Properties

Label 10.2.63964006749578125.1
Degree $10$
Signature $[2, 4]$
Discriminant $6.396\times 10^{16}$
Root discriminant \(47.93\)
Ramified primes $5,17,941$
Class number $2$
Class group [2]
Galois group $S_{6}$ (as 10T32)

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Show commands: Magma / Oscar / PariGP / SageMath

Normalized defining polynomial

sage: x = polygen(QQ); K.<a> = NumberField(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428)
 
gp: K = bnfinit(y^10 - 3*y^9 + y^8 - y^7 + 6*y^6 + 157*y^5 - 1073*y^4 + 2815*y^3 - 3613*y^2 + 1961*y + 428, 1)
 
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428);
 
oscar: Qx, x = PolynomialRing(QQ); K, a = NumberField(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428)
 

\( x^{10} - 3x^{9} + x^{8} - x^{7} + 6x^{6} + 157x^{5} - 1073x^{4} + 2815x^{3} - 3613x^{2} + 1961x + 428 \) Copy content Toggle raw display

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

Invariants

Degree:  $10$
sage: K.degree()
 
gp: poldegree(K.pol)
 
magma: Degree(K);
 
oscar: degree(K)
 
Signature:  $[2, 4]$
sage: K.signature()
 
gp: K.sign
 
magma: Signature(K);
 
oscar: signature(K)
 
Discriminant:   \(63964006749578125\) \(\medspace = 5^{6}\cdot 17^{3}\cdot 941^{3}\) Copy content Toggle raw display
sage: K.disc()
 
gp: K.disc
 
magma: OK := Integers(K); Discriminant(OK);
 
oscar: OK = ring_of_integers(K); discriminant(OK)
 
Root discriminant:  \(47.93\)
sage: (K.disc().abs())^(1./K.degree())
 
gp: abs(K.disc)^(1/poldegree(K.pol))
 
magma: Abs(Discriminant(OK))^(1/Degree(K));
 
oscar: (1.0 * dK)^(1/degree(K))
 
Galois root discriminant:  $5^{2/3}17^{1/2}941^{1/2}\approx 369.8275626490481$
Ramified primes:   \(5\), \(17\), \(941\) Copy content Toggle raw display
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
magma: PrimeDivisors(Discriminant(OK));
 
oscar: prime_divisors(discriminant((OK)))
 
Discriminant root field:  \(\Q(\sqrt{15997}) \)
$\card{ \Aut(K/\Q) }$:  $1$
sage: K.automorphisms()
 
magma: Automorphisms(K);
 
oscar: automorphisms(K)
 
This field is not Galois over $\Q$.
This is not a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $\frac{1}{392107488809}a^{9}+\frac{127521433589}{392107488809}a^{8}+\frac{154564336999}{392107488809}a^{7}+\frac{190712486556}{392107488809}a^{6}-\frac{146485704569}{392107488809}a^{5}+\frac{161281325242}{392107488809}a^{4}+\frac{25146880891}{392107488809}a^{3}-\frac{39716327609}{392107488809}a^{2}+\frac{175113113061}{392107488809}a+\frac{177871912915}{392107488809}$ Copy content Toggle raw display

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

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

Class group and class number

$C_{2}$, which has order $2$

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

Unit group

sage: UK = K.unit_group()
 
magma: UK, fUK := UnitGroup(K);
 
oscar: UK, fUK = unit_group(OK)
 
Rank:  $5$
sage: UK.rank()
 
gp: K.fu
 
magma: UnitRank(K);
 
oscar: rank(UK)
 
Torsion generator:   \( -1 \)  (order $2$) Copy content Toggle raw display
sage: UK.torsion_generator()
 
gp: K.tu[2]
 
magma: K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
oscar: torsion_units_generator(OK)
 
Fundamental units:   $\frac{1142481536}{392107488809}a^{9}-\frac{503244493}{392107488809}a^{8}-\frac{2299580427}{392107488809}a^{7}-\frac{4627074141}{392107488809}a^{6}-\frac{1790862314}{392107488809}a^{5}+\frac{176181393144}{392107488809}a^{4}-\frac{739300430057}{392107488809}a^{3}+\frac{905188874298}{392107488809}a^{2}-\frac{330693590553}{392107488809}a-\frac{847487457127}{392107488809}$, $\frac{2558444255}{392107488809}a^{9}-\frac{4246600634}{392107488809}a^{8}+\frac{3106017062}{392107488809}a^{7}-\frac{8063987402}{392107488809}a^{6}-\frac{13666954512}{392107488809}a^{5}+\frac{384616497506}{392107488809}a^{4}-\frac{2261192887264}{392107488809}a^{3}+\frac{5464186262708}{392107488809}a^{2}-\frac{7867856500047}{392107488809}a+\frac{5163845852917}{392107488809}$, $\frac{3340555334}{392107488809}a^{9}-\frac{3169472627}{392107488809}a^{8}-\frac{12666045886}{392107488809}a^{7}-\frac{28825099025}{392107488809}a^{6}+\frac{6922656744}{392107488809}a^{5}+\frac{643131269340}{392107488809}a^{4}-\frac{2163268395772}{392107488809}a^{3}+\frac{2870642843311}{392107488809}a^{2}-\frac{723237255190}{392107488809}a-\frac{221513260421}{392107488809}$, $\frac{211565619}{392107488809}a^{9}-\frac{4008495291}{392107488809}a^{8}+\frac{4606335215}{392107488809}a^{7}+\frac{8320555053}{392107488809}a^{6}+\frac{4183139574}{392107488809}a^{5}-\frac{23039001348}{392107488809}a^{4}-\frac{934483915811}{392107488809}a^{3}+\frac{3101379157269}{392107488809}a^{2}-\frac{5102536099051}{392107488809}a+\frac{688600592659}{392107488809}$, $\frac{27998047611}{392107488809}a^{9}+\frac{1558519970}{392107488809}a^{8}+\frac{29138008224}{392107488809}a^{7}+\frac{22888761395}{392107488809}a^{6}+\frac{102347730048}{392107488809}a^{5}+\frac{4440000479451}{392107488809}a^{4}-\frac{16680105706916}{392107488809}a^{3}+\frac{27691486827330}{392107488809}a^{2}-\frac{18904112792895}{392107488809}a-\frac{3887928262543}{392107488809}$ Copy content Toggle raw display
sage: UK.fundamental_units()
 
gp: K.fu
 
magma: [K|fUK(g): g in Generators(UK)];
 
oscar: [K(fUK(a)) for a in gens(UK)]
 
Regulator:  \( 33402.2510876 \)
sage: K.regulator()
 
gp: K.reg
 
magma: Regulator(K);
 
oscar: regulator(K)
 

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{2}\cdot(2\pi)^{4}\cdot 33402.2510876 \cdot 2}{2\cdot\sqrt{63964006749578125}}\cr\approx \mathstrut & 0.823355461988 \end{aligned}\]

# self-contained SageMath code snippet to compute the analytic class number formula
 
x = polygen(QQ); K.<a> = NumberField(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428)
 
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))))
 
# self-contained Pari/GP code snippet to compute the analytic class number formula
 
K = bnfinit(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428, 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)))]
 
/* self-contained Magma code snippet to compute the analytic class number formula */
 
Qx<x> := PolynomialRing(QQ); K<a> := NumberField(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428);
 
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)));
 
# self-contained Oscar code snippet to compute the analytic class number formula
 
Qx, x = PolynomialRing(QQ); K, a = NumberField(x^10 - 3*x^9 + x^8 - x^7 + 6*x^6 + 157*x^5 - 1073*x^4 + 2815*x^3 - 3613*x^2 + 1961*x + 428);
 
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

$S_6$ (as 10T32):

sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
magma: G = GaloisGroup(K);
 
oscar: G, Gtx = galois_group(K); G, transitive_group_identification(G)
 
A non-solvable group of order 720
The 11 conjugacy class representatives for $S_{6}$
Character table for $S_{6}$

Intermediate fields

The extension is primitive: there are no intermediate fields between this field and $\Q$.
sage: K.subfields()[1:-1]
 
gp: L = nfsubfields(K); L[2..length(b)]
 
magma: L := Subfields(K); L[2..#L];
 
oscar: subfields(K)[2:end-1]
 

Sibling fields

Degree 6 siblings: 6.2.399925.1, 6.2.2558560269983125.1
Degree 12 siblings: data not computed
Degree 15 siblings: data not computed
Degree 20 siblings: data not computed
Degree 30 siblings: data not computed
Degree 36 sibling: data not computed
Degree 40 siblings: data not computed
Degree 45 sibling: data not computed
Minimal sibling: 6.2.399925.1

Frobenius cycle types

$p$ $2$ $3$ $5$ $7$ $11$ $13$ $17$ $19$ $23$ $29$ $31$ $37$ $41$ $43$ $47$ $53$ $59$
Cycle type ${\href{/padicField/2.6.0.1}{6} }{,}\,{\href{/padicField/2.3.0.1}{3} }{,}\,{\href{/padicField/2.1.0.1}{1} }$ ${\href{/padicField/3.5.0.1}{5} }^{2}$ R ${\href{/padicField/7.4.0.1}{4} }^{2}{,}\,{\href{/padicField/7.1.0.1}{1} }^{2}$ ${\href{/padicField/11.5.0.1}{5} }^{2}$ ${\href{/padicField/13.6.0.1}{6} }{,}\,{\href{/padicField/13.3.0.1}{3} }{,}\,{\href{/padicField/13.1.0.1}{1} }$ R ${\href{/padicField/19.6.0.1}{6} }{,}\,{\href{/padicField/19.3.0.1}{3} }{,}\,{\href{/padicField/19.1.0.1}{1} }$ ${\href{/padicField/23.3.0.1}{3} }^{3}{,}\,{\href{/padicField/23.1.0.1}{1} }$ ${\href{/padicField/29.6.0.1}{6} }{,}\,{\href{/padicField/29.3.0.1}{3} }{,}\,{\href{/padicField/29.1.0.1}{1} }$ ${\href{/padicField/31.5.0.1}{5} }^{2}$ ${\href{/padicField/37.6.0.1}{6} }{,}\,{\href{/padicField/37.3.0.1}{3} }{,}\,{\href{/padicField/37.1.0.1}{1} }$ ${\href{/padicField/41.6.0.1}{6} }{,}\,{\href{/padicField/41.3.0.1}{3} }{,}\,{\href{/padicField/41.1.0.1}{1} }$ ${\href{/padicField/43.4.0.1}{4} }^{2}{,}\,{\href{/padicField/43.1.0.1}{1} }^{2}$ ${\href{/padicField/47.4.0.1}{4} }^{2}{,}\,{\href{/padicField/47.1.0.1}{1} }^{2}$ ${\href{/padicField/53.3.0.1}{3} }^{3}{,}\,{\href{/padicField/53.1.0.1}{1} }$ ${\href{/padicField/59.6.0.1}{6} }{,}\,{\href{/padicField/59.3.0.1}{3} }{,}\,{\href{/padicField/59.1.0.1}{1} }$

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

# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Sage:
 
p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
\\ to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Pari:
 
p = 7; pfac = idealprimedec(K, p); vector(length(pfac), j, [pfac[j][3], pfac[j][4]])
 
// to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7 in Magma:
 
p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];
 
# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ 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
\(5\) Copy content Toggle raw display $\Q_{5}$$x + 3$$1$$1$$0$Trivial$[\ ]$
5.9.6.1$x^{9} + 9 x^{7} + 24 x^{6} + 27 x^{5} + 9 x^{4} - 186 x^{3} + 216 x^{2} - 504 x + 647$$3$$3$$6$$S_3\times C_3$$[\ ]_{3}^{6}$
\(17\) Copy content Toggle raw display 17.2.1.2$x^{2} + 51$$2$$1$$1$$C_2$$[\ ]_{2}$
17.4.0.1$x^{4} + 7 x^{2} + 10 x + 3$$1$$4$$0$$C_4$$[\ ]^{4}$
17.4.2.2$x^{4} - 272 x^{2} + 867$$2$$2$$2$$C_4$$[\ ]_{2}^{2}$
\(941\) Copy content Toggle raw display $\Q_{941}$$x$$1$$1$$0$Trivial$[\ ]$
Deg $3$$1$$3$$0$$C_3$$[\ ]^{3}$
Deg $6$$2$$3$$3$