Properties

Label 17.2.6.10a1.1
Base \(\Q_{17}\)
Degree \(12\)
e \(6\)
f \(2\)
c \(10\)
Galois group $C_3\times (C_3 : C_4)$ (as 12T19)

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Defining polynomial

Copy content comment:Define the p-adic field
 
Copy content sage:Prec = 100 # Default precision of 100 Q17 = Qp(17, Prec); x = polygen(QQ) L.<t> = Q17.extension(x^2 + 16*x + 3) K.<a> = L.extension(x^6 + (17*t + 255))
 
Copy content magma:Prec := 100; // Default precision of 100 Q17 := pAdicField(17, Prec); K := LocalField(Q17, Polynomial(Q17, [729, 23345, 312498, 2250720, 9263295, 21112128, 22883356, 7037376, 1029255, 83360, 3858, 96, 1]));
 

$( x^{2} + 16 x + 3 )^{6} + 17 x$ Copy content Toggle raw display

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

Invariants

Base field: $\Q_{17}$
Copy content comment:Base field Qp
 
Copy content sage:K.base()
 
Copy content magma:Q17;
 
Degree $d$: $12$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$6$
Copy content comment:Ramification index
 
Copy content sage:K.absolute_e()
 
Copy content magma:RamificationIndex(K);
 
Residue field degree $f$:$2$
Copy content comment:Residue field degree (Inertia degree)
 
Copy content sage:K.absolute_f()
 
Copy content magma:InertiaDegree(K);
 
Discriminant exponent $c$:$10$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{17}(\sqrt{3})$
Root number: $1$
$\Aut(K/\Q_{17})$: $C_6$
This field is not Galois over $\Q_{17}.$
Visible Artin slopes:$[\ ]$
Visible Swan slopes:$[\ ]$
Means:$\langle\ \rangle$
Rams:$(\ )$
Jump set:undefined
Roots of unity:$288 = (17^{ 2 } - 1)$
Copy content comment:Roots of unity
 
Copy content sage:len(K.roots_of_unity())
 

Intermediate fields

$\Q_{17}(\sqrt{3})$, 17.2.2.2a1.1, 17.2.3.4a1.1

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

Canonical tower

Unramified subfield:$\Q_{17}(\sqrt{3})$ $\cong \Q_{17}(t)$ where $t$ is a root of \( x^{2} + 16 x + 3 \) Copy content Toggle raw display
Copy content comment:Maximal unramified subextension
 
Copy content sage:K.maximal_unramified_subextension()
 
Relative Eisenstein polynomial: \( x^{6} + 17 t + 255 \) $\ \in\Q_{17}(t)[x]$ Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^5 + 6 z^4 + 15 z^3 + 3 z^2 + 15 z + 6$
Associated inertia:$1$
Indices of inseparability:$[0]$

Invariants of the Galois closure

Galois degree: $36$
Galois group: $C_3:C_{12}$ (as 12T19)
Inertia group: Intransitive group isomorphic to $C_6$
Wild inertia group: $C_1$
Galois unramified degree: $6$
Galois tame degree: $6$
Galois Artin slopes: $[\ ]$
Galois Swan slopes: $[\ ]$
Galois mean slope: $0.8333333333333334$
Galois splitting model:not computed