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Properties

Label 12.0.10660187973...6877.1
Degree $12$
Signature $[0, 6]$
Discriminant $13^{11}\cdot 29^{6}$
Root discriminant $56.53$
Ramified primes $13, 29$
Class number $1256$ (GRH)
Class group $[2, 628]$ (GRH)
Galois group $C_{12}$ (as 12T1)

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Show commands for: Magma / SageMath / Pari/GP

magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![3552641, -2023204, 2023204, -493767, 493767, -56785, 56785, -3277, 3277, -92, 92, -1, 1]);
 
sage: x = polygen(QQ); K.<a> = NumberField(x^12 - x^11 + 92*x^10 - 92*x^9 + 3277*x^8 - 3277*x^7 + 56785*x^6 - 56785*x^5 + 493767*x^4 - 493767*x^3 + 2023204*x^2 - 2023204*x + 3552641)
 
gp: K = bnfinit(x^12 - x^11 + 92*x^10 - 92*x^9 + 3277*x^8 - 3277*x^7 + 56785*x^6 - 56785*x^5 + 493767*x^4 - 493767*x^3 + 2023204*x^2 - 2023204*x + 3552641, 1)
 

Normalized defining polynomial

\( x^{12} - x^{11} + 92 x^{10} - 92 x^{9} + 3277 x^{8} - 3277 x^{7} + 56785 x^{6} - 56785 x^{5} + 493767 x^{4} - 493767 x^{3} + 2023204 x^{2} - 2023204 x + 3552641 \)

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

Invariants

Degree:  $12$
magma: Degree(K);
 
sage: K.degree()
 
gp: poldegree(K.pol)
 
Signature:  $[0, 6]$
magma: Signature(K);
 
sage: K.signature()
 
gp: K.sign
 
Discriminant:  \(1066018797345756936877=13^{11}\cdot 29^{6}\)
magma: Discriminant(Integers(K));
 
sage: K.disc()
 
gp: K.disc
 
Root discriminant:  $56.53$
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:  $13, 29$
magma: PrimeDivisors(Discriminant(Integers(K)));
 
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
This field is Galois and abelian over $\Q$.
Conductor:  \(377=13\cdot 29\)
Dirichlet character group:    $\lbrace$$\chi_{377}(1,·)$, $\chi_{377}(233,·)$, $\chi_{377}(202,·)$, $\chi_{377}(204,·)$, $\chi_{377}(146,·)$, $\chi_{377}(115,·)$, $\chi_{377}(30,·)$, $\chi_{377}(86,·)$, $\chi_{377}(88,·)$, $\chi_{377}(57,·)$, $\chi_{377}(28,·)$, $\chi_{377}(318,·)$$\rbrace$
This is a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $\frac{1}{669761} a^{7} + \frac{64689}{669761} a^{6} + \frac{49}{669761} a^{5} + \frac{37894}{669761} a^{4} + \frac{686}{669761} a^{3} - \frac{271874}{669761} a^{2} + \frac{2401}{669761} a + \frac{172428}{669761}$, $\frac{1}{669761} a^{8} + \frac{56}{669761} a^{6} + \frac{216938}{669761} a^{5} + \frac{980}{669761} a^{4} + \frac{225459}{669761} a^{3} + \frac{5488}{669761} a^{2} + \frac{238691}{669761} a + \frac{4802}{669761}$, $\frac{1}{669761} a^{9} - \frac{56841}{669761} a^{6} - \frac{1764}{669761} a^{5} + \frac{2126}{12637} a^{4} - \frac{32928}{669761} a^{3} + \frac{59132}{669761} a^{2} - \frac{129654}{669761} a - \frac{279314}{669761}$, $\frac{1}{669761} a^{10} - \frac{2205}{669761} a^{6} + \frac{218843}{669761} a^{5} - \frac{51450}{669761} a^{4} + \frac{205920}{669761} a^{3} - \frac{324135}{669761} a^{2} + \frac{234444}{669761} a - \frac{302526}{669761}$, $\frac{1}{669761} a^{11} + \frac{198995}{669761} a^{6} + \frac{56595}{669761} a^{5} + \frac{42065}{669761} a^{4} - \frac{151027}{669761} a^{3} + \frac{188369}{669761} a^{2} + \frac{303352}{669761} a - \frac{220508}{669761}$

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

Class group and class number

$C_{2}\times C_{628}$, which has order $1256$ (assuming GRH)

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

Unit group

magma: UK, f := UnitGroup(K);
 
sage: UK = K.unit_group()
 
Rank:  $5$
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 (assuming GRH)
magma: [K!f(g): g in Generators(UK)];
 
sage: UK.fundamental_units()
 
gp: K.fu
 
Regulator:  \( 120.784031363 \) (assuming GRH)
magma: Regulator(K);
 
sage: K.regulator()
 
gp: K.reg
 

Galois group

$C_{12}$ (as 12T1):

magma: GaloisGroup(K);
 
sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
A cyclic group of order 12
The 12 conjugacy class representatives for $C_{12}$
Character table for $C_{12}$

Intermediate fields

\(\Q(\sqrt{13}) \), 3.3.169.1, 4.0.1847677.1, \(\Q(\zeta_{13})^+\)

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

Frobenius cycle types

$p$ 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59
Cycle type ${\href{/LocalNumberField/2.12.0.1}{12} }$ ${\href{/LocalNumberField/3.6.0.1}{6} }^{2}$ ${\href{/LocalNumberField/5.4.0.1}{4} }^{3}$ ${\href{/LocalNumberField/7.12.0.1}{12} }$ ${\href{/LocalNumberField/11.12.0.1}{12} }$ R ${\href{/LocalNumberField/17.3.0.1}{3} }^{4}$ ${\href{/LocalNumberField/19.12.0.1}{12} }$ ${\href{/LocalNumberField/23.6.0.1}{6} }^{2}$ R ${\href{/LocalNumberField/31.4.0.1}{4} }^{3}$ ${\href{/LocalNumberField/37.12.0.1}{12} }$ ${\href{/LocalNumberField/41.12.0.1}{12} }$ ${\href{/LocalNumberField/43.3.0.1}{3} }^{4}$ ${\href{/LocalNumberField/47.4.0.1}{4} }^{3}$ ${\href{/LocalNumberField/53.1.0.1}{1} }^{12}$ ${\href{/LocalNumberField/59.12.0.1}{12} }$

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
$13$13.12.11.4$x^{12} - 832$$12$$1$$11$$C_{12}$$[\ ]_{12}$
$29$29.6.3.1$x^{6} - 58 x^{4} + 841 x^{2} - 219501$$2$$3$$3$$C_6$$[\ ]_{2}^{3}$
29.6.3.1$x^{6} - 58 x^{4} + 841 x^{2} - 219501$$2$$3$$3$$C_6$$[\ ]_{2}^{3}$