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Properties

Label 14.0.14304150964...2448.1
Degree $14$
Signature $[0, 7]$
Discriminant $-\,2^{12}\cdot 3^{12}\cdot 7^{27}$
Root discriminant $198.07$
Ramified primes $2, 3, 7$
Class number $1$ (GRH)
Class group Trivial (GRH)
Galois group $F_7$ (as 14T4)

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Show commands for: Magma / SageMath / Pari/GP

magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![8276, 4844, -18284, 1036, 17332, -8176, 2086, -1877, 1337, -721, 329, -119, 35, -7, 1]);
 
sage: x = polygen(QQ); K.<a> = NumberField(x^14 - 7*x^13 + 35*x^12 - 119*x^11 + 329*x^10 - 721*x^9 + 1337*x^8 - 1877*x^7 + 2086*x^6 - 8176*x^5 + 17332*x^4 + 1036*x^3 - 18284*x^2 + 4844*x + 8276)
 
gp: K = bnfinit(x^14 - 7*x^13 + 35*x^12 - 119*x^11 + 329*x^10 - 721*x^9 + 1337*x^8 - 1877*x^7 + 2086*x^6 - 8176*x^5 + 17332*x^4 + 1036*x^3 - 18284*x^2 + 4844*x + 8276, 1)
 

Normalized defining polynomial

\( x^{14} - 7 x^{13} + 35 x^{12} - 119 x^{11} + 329 x^{10} - 721 x^{9} + 1337 x^{8} - 1877 x^{7} + 2086 x^{6} - 8176 x^{5} + 17332 x^{4} + 1036 x^{3} - 18284 x^{2} + 4844 x + 8276 \)

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

Invariants

Degree:  $14$
magma: Degree(K);
 
sage: K.degree()
 
gp: poldegree(K.pol)
 
Signature:  $[0, 7]$
magma: Signature(K);
 
sage: K.signature()
 
gp: K.sign
 
Discriminant:  \(-143041509649772631538232817512448=-\,2^{12}\cdot 3^{12}\cdot 7^{27}\)
magma: Discriminant(Integers(K));
 
sage: K.disc()
 
gp: K.disc
 
Root discriminant:  $198.07$
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:  $2, 3, 7$
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 \(a\))

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $\frac{1}{49} a^{7} + \frac{3}{7} a^{6} - \frac{1}{7} a^{5} + \frac{2}{7} a^{4} - \frac{1}{7} a^{3} + \frac{1}{7} a^{2} + \frac{1}{7} a + \frac{17}{49}$, $\frac{1}{98} a^{8} + \frac{3}{7} a^{6} + \frac{1}{7} a^{5} - \frac{1}{14} a^{4} - \frac{3}{7} a^{3} - \frac{3}{7} a^{2} - \frac{16}{49} a - \frac{1}{7}$, $\frac{1}{98} a^{9} + \frac{1}{7} a^{6} - \frac{1}{14} a^{5} - \frac{3}{7} a^{4} - \frac{3}{7} a^{3} - \frac{16}{49} a^{2} - \frac{1}{7} a - \frac{2}{7}$, $\frac{1}{98} a^{10} - \frac{1}{14} a^{6} - \frac{3}{7} a^{5} - \frac{3}{7} a^{4} - \frac{16}{49} a^{3} - \frac{1}{7} a^{2} - \frac{2}{7} a - \frac{3}{7}$, $\frac{1}{98} a^{11} - \frac{1}{98} a^{7} - \frac{1}{7} a^{6} + \frac{1}{7} a^{5} - \frac{23}{49} a^{4} + \frac{3}{7} a^{3} + \frac{1}{7} a^{2} + \frac{2}{49}$, $\frac{1}{686} a^{12} + \frac{1}{686} a^{11} - \frac{1}{686} a^{10} - \frac{3}{686} a^{9} - \frac{1}{686} a^{8} + \frac{5}{686} a^{7} + \frac{13}{98} a^{6} + \frac{185}{686} a^{5} + \frac{26}{343} a^{4} - \frac{61}{343} a^{3} - \frac{162}{343} a^{2} + \frac{58}{343} a - \frac{10}{343}$, $\frac{1}{1336994649998} a^{13} - \frac{366260295}{1336994649998} a^{12} - \frac{4774772237}{1336994649998} a^{11} + \frac{549798283}{190999235714} a^{10} + \frac{1060364792}{668497324999} a^{9} - \frac{113095863}{1336994649998} a^{8} + \frac{12372028521}{1336994649998} a^{7} - \frac{55389241849}{1336994649998} a^{6} - \frac{259704689537}{1336994649998} a^{5} - \frac{269791062316}{668497324999} a^{4} + \frac{39885011528}{95499617857} a^{3} - \frac{141541105547}{668497324999} a^{2} + \frac{304603863044}{668497324999} a + \frac{220168184630}{668497324999}$

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

Class group and class number

Trivial group, which has order $1$ (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:  $6$
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:  \( 73259799380.21962 \) (assuming GRH)
magma: Regulator(K);
 
sage: K.regulator()
 
gp: K.reg
 

Galois group

$F_7$ (as 14T4):

magma: GaloisGroup(K);
 
sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
A solvable group of order 42
The 7 conjugacy class representatives for $F_7$
Character table for $F_7$

Intermediate fields

\(\Q(\sqrt{-7}) \), 7.1.4520453669548992.7

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

Sibling fields

Galois closure: data not computed
Degree 7 sibling: data not computed
Degree 21 sibling: 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 R R ${\href{/LocalNumberField/5.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/5.2.0.1}{2} }$ R ${\href{/LocalNumberField/11.3.0.1}{3} }^{4}{,}\,{\href{/LocalNumberField/11.1.0.1}{1} }^{2}$ ${\href{/LocalNumberField/13.2.0.1}{2} }^{7}$ ${\href{/LocalNumberField/17.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/17.2.0.1}{2} }$ ${\href{/LocalNumberField/19.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/19.2.0.1}{2} }$ ${\href{/LocalNumberField/23.3.0.1}{3} }^{4}{,}\,{\href{/LocalNumberField/23.1.0.1}{1} }^{2}$ ${\href{/LocalNumberField/29.7.0.1}{7} }^{2}$ ${\href{/LocalNumberField/31.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/31.2.0.1}{2} }$ ${\href{/LocalNumberField/37.3.0.1}{3} }^{4}{,}\,{\href{/LocalNumberField/37.1.0.1}{1} }^{2}$ ${\href{/LocalNumberField/41.2.0.1}{2} }^{7}$ ${\href{/LocalNumberField/43.7.0.1}{7} }^{2}$ ${\href{/LocalNumberField/47.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/47.2.0.1}{2} }$ ${\href{/LocalNumberField/53.3.0.1}{3} }^{4}{,}\,{\href{/LocalNumberField/53.1.0.1}{1} }^{2}$ ${\href{/LocalNumberField/59.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/59.2.0.1}{2} }$

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
$2$2.7.6.1$x^{7} - 2$$7$$1$$6$$C_7:C_3$$[\ ]_{7}^{3}$
2.7.6.1$x^{7} - 2$$7$$1$$6$$C_7:C_3$$[\ ]_{7}^{3}$
$3$3.14.12.1$x^{14} - 3 x^{7} + 18$$7$$2$$12$$F_7$$[\ ]_{7}^{6}$
$7$7.14.27.56$x^{14} + 49 x^{13} - 147 x^{12} - 49 x^{11} + 147 x^{10} - 49 x^{9} + 98 x^{8} - 42 x^{7} - 147 x^{6} + 147 x^{5} + 49 x^{3} + 49 x^{2} + 49 x - 42$$14$$1$$27$$F_7$$[13/6]_{6}$