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Properties

Label 14.0.407483719072587.1
Degree $14$
Signature $(0, 7)$
Discriminant $-4.075\times 10^{14}$
Root discriminant \(11.06\)
Ramified primes $3,73$
Class number $1$
Class group trivial
Galois group $A_7\times C_2$ (as 14T47)

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Normalized defining polynomial

Copy content comment:Define the number field
 
Copy content sage:x = polygen(QQ); K.<a> = NumberField(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1)
 
Copy content gp:K = bnfinit(y^14 - y^13 + 4*y^12 - y^11 + 4*y^10 + 2*y^9 - 6*y^8 + 3*y^7 - 6*y^6 + 2*y^5 + 4*y^4 - y^3 + 4*y^2 - y + 1, 1)
 
Copy content magma:R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1);
 
Copy content oscar:Qx, x = polynomial_ring(QQ); K, a = number_field(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1)
 

\( x^{14} - x^{13} + 4 x^{12} - x^{11} + 4 x^{10} + 2 x^{9} - 6 x^{8} + 3 x^{7} - 6 x^{6} + 2 x^{5} + \cdots + 1 \) Copy content Toggle raw display

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

Invariants

Degree:  $14$
Copy content comment:Degree over Q
 
Copy content sage:K.degree()
 
Copy content gp:poldegree(K.pol)
 
Copy content magma:Degree(K);
 
Copy content oscar:degree(K)
 
Signature:  $(0, 7)$
Copy content comment:Signature
 
Copy content sage:K.signature()
 
Copy content gp:K.sign
 
Copy content magma:Signature(K);
 
Copy content oscar:signature(K)
 
Discriminant:   \(-407483719072587\) \(\medspace = -\,3^{15}\cdot 73^{4}\) Copy content Toggle raw display
Copy content comment:Discriminant
 
Copy content sage:K.disc()
 
Copy content gp:K.disc
 
Copy content magma:OK := Integers(K); Discriminant(OK);
 
Copy content oscar:OK = ring_of_integers(K); discriminant(OK)
 
Root discriminant:  \(11.06\)
Copy content comment:Root discriminant
 
Copy content sage:(K.disc().abs())^(1./K.degree())
 
Copy content gp:abs(K.disc)^(1/poldegree(K.pol))
 
Copy content magma:Abs(Discriminant(OK))^(1/Degree(K));
 
Copy content oscar:OK = ring_of_integers(K); (1.0 * abs(discriminant(OK)))^(1/degree(K))
 
Galois root discriminant:  $3^{25/18}73^{2/3}\approx 80.3310880644573$
Ramified primes:   \(3\), \(73\) Copy content Toggle raw display
Copy content comment:Ramified primes
 
Copy content sage:K.disc().support()
 
Copy content gp:factor(abs(K.disc))[,1]~
 
Copy content magma:PrimeDivisors(Discriminant(OK));
 
Copy content oscar:prime_divisors(discriminant(OK))
 
Discriminant root field:  \(\Q(\sqrt{-3}) \)
$\Aut(K/\Q)$:   $C_2$
Copy content comment:Automorphisms
 
Copy content sage:K.automorphisms()
 
Copy content magma:Automorphisms(K);
 
Copy content oscar:automorphism_group(K)
 
This field is not Galois over $\Q$.
This is not a CM field.
Maximal CM subfield:  \(\Q(\sqrt{-3}) \)

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $\frac{1}{3}a^{8}-\frac{1}{3}a^{7}+\frac{1}{3}a^{6}+\frac{1}{3}a^{5}-\frac{1}{3}a^{4}+\frac{1}{3}a^{3}+\frac{1}{3}a^{2}-\frac{1}{3}a+\frac{1}{3}$, $\frac{1}{3}a^{9}-\frac{1}{3}a^{6}-\frac{1}{3}a^{3}+\frac{1}{3}$, $\frac{1}{3}a^{10}-\frac{1}{3}a^{7}-\frac{1}{3}a^{4}+\frac{1}{3}a$, $\frac{1}{3}a^{11}-\frac{1}{3}a^{7}+\frac{1}{3}a^{6}-\frac{1}{3}a^{4}+\frac{1}{3}a^{3}-\frac{1}{3}a^{2}-\frac{1}{3}a+\frac{1}{3}$, $\frac{1}{9}a^{12}+\frac{1}{9}a^{11}-\frac{1}{9}a^{10}-\frac{1}{9}a^{9}-\frac{1}{3}a^{6}+\frac{1}{3}a^{5}-\frac{1}{3}a^{4}-\frac{4}{9}a^{3}-\frac{4}{9}a^{2}+\frac{4}{9}a-\frac{2}{9}$, $\frac{1}{9}a^{13}+\frac{1}{9}a^{11}+\frac{1}{9}a^{9}+\frac{1}{3}a^{7}+\frac{1}{3}a^{5}-\frac{4}{9}a^{4}+\frac{1}{3}a^{3}-\frac{4}{9}a^{2}-\frac{4}{9}$ Copy content Toggle raw display

Copy content comment:Integral basis
 
Copy content sage:K.integral_basis()
 
Copy content gp:K.zk
 
Copy content magma:IntegralBasis(K);
 
Copy content oscar:basis(OK)
 

Monogenic:  Not computed
Index:  $1$
Inessential primes:  None

Class group and class number

Ideal class group:  Trivial group, which has order $1$
Copy content comment:Class group
 
Copy content sage:K.class_group().invariants()
 
Copy content gp:K.clgp
 
Copy content magma:ClassGroup(K);
 
Copy content oscar:class_group(K)
 
Narrow class group:  Trivial group, which has order $1$
Copy content comment:Narrow class group
 
Copy content sage:K.narrow_class_group().invariants()
 
Copy content gp:bnfnarrow(K)
 
Copy content magma:NarrowClassGroup(K);
 

Unit group

Copy content comment:Unit group
 
Copy content sage:UK = K.unit_group()
 
Copy content magma:UK, fUK := UnitGroup(K);
 
Copy content oscar:UK, fUK = unit_group(OK)
 
Rank:  $6$
Copy content comment:Unit rank
 
Copy content sage:UK.rank()
 
Copy content gp:K.fu
 
Copy content magma:UnitRank(K);
 
Copy content oscar:rank(UK)
 
Torsion generator:   \( -\frac{2}{3} a^{13} - \frac{5}{3} a^{11} - 2 a^{10} - \frac{4}{3} a^{9} - \frac{8}{3} a^{8} + \frac{8}{3} a^{7} + 4 a^{6} + \frac{1}{3} a^{5} + \frac{4}{3} a^{4} - 3 a^{3} - 3 a^{2} - \frac{1}{3} a - \frac{2}{3} \)  (order $6$) Copy content Toggle raw display
Copy content comment:Generator for roots of unity
 
Copy content sage:UK.torsion_generator()
 
Copy content gp:K.tu[2]
 
Copy content magma:K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
Copy content oscar:torsion_units_generator(OK)
 
Fundamental units:   $\frac{2}{3}a^{13}-\frac{4}{3}a^{12}+\frac{8}{3}a^{11}-\frac{7}{3}a^{10}+\frac{2}{3}a^{9}-\frac{20}{3}a^{7}+\frac{14}{3}a^{6}+\frac{5}{3}a^{4}+4a^{3}-\frac{11}{3}a^{2}-\frac{1}{3}a-1$, $\frac{2}{3}a^{13}-\frac{4}{9}a^{12}+\frac{23}{9}a^{11}+\frac{1}{9}a^{10}+\frac{25}{9}a^{9}+2a^{8}-3a^{7}-\frac{10}{3}a^{5}-\frac{1}{3}a^{4}+\frac{31}{9}a^{3}+\frac{16}{9}a^{2}+\frac{14}{9}a+\frac{2}{9}$, $\frac{2}{3}a^{13}-\frac{5}{9}a^{12}+\frac{22}{9}a^{11}+\frac{2}{9}a^{10}+\frac{17}{9}a^{9}+\frac{8}{3}a^{8}-\frac{11}{3}a^{7}+a^{6}-2a^{5}-\frac{5}{3}a^{4}+\frac{23}{9}a^{3}+\frac{8}{9}a^{2}+\frac{13}{9}a+\frac{1}{9}$, $\frac{1}{9}a^{13}-\frac{7}{9}a^{12}+a^{11}-\frac{20}{9}a^{10}-\frac{1}{9}a^{9}-\frac{1}{3}a^{8}-4a^{7}+\frac{17}{3}a^{6}-\frac{7}{3}a^{5}+\frac{5}{9}a^{4}+\frac{16}{9}a^{3}-\frac{16}{3}a^{2}+\frac{14}{9}a-\frac{14}{9}$, $\frac{7}{9}a^{13}-\frac{5}{9}a^{12}+\frac{26}{9}a^{11}-\frac{1}{9}a^{10}+\frac{10}{3}a^{9}+\frac{4}{3}a^{8}-3a^{7}-\frac{1}{3}a^{6}-3a^{5}+\frac{11}{9}a^{4}+\frac{23}{9}a^{3}+\frac{7}{9}a^{2}+\frac{10}{9}a$, $\frac{7}{9}a^{13}-\frac{5}{9}a^{12}+\frac{26}{9}a^{11}-\frac{1}{9}a^{10}+3a^{9}+\frac{5}{3}a^{8}-\frac{13}{3}a^{7}+\frac{1}{3}a^{6}-\frac{14}{3}a^{5}+\frac{17}{9}a^{4}+\frac{38}{9}a^{3}+\frac{10}{9}a^{2}+\frac{25}{9}a-1$ Copy content Toggle raw display
Copy content comment:Fundamental units
 
Copy content sage:UK.fundamental_units()
 
Copy content gp:K.fu
 
Copy content magma:[K|fUK(g): g in Generators(UK)];
 
Copy content oscar:[K(fUK(a)) for a in gens(UK)]
 
Regulator:  \( 96.5294199023 \)
Copy content comment:Regulator
 
Copy content sage:K.regulator()
 
Copy content gp:K.reg
 
Copy content magma:Regulator(K);
 
Copy content oscar:regulator(K)
 

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{7}\cdot 96.5294199023 \cdot 1}{6\cdot\sqrt{407483719072587}}\cr\approx \mathstrut & 0.308114682253 \end{aligned}\]

Copy content comment:Analytic class number formula
 
Copy content sage:# self-contained SageMath code snippet to compute the analytic class number formula x = polygen(QQ); K.<a> = NumberField(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1) DK = K.disc(); r1,r2 = K.signature(); RK = K.regulator(); RR = RK.parent() hK = K.class_number(); wK = K.unit_group().torsion_generator().order(); 2^r1 * (2*RR(pi))^r2 * RK * hK / (wK * RR(sqrt(abs(DK))))
 
Copy content gp:\\ self-contained Pari/GP code snippet to compute the analytic class number formula K = bnfinit(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1, 1); [polcoeff (lfunrootres (lfuncreate (K))[1][1][2], -1), 2^K.r1 * (2*Pi)^K.r2 * K.reg * K.no / (K.tu[1] * sqrt (abs (K.disc)))]
 
Copy content magma:/* self-contained Magma code snippet to compute the analytic class number formula */ Qx<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1); OK := Integers(K); DK := Discriminant(OK); UK, fUK := UnitGroup(OK); clK, fclK := ClassGroup(OK); r1,r2 := Signature(K); RK := Regulator(K); RR := Parent(RK); hK := #clK; wK := #TorsionSubgroup(UK); 2^r1 * (2*Pi(RR))^r2 * RK * hK / (wK * Sqrt(RR!Abs(DK)));
 
Copy content oscar:# self-contained Oscar code snippet to compute the analytic class number formula Qx, x = polynomial_ring(QQ); K, a = number_field(x^14 - x^13 + 4*x^12 - x^11 + 4*x^10 + 2*x^9 - 6*x^8 + 3*x^7 - 6*x^6 + 2*x^5 + 4*x^4 - x^3 + 4*x^2 - x + 1); OK = ring_of_integers(K); DK = discriminant(OK); UK, fUK = unit_group(OK); clK, fclK = class_group(OK); r1,r2 = signature(K); RK = regulator(K); RR = parent(RK); hK = order(clK); wK = torsion_units_order(K); 2^r1 * (2*pi)^r2 * RK * hK / (wK * sqrt(RR(abs(DK))))
 

Galois group

$C_2\times A_7$ (as 14T47):

Copy content comment:Galois group
 
Copy content sage:K.galois_group()
 
Copy content gp:polgalois(K.pol)
 
Copy content magma:G = GaloisGroup(K);
 
Copy content oscar:G, Gtx = galois_group(K); degree(K) > 1 ? (G, transitive_group_identification(G)) : (G, nothing)
 
A non-solvable group of order 5040
The 18 conjugacy class representatives for $A_7\times C_2$
Character table for $A_7\times C_2$

Intermediate fields

\(\Q(\sqrt{-3}) \), 7.3.3884841.1

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

Copy content comment:Intermediate fields
 
Copy content sage:K.subfields()[1:-1]
 
Copy content gp:L = nfsubfields(K); L[2..length(L)]
 
Copy content magma:L := Subfields(K); L[2..#L];
 
Copy content oscar:subfields(K)[2:end-1]
 

Sibling fields

Degree 30 siblings: data not computed
Degree 42 siblings: data not computed
Minimal sibling: This field is its own minimal sibling

Frobenius cycle types

$p$ $2$ $3$ $5$ $7$ $11$ $13$ $17$ $19$ $23$ $29$ $31$ $37$ $41$ $43$ $47$ $53$ $59$
Cycle type ${\href{/padicField/2.14.0.1}{14} }$ R ${\href{/padicField/5.14.0.1}{14} }$ ${\href{/padicField/7.7.0.1}{7} }^{2}$ ${\href{/padicField/11.14.0.1}{14} }$ ${\href{/padicField/13.4.0.1}{4} }^{2}{,}\,{\href{/padicField/13.2.0.1}{2} }^{2}{,}\,{\href{/padicField/13.1.0.1}{1} }^{2}$ ${\href{/padicField/17.6.0.1}{6} }^{2}{,}\,{\href{/padicField/17.2.0.1}{2} }$ ${\href{/padicField/19.7.0.1}{7} }^{2}$ ${\href{/padicField/23.4.0.1}{4} }^{2}{,}\,{\href{/padicField/23.2.0.1}{2} }^{3}$ ${\href{/padicField/29.4.0.1}{4} }^{2}{,}\,{\href{/padicField/29.2.0.1}{2} }^{3}$ ${\href{/padicField/31.3.0.1}{3} }^{4}{,}\,{\href{/padicField/31.1.0.1}{1} }^{2}$ ${\href{/padicField/37.7.0.1}{7} }^{2}$ ${\href{/padicField/41.4.0.1}{4} }^{2}{,}\,{\href{/padicField/41.2.0.1}{2} }^{3}$ ${\href{/padicField/43.4.0.1}{4} }^{2}{,}\,{\href{/padicField/43.2.0.1}{2} }^{2}{,}\,{\href{/padicField/43.1.0.1}{1} }^{2}$ ${\href{/padicField/47.14.0.1}{14} }$ ${\href{/padicField/53.14.0.1}{14} }$ ${\href{/padicField/59.10.0.1}{10} }{,}\,{\href{/padicField/59.2.0.1}{2} }^{2}$

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

Copy content comment:Frobenius cycle types
 
Copy content sage:# to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Sage: p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
Copy content gp:\\ to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Pari: p = 7; pfac = idealprimedec(K, p); vector(length(pfac), j, [pfac[j][3], pfac[j][4]])
 
Copy content magma:// to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Magma: p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];
 
Copy content oscar:# to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Oscar: p = 7; pfac = factor(ideal(ring_of_integers(K), p)); [(e, valuation(norm(pr),p)) for (pr,e) in pfac]
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
\(3\) Copy content Toggle raw display 3.1.2.1a1.1$x^{2} + 3$$2$$1$$1$$C_2$$$[\ ]_{2}$$
3.2.6.14a3.2$x^{12} + 12 x^{11} + 72 x^{10} + 280 x^{9} + 780 x^{8} + 1632 x^{7} + 2624 x^{6} + 3267 x^{5} + 3132 x^{4} + 2264 x^{3} + 1176 x^{2} + 396 x + 67$$6$$2$$14$12T40$$[\frac{3}{2}, \frac{3}{2}]_{2}^{4}$$
\(73\) Copy content Toggle raw display $\Q_{73}$$x + 68$$1$$1$$0$Trivial$$[\ ]$$
$\Q_{73}$$x + 68$$1$$1$$0$Trivial$$[\ ]$$
73.3.1.0a1.1$x^{3} + 2 x + 68$$1$$3$$0$$C_3$$$[\ ]^{3}$$
73.1.3.2a1.2$x^{3} + 365$$3$$1$$2$$C_3$$$[\ ]_{3}$$
73.1.3.2a1.2$x^{3} + 365$$3$$1$$2$$C_3$$$[\ ]_{3}$$
73.3.1.0a1.1$x^{3} + 2 x + 68$$1$$3$$0$$C_3$$$[\ ]^{3}$$

Spectrum of ring of integers

(0)(0)(2)(3)(5)(7)(11)(13)(17)(19)(23)(29)(31)(37)(41)(43)(47)(53)(59)