Properties

Label 47.1.10.9a1.2
Base \(\Q_{47}\)
Degree \(10\)
e \(10\)
f \(1\)
c \(9\)
Galois group $F_{5}\times C_2$ (as 10T5)

Related objects

Downloads

Learn more

Show commands: Magma / SageMath

Defining polynomial

Copy content comment:Define the p-adic field
 
Copy content sage:Prec = 100 # Default precision of 100 Q47 = Qp(47, Prec); x = polygen(QQ) K.<a> = Q47.extension(x^10 + 235)
 
Copy content magma:Prec := 100; // Default precision of 100 Q47 := pAdicField(47, Prec); K := LocalField(Q47, Polynomial(Q47, [235, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]));
 

\(x^{10} + 235\) Copy content Toggle raw display

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

Invariants

Base field: $\Q_{47}$
Copy content comment:Base field Qp
 
Copy content sage:K.base()
 
Copy content magma:Q47;
 
Degree $d$: $10$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$10$
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 $c$:$9$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{47}(\sqrt{47})$
Root number: $i$
$\Aut(K/\Q_{47})$: $C_2$
This field is not Galois over $\Q_{47}.$
Visible Artin slopes:$[\ ]$
Visible Swan slopes:$[\ ]$
Means:$\langle\ \rangle$
Rams:$(\ )$
Jump set:undefined
Roots of unity:$46 = (47 - 1)$
Copy content comment:Roots of unity
 
Copy content sage:len(K.roots_of_unity())
 

Intermediate fields

$\Q_{47}(\sqrt{47})$, 47.1.5.4a1.1

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

Canonical tower

Unramified subfield:$\Q_{47}$
Copy content comment:Maximal unramified subextension
 
Copy content sage:K.maximal_unramified_subextension()
 
Relative Eisenstein polynomial: \( x^{10} + 235 \) Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^9 + 10 z^8 + 45 z^7 + 26 z^6 + 22 z^5 + 17 z^4 + 22 z^3 + 26 z^2 + 45 z + 10$
Associated inertia:$4$
Indices of inseparability:$[0]$

Invariants of the Galois closure

Galois degree: $40$
Galois group: $C_2\times F_5$ (as 10T5)
Inertia group: $C_{10}$ (as 10T1)
Wild inertia group: $C_1$
Galois unramified degree: $4$
Galois tame degree: $10$
Galois Artin slopes: $[\ ]$
Galois Swan slopes: $[\ ]$
Galois mean slope: $0.9$
Galois splitting model: $x^{10} - 47$ Copy content Toggle raw display