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Properties

Label 12.8.1593224064453125.1
Degree $12$
Signature $[8, 2]$
Discriminant $5^{9}\cdot 13^{8}$
Root discriminant $18.49$
Ramified primes $5, 13$
Class number $1$
Class group Trivial
Galois group $C_4\times A_4$ (as 12T29)

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Show commands for: Magma / SageMath / Pari/GP

magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![5, -30, -90, 45, 151, -21, -72, -25, 26, 15, -8, -2, 1]);
 
sage: x = polygen(QQ); K.<a> = NumberField(x^12 - 2*x^11 - 8*x^10 + 15*x^9 + 26*x^8 - 25*x^7 - 72*x^6 - 21*x^5 + 151*x^4 + 45*x^3 - 90*x^2 - 30*x + 5)
 
gp: K = bnfinit(x^12 - 2*x^11 - 8*x^10 + 15*x^9 + 26*x^8 - 25*x^7 - 72*x^6 - 21*x^5 + 151*x^4 + 45*x^3 - 90*x^2 - 30*x + 5, 1)
 

Normalized defining polynomial

\( x^{12} - 2 x^{11} - 8 x^{10} + 15 x^{9} + 26 x^{8} - 25 x^{7} - 72 x^{6} - 21 x^{5} + 151 x^{4} + 45 x^{3} - 90 x^{2} - 30 x + 5 \)

magma: DefiningPolynomial(K);
 
sage: K.defining_polynomial()
 
gp: K.pol
 

Invariants

Degree:  $12$
magma: Degree(K);
 
sage: K.degree()
 
gp: poldegree(K.pol)
 
Signature:  $[8, 2]$
magma: Signature(K);
 
sage: K.signature()
 
gp: K.sign
 
Discriminant:  \(1593224064453125=5^{9}\cdot 13^{8}\)
magma: Discriminant(Integers(K));
 
sage: K.disc()
 
gp: K.disc
 
Root discriminant:  $18.49$
magma: Abs(Discriminant(Integers(K)))^(1/Degree(K));
 
sage: (K.disc().abs())^(1./K.degree())
 
gp: abs(K.disc)^(1/poldegree(K.pol))
 
Ramified primes:  $5, 13$
magma: PrimeDivisors(Discriminant(Integers(K)));
 
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
This field is not Galois over $\Q$.
This is not a CM field.

Integral basis (with respect to field generator \(a\))

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $\frac{1}{79} a^{9} - \frac{18}{79} a^{8} - \frac{2}{79} a^{7} + \frac{36}{79} a^{6} + \frac{19}{79} a^{5} + \frac{9}{79} a^{4} + \frac{25}{79} a^{3} + \frac{7}{79} a^{2} - \frac{22}{79} a + \frac{18}{79}$, $\frac{1}{395} a^{10} + \frac{2}{395} a^{9} + \frac{191}{395} a^{8} - \frac{4}{395} a^{7} + \frac{186}{395} a^{6} - \frac{17}{79} a^{5} - \frac{111}{395} a^{4} - \frac{25}{79} a^{3} - \frac{8}{79} a^{2} - \frac{37}{79} a - \frac{7}{79}$, $\frac{1}{395} a^{11} + \frac{2}{395} a^{9} + \frac{179}{395} a^{8} + \frac{169}{395} a^{7} - \frac{7}{395} a^{6} + \frac{99}{395} a^{5} + \frac{12}{395} a^{4} - \frac{14}{79} a^{3} + \frac{36}{79} a^{2} + \frac{12}{79} a - \frac{20}{79}$

magma: IntegralBasis(K);
 
sage: K.integral_basis()
 
gp: K.zk
 

Class group and class number

Trivial group, which has order $1$

magma: ClassGroup(K);
 
sage: K.class_group().invariants()
 
gp: K.clgp
 

Unit group

magma: UK, f := UnitGroup(K);
 
sage: UK = K.unit_group()
 
Rank:  $9$
magma: UnitRank(K);
 
sage: UK.rank()
 
gp: K.fu
 
Torsion generator:  \( -1 \) (order $2$)
magma: K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
sage: UK.torsion_generator()
 
gp: K.tu[2]
 
Fundamental units:  Units are too long to display, but can be downloaded with other data for this field from 'Stored data to gp' link to the right
magma: [K!f(g): g in Generators(UK)];
 
sage: UK.fundamental_units()
 
gp: K.fu
 
Regulator:  \( 2342.56496701 \)
magma: Regulator(K);
 
sage: K.regulator()
 
gp: K.reg
 

Galois group

$C_4\times A_4$ (as 12T29):

magma: GaloisGroup(K);
 
sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
A solvable group of order 48
The 16 conjugacy class representatives for $C_4\times A_4$
Character table for $C_4\times A_4$

Intermediate fields

\(\Q(\sqrt{5}) \), 3.3.169.1, 6.6.3570125.1

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

Sibling fields

Degree 16 sibling: data not computed
Degree 24 siblings: data not computed

Frobenius cycle types

$p$ 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59
Cycle type ${\href{/LocalNumberField/2.12.0.1}{12} }$ ${\href{/LocalNumberField/3.12.0.1}{12} }$ R ${\href{/LocalNumberField/7.12.0.1}{12} }$ ${\href{/LocalNumberField/11.3.0.1}{3} }^{4}$ R ${\href{/LocalNumberField/17.12.0.1}{12} }$ ${\href{/LocalNumberField/19.6.0.1}{6} }^{2}$ ${\href{/LocalNumberField/23.12.0.1}{12} }$ ${\href{/LocalNumberField/29.6.0.1}{6} }^{2}$ ${\href{/LocalNumberField/31.2.0.1}{2} }^{4}{,}\,{\href{/LocalNumberField/31.1.0.1}{1} }^{4}$ ${\href{/LocalNumberField/37.12.0.1}{12} }$ ${\href{/LocalNumberField/41.3.0.1}{3} }^{4}$ ${\href{/LocalNumberField/43.12.0.1}{12} }$ ${\href{/LocalNumberField/47.4.0.1}{4} }^{3}$ ${\href{/LocalNumberField/53.4.0.1}{4} }^{3}$ ${\href{/LocalNumberField/59.6.0.1}{6} }^{2}$

In the table, R denotes a ramified prime. Cycle lengths which are repeated in a cycle type are indicated by exponents.

magma: p := 7; // to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$:
 
magma: idealfactors := Factorization(p*Integers(K)); // get the data
 
magma: [<primefactor[2], Valuation(Norm(primefactor[1]), p)> : primefactor in idealfactors];
 
sage: p = 7; # to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$:
 
sage: [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
gp: p = 7; \\ to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$:
 
gp: idealfactors = idealprimedec(K, p); \\ get the data
 
gp: vector(length(idealfactors), j, [idealfactors[j][3], idealfactors[j][4]])
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
$5$5.4.3.2$x^{4} - 20$$4$$1$$3$$C_4$$[\ ]_{4}$
5.4.3.1$x^{4} - 5$$4$$1$$3$$C_4$$[\ ]_{4}$
5.4.3.1$x^{4} - 5$$4$$1$$3$$C_4$$[\ ]_{4}$
$13$13.12.8.1$x^{12} - 39 x^{9} - 338 x^{6} + 10985 x^{3} + 228488$$3$$4$$8$$C_{12}$$[\ ]_{3}^{4}$

Artin representations

Label Dimension Conductor Defining polynomial of Artin field $G$ Ind $\chi(c)$
* 1.1.1t1.1c1$1$ $1$ $x$ $C_1$ $1$ $1$
* 1.5.2t1.1c1$1$ $ 5 $ $x^{2} - x - 1$ $C_2$ (as 2T1) $1$ $1$
* 1.5_13.6t1.1c1$1$ $ 5 \cdot 13 $ $x^{6} - x^{5} - 12 x^{4} + 13 x^{3} + 19 x^{2} - 10 x - 5$ $C_6$ (as 6T1) $0$ $1$
* 1.13.3t1.1c1$1$ $ 13 $ $x^{3} - x^{2} - 4 x - 1$ $C_3$ (as 3T1) $0$ $1$
* 1.5_13.6t1.1c2$1$ $ 5 \cdot 13 $ $x^{6} - x^{5} - 12 x^{4} + 13 x^{3} + 19 x^{2} - 10 x - 5$ $C_6$ (as 6T1) $0$ $1$
* 1.13.3t1.1c2$1$ $ 13 $ $x^{3} - x^{2} - 4 x - 1$ $C_3$ (as 3T1) $0$ $1$
1.5.4t1.1c1$1$ $ 5 $ $x^{4} - x^{3} + x^{2} - x + 1$ $C_4$ (as 4T1) $0$ $-1$
1.5.4t1.1c2$1$ $ 5 $ $x^{4} - x^{3} + x^{2} - x + 1$ $C_4$ (as 4T1) $0$ $-1$
1.5_13.12t1.1c1$1$ $ 5 \cdot 13 $ $x^{12} - x^{11} + 5 x^{10} - 10 x^{9} + 31 x^{8} + 50 x^{7} + 84 x^{6} + 85 x^{5} + 201 x^{4} + 55 x^{3} + 15 x^{2} + 4 x + 1$ $C_{12}$ (as 12T1) $0$ $-1$
1.5_13.12t1.1c2$1$ $ 5 \cdot 13 $ $x^{12} - x^{11} + 5 x^{10} - 10 x^{9} + 31 x^{8} + 50 x^{7} + 84 x^{6} + 85 x^{5} + 201 x^{4} + 55 x^{3} + 15 x^{2} + 4 x + 1$ $C_{12}$ (as 12T1) $0$ $-1$
1.5_13.12t1.1c3$1$ $ 5 \cdot 13 $ $x^{12} - x^{11} + 5 x^{10} - 10 x^{9} + 31 x^{8} + 50 x^{7} + 84 x^{6} + 85 x^{5} + 201 x^{4} + 55 x^{3} + 15 x^{2} + 4 x + 1$ $C_{12}$ (as 12T1) $0$ $-1$
1.5_13.12t1.1c4$1$ $ 5 \cdot 13 $ $x^{12} - x^{11} + 5 x^{10} - 10 x^{9} + 31 x^{8} + 50 x^{7} + 84 x^{6} + 85 x^{5} + 201 x^{4} + 55 x^{3} + 15 x^{2} + 4 x + 1$ $C_{12}$ (as 12T1) $0$ $-1$
3.5e2_13e2.4t4.1c1$3$ $ 5^{2} \cdot 13^{2}$ $x^{4} - x^{3} - 3 x + 4$ $A_4$ (as 4T4) $1$ $-1$
3.5_13e2.6t6.1c1$3$ $ 5 \cdot 13^{2}$ $x^{6} - 2 x^{5} + x^{3} - 2 x + 1$ $A_4\times C_2$ (as 6T6) $1$ $-1$
* 3.5e3_13e2.12t29.1c1$3$ $ 5^{3} \cdot 13^{2}$ $x^{12} - 2 x^{11} - 8 x^{10} + 15 x^{9} + 26 x^{8} - 25 x^{7} - 72 x^{6} - 21 x^{5} + 151 x^{4} + 45 x^{3} - 90 x^{2} - 30 x + 5$ $C_4\times A_4$ (as 12T29) $0$ $1$
* 3.5e3_13e2.12t29.1c2$3$ $ 5^{3} \cdot 13^{2}$ $x^{12} - 2 x^{11} - 8 x^{10} + 15 x^{9} + 26 x^{8} - 25 x^{7} - 72 x^{6} - 21 x^{5} + 151 x^{4} + 45 x^{3} - 90 x^{2} - 30 x + 5$ $C_4\times A_4$ (as 12T29) $0$ $1$

Data is given for all irreducible representations of the Galois group for the Galois closure of this field. Those marked with * are summands in the permutation representation coming from this field. Representations which appear with multiplicity greater than one are indicated by exponents on the *.