopes:None
Galois mean slope:$7/8$
Galois splitting model:Not computed