Properties

Label 3.9.16.4
Base \(\Q_{3}\)
Degree \(9\)
e \(9\)
f \(1\)
c \(16\)
Galois group $C_3^2:C_4$ (as 9T9)

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Defining polynomial

\(x^{9} + 3 x^{8} + 3\) Copy content Toggle raw display

Invariants

Base field: $\Q_{3}$
Degree $d$: $9$
Ramification exponent $e$: $9$
Residue field degree $f$: $1$
Discriminant exponent $c$: $16$
Discriminant root field: $\Q_{3}$
Root number: $1$
$\card{ \Aut(K/\Q_{ 3 }) }$: $1$
This field is not Galois over $\Q_{3}.$
Visible slopes:$[2, 2]$

Intermediate fields

The extension is primitive: there are no intermediate fields between this field and $\Q_{ 3 }$.

Unramified/totally ramified tower

Unramified subfield:$\Q_{3}$
Relative Eisenstein polynomial: \( x^{9} + 3 x^{8} + 3 \) Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^{8} + 1$
Associated inertia:$4$
Indices of inseparability:$[8, 8, 0]$

Invariants of the Galois closure

Galois group:$C_3^2:C_4$ (as 9T9)
Inertia group:$C_3^2$ (as 9T2)
Wild inertia group:$C_3^2$
Unramified degree:$4$
Tame degree:$1$
Wild slopes:$[2, 2]$
Galois mean slope:$16/9$
Galois splitting model:$x^{9} - 3 x^{8} - 6 x^{7} + 18 x^{6} + 3 x^{5} + 15 x^{4} + 24 x^{3} - 264 x^{2} + 120 x + 184$