Properties

Label 7.5.0.1
Base \(\Q_{7}\)
Degree \(5\)
e \(1\)
f \(5\)
c \(0\)
Galois group $C_5$ (as 5T1)

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Defining polynomial

\(x^{5} + x + 4\) Copy content Toggle raw display

Invariants

Base field: $\Q_{7}$
Degree $d$: $5$
Ramification exponent $e$: $1$
Residue field degree $f$: $5$
Discriminant exponent $c$: $0$
Discriminant root field: $\Q_{7}$
Root number: $1$
$\card{ \Gal(K/\Q_{ 7 }) }$: $5$
This field is Galois and abelian over $\Q_{7}.$
Visible slopes:None

Intermediate fields

The extension is primitive: there are no intermediate fields between this field and $\Q_{ 7 }$.

Unramified/totally ramified tower

Unramified subfield:7.5.0.1 $\cong \Q_{7}(t)$ where $t$ is a root of \( x^{5} + x + 4 \) Copy content Toggle raw display
Relative Eisenstein polynomial: \( x - 7 \) $\ \in\Q_{7}(t)[x]$ Copy content Toggle raw display

Ramification polygon

The ramification polygon is trivial for unramified extensions.

Invariants of the Galois closure

Galois group:$C_5$ (as 5T1)
Inertia group:trivial
Wild inertia group:$C_1$
Unramified degree:$5$
Tame degree:$1$
Wild slopes:None
Galois mean slope:$0$
Galois splitting model:$x^{5} - x^{4} - 4 x^{3} + 3 x^{2} + 3 x - 1$