Properties

Label 5.1.15.27a1.28
Base \(\Q_{5}\)
Degree \(15\)
e \(15\)
f \(1\)
c \(27\)
Galois group $C_5^2:(C_4\times S_3)$ (as 15T27)

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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^15 + 10*x^13 + 50*x + 5)
 
Copy content magma:Prec := 100; // Default precision of 100 Q5 := pAdicField(5, Prec); K := LocalField(Q5, Polynomial(Q5, [5, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 1]));
 

\(x^{15} + 10 x^{13} + 50 x + 5\) 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 $d$: $15$
Copy content comment:Degree over Qp
 
Copy content sage:K.absolute_degree()
 
Copy content magma:Degree(K);
 
Ramification index $e$:$15$
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 $c$:$27$
Copy content comment:Discriminant exponent
 
Copy content magma:Valuation(Discriminant(K));
 
Discriminant root field:$\Q_{5}(\sqrt{5})$
Root number: $-1$
$\Aut(K/\Q_{5})$: $C_1$
This field is not Galois over $\Q_{5}.$
Visible Artin slopes:$[\frac{25}{12}]$
Visible Swan slopes:$[\frac{13}{12}]$
Means:$\langle\frac{13}{15}\rangle$
Rams:$(\frac{13}{4})$
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

5.1.3.2a1.1

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: \( x^{15} + 10 x^{13} + 50 x + 5 \) Copy content Toggle raw display

Ramification polygon

Residual polynomials:$z^{10} + 3 z^5 + 3$,$3 z + 4$
Associated inertia:$2$,$1$
Indices of inseparability:$[13, 0]$

Invariants of the Galois closure

Galois degree: $600$
Galois group: $C_5^2:(C_4\times S_3)$ (as 15T27)
Inertia group: $C_5^2:C_{12}$ (as 15T19)
Wild inertia group: $C_5^2$
Galois unramified degree: $2$
Galois tame degree: $12$
Galois Artin slopes: $[\frac{25}{12}, \frac{25}{12}]$
Galois Swan slopes: $[\frac{13}{12},\frac{13}{12}]$
Galois mean slope: $2.0366666666666666$
Galois splitting model: $x^{15} - 1410 x^{13} - 42300 x^{12} + 1138575 x^{11} + 46215100 x^{10} - 20985500 x^{9} - 25595683000 x^{8} - 152599100625 x^{7} + 9224230424600 x^{6} + 83510272045950 x^{5} - 2209233057231500 x^{4} - 42924366063633375 x^{3} - 253461714650159700 x^{2} - 432761578585424000 x + 334744652645864960$ Copy content Toggle raw display