Properties

Label 83.4.2.1
Base \(\Q_{83}\)
Degree \(4\)
e \(2\)
f \(2\)
c \(2\)
Galois group $C_2^2$ (as 4T2)

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Defining polynomial

\( x^{4} + 249 x^{2} + 27556 \)

Invariants

Base field: $\Q_{83}$
Degree $d$ : $4$
Ramification exponent $e$ : $2$
Residue field degree $f$ : $2$
Discriminant exponent $c$ : $2$
Discriminant root field: $\Q_{83}$
Root number: $1$
$|\Gal(K/\Q_{ 83 })|$: $4$
This field is Galois and abelian over $\Q_{83}$.

Intermediate fields

$\Q_{83}(\sqrt{*})$, $\Q_{83}(\sqrt{83})$, $\Q_{83}(\sqrt{83*})$

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

Unramified/totally ramified tower

Unramified subfield:$\Q_{83}(\sqrt{*})$ $\cong \Q_{83}(t)$ where $t$ is a root of \( x^{2} - x + 2 \)
Relative Eisenstein polynomial:$ x^{2} - 83 t^{2} \in\Q_{83}(t)[x]$

Invariants of the Galois closure

Galois group:$C_2^2$ (as 4T2)
Inertia group:Intransitive group isomorphic to $C_2$
Unramified degree:$2$
Tame degree:$2$
Wild slopes:None
Galois mean slope:$1/2$
Galois splitting model:$x^{4} + 249 x^{2} + 27556$