Properties

Label 31.15.12.1
Base \(\Q_{31}\)
Degree \(15\)
e \(5\)
f \(3\)
c \(12\)
Galois group $C_{15}$ (as 15T1)

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Defining polynomial

\( x^{15} + 1395 x^{10} + 388244 x^{5} + 1759128759 \)

Invariants

Base field: $\Q_{31}$
Degree $d$ : $15$
Ramification exponent $e$ : $5$
Residue field degree $f$ : $3$
Discriminant exponent $c$ : $12$
Discriminant root field: $\Q_{31}$
Root number: $1$
$|\Gal(K/\Q_{ 31 })|$: $15$
This field is Galois and abelian over $\Q_{31}$.

Intermediate fields

31.3.0.1, 31.5.4.1

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

Unramified/totally ramified tower

Unramified subfield:31.3.0.1 $\cong \Q_{31}(t)$ where $t$ is a root of \( x^{3} - x + 9 \)
Relative Eisenstein polynomial:$ x^{5} - 31 t^{5} \in\Q_{31}(t)[x]$

Invariants of the Galois closure

Galois group:$C_{15}$ (as 15T1)
Inertia group:Intransitive group isomorphic to $C_5$
Unramified degree:$3$
Tame degree:$5$
Wild slopes:None
Galois mean slope:$4/5$
Galois splitting model:Not computed