Properties

Label 3.2.3.8a3.1
Base \(\Q_{3}\)
Degree \(6\)
e \(3\)
f \(2\)
c \(8\)
Galois group $C_3^2:C_4$ (as 6T10)

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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) L.<t> = Q3.extension(x^2 + 2*x + 2) K.<a> = L.extension(x^3 + (6*t + 3)*x^2 + 3)
 
Copy content magma:Prec := 100; // Default precision of 100 Q3 := pAdicField(3, Prec); K := LocalField(Q3, Polynomial(Q3, [11, 36, 60, 56, 30, 9, 1]));
 

$( x^{2} + 2 x + 2 )^{3} + 3 x ( x^{2} + 2 x + 2 )^{2} + 3$ 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 $d$: $6$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$3$
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 $c$:$8$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{3}$
Root number: $1$
$\Aut(K/\Q_{3})$: $C_1$
This field is not Galois over $\Q_{3}.$
Visible Artin slopes:$[2]$
Visible Swan slopes:$[1]$
Means:$\langle\frac{2}{3}\rangle$
Rams:$(1)$
Jump set:undefined
Roots of unity:$8 = (3^{ 2 } - 1)$
Copy content comment:Roots of unity
 
Copy content sage:len(K.roots_of_unity())
 

Intermediate fields

$\Q_{3}(\sqrt{2})$

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

Canonical tower

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

Ramification polygon

Residual polynomials:$z^2 + 2 t$
Associated inertia:$2$
Indices of inseparability:$[2, 0]$

Invariants of the Galois closure

Galois degree: $36$
Galois group: $C_3^2:C_4$ (as 6T10)
Inertia group: Intransitive group isomorphic to $C_3^2$
Wild inertia group: $C_3^2$
Galois unramified degree: $4$
Galois tame degree: $1$
Galois Artin slopes: $[2, 2]$
Galois Swan slopes: $[1,1]$
Galois mean slope: $1.7777777777777777$
Galois splitting model:$x^{6} - 6 x^{4} - x^{3} + 9 x^{2} + 3 x - 11$