Properties

Label 5.1.20.39a3.8
Base \(\Q_{5}\)
Degree \(20\)
e \(20\)
f \(1\)
c \(39\)
Galois group not computed

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Defining polynomial

Copy content comment:Define the p-adic field
 
Copy content sage:Prec = 100 # Default precision of 100 Q5 = Qp(5, Prec); x = polygen(QQ) K.<a> = Q5.extension(x^20 + 50*x^4 + 25*x^3 + 10)
 
Copy content magma:Prec := 100; // Default precision of 100 Q5 := pAdicField(5, Prec); K := LocalField(Q5, Polynomial(Q5, [10, 0, 0, 25, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]));
 

\(x^{20} + 50 x^{4} + 25 x^{3} + 10\) Copy content Toggle raw display

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

Invariants

Base field: $\Q_{5}$
Copy content comment:Base field Qp
 
Copy content sage:K.base()
 
Copy content magma:Q5;
 
Degree $d$: $20$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$20$
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 $c$:$39$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{5}(\sqrt{5\cdot 2})$
Root number: $-1$
$\Aut(K/\Q_{5})$: $C_1$
Visible Artin slopes:$[\frac{9}{4}]$
Visible Swan slopes:$[\frac{5}{4}]$
Means:$\langle1\rangle$
Rams:$(5)$
Jump set:undefined
Roots of unity:$4 = (5 - 1)$
Copy content comment:Roots of unity
 
Copy content sage:len(K.roots_of_unity())
 

Intermediate fields

$\Q_{5}(\sqrt{5\cdot 2})$, 5.1.4.3a1.2

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

Canonical tower

Unramified subfield:$\Q_{5}$
Copy content comment:Maximal unramified subextension
 
Copy content sage:K.maximal_unramified_subextension()
 
Relative Eisenstein polynomial: \( x^{20} + 50 x^{4} + 25 x^{3} + 10 \) Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^{15} + 4 z^{10} + z^5 + 4$,$4 z^4 + 3$
Associated inertia:$1$,$4$
Indices of inseparability:$[20, 0]$

Invariants of the Galois closure

Galois degree: not computed
Galois group: not computed
Inertia group: not computed
Wild inertia group: not computed
Galois unramified degree: not computed
Galois tame degree: not computed
Galois Artin slopes: not computed
Galois Swan slopes: not computed
Galois mean slope: not computed
Galois splitting model:not computed