Properties

Label 3.1.17.16a1.1
Base \(\Q_{3}\)
Degree \(17\)
e \(17\)
f \(1\)
c \(16\)
Galois group $F_{17}$ (as 17T5)

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Defining polynomial

Copy content comment:Define the p-adic field
 
Copy content sage:Prec = 100 # Default precision of 100 Q3 = Qp(3, Prec); x = polygen(QQ) K.<a> = Q3.extension(x^17 + 3)
 
Copy content magma:Prec := 100; // Default precision of 100 Q3 := pAdicField(3, Prec); K := LocalField(Q3, Polynomial(Q3, [3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]));
 

\(x^{17} + 3\) Copy content Toggle raw display

Copy content comment:Defining polynomial
 
Copy content sage:K.defining_polynomial()
 
Copy content magma:DefiningPolynomial(K);
 

Invariants

Base field: $\Q_{3}$
Copy content comment:Base field Qp
 
Copy content sage:K.base()
 
Copy content magma:Q3;
 
Degree $d$: $17$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$17$
Copy content comment:Ramification index
 
Copy content sage:K.absolute_e()
 
Copy content magma:RamificationIndex(K);
 
Residue field degree $f$:$1$
Copy content comment:Residue field degree (Inertia degree)
 
Copy content sage:K.absolute_f()
 
Copy content magma:InertiaDegree(K);
 
Discriminant exponent $c$:$16$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{3}(\sqrt{2})$
Root number: $1$
$\Aut(K/\Q_{3})$: $C_1$
This field is not Galois over $\Q_{3}.$
Visible Artin slopes:$[\ ]$
Visible Swan slopes:$[\ ]$
Means:$\langle\ \rangle$
Rams:$(\ )$
Jump set:undefined
Roots of unity:$2 = (3 - 1)$
Copy content comment:Roots of unity
 
Copy content sage:len(K.roots_of_unity())
 

Intermediate fields

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

Canonical tower

Unramified subfield:$\Q_{3}$
Copy content comment:Maximal unramified subextension
 
Copy content sage:K.maximal_unramified_subextension()
 
Relative Eisenstein polynomial: \( x^{17} + 3 \) Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^{16} + 2 z^{15} + z^{14} + 2 z^{13} + z^{12} + 2 z^{11} + z^{10} + 2 z^9 + z^8 + z^7 + 2 z^6 + z^5 + 2 z^4 + z^3 + 2 z^2 + z + 2$
Associated inertia:$16$
Indices of inseparability:$[0]$

Invariants of the Galois closure

Galois degree: $272$
Galois group: $F_{17}$ (as 17T5)
Inertia group: $C_{17}$ (as 17T1)
Wild inertia group: $C_1$
Galois unramified degree: $16$
Galois tame degree: $17$
Galois Artin slopes: $[\ ]$
Galois Swan slopes: $[\ ]$
Galois mean slope: $0.9411764705882353$
Galois splitting model:$x^{17} - 3$