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Defining polynomial

Copy content comment:Define the p-adic field
 
Copy content sage:Prec = 100 # Default precision of 100 Q97 = Qp(97, Prec); x = polygen(QQ) L.<t> = Q97.extension(x^3 + 9*x + 92) K.<a> = L.extension(x^3 + 97*t^2)
 
Copy content magma:Prec := 100; // Default precision of 100 Q97 := pAdicField(97, Prec); K := LocalField(Q97, Polynomial(Q97, [778688, 228528, 22453, 26121, 4968, 243, 276, 27, 0, 1]));
 

$( x^{3} + 9 x + 92 )^{3} + 97 x^{2}$ Copy content Toggle raw display

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

Invariants

Base field: $\Q_{97}$
Copy content comment:Base field Qp
 
Copy content sage:K.base()
 
Copy content magma:Q97;
 
Degree $d$: $9$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$3$
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Copy content sage:K.absolute_e()
 
Copy content magma:RamificationIndex(K);
 
Residue field degree $f$:$3$
Copy content comment:Residue field degree (Inertia degree)
 
Copy content sage:K.absolute_f()
 
Copy content magma:InertiaDegree(K);
 
Discriminant exponent $c$:$6$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{97}$
Root number: $1$
$\Aut(K/\Q_{97})$ $=$ $\Gal(K/\Q_{97})$: $C_9$
This field is Galois and abelian over $\Q_{97}.$
Visible Artin slopes:$[\ ]$
Visible Swan slopes:$[\ ]$
Means:$\langle\ \rangle$
Rams:$(\ )$
Jump set:undefined
Roots of unity:$912672 = (97^{ 3 } - 1)$
Copy content comment:Roots of unity
 
Copy content sage:len(K.roots_of_unity())
 

Intermediate fields

97.3.1.0a1.1

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

Canonical tower

Unramified subfield:97.3.1.0a1.1 $\cong \Q_{97}(t)$ where $t$ is a root of \( x^{3} + 9 x + 92 \) Copy content Toggle raw display
Copy content comment:Maximal unramified subextension
 
Copy content sage:K.maximal_unramified_subextension()
 
Relative Eisenstein polynomial: \( x^{3} + 97 t^{2} \) $\ \in\Q_{97}(t)[x]$ Copy content Toggle raw display

Ramification polygon

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

Invariants of the Galois closure

Galois degree: $9$
Galois group: $C_9$ (as 9T1)
Inertia group: Intransitive group isomorphic to $C_3$
Wild inertia group: $C_1$
Galois unramified degree: $3$
Galois tame degree: $3$
Galois Artin slopes: $[\ ]$
Galois Swan slopes: $[\ ]$
Galois mean slope: $0.6666666666666666$
Galois splitting model:not computed