Properties

Label 10.0.38060880859375.1
Degree $10$
Signature $[0, 5]$
Discriminant $-3.806\times 10^{13}$
Root discriminant \(22.81\)
Ramified primes $5,11$
Class number $1$
Class group trivial
Galois group $F_5 \wr C_2$ (as 10T33)

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Show commands: Magma / Oscar / PariGP / SageMath

Normalized defining polynomial

sage: x = polygen(QQ); K.<a> = NumberField(x^10 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5)
 
gp: K = bnfinit(y^10 + 6*y^8 - 16*y^7 + 36*y^6 - 73*y^5 + 145*y^4 - 170*y^3 + 110*y^2 - 35*y + 5, 1)
 
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^10 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5);
 
oscar: Qx, x = PolynomialRing(QQ); K, a = NumberField(x^10 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5)
 

\( x^{10} + 6x^{8} - 16x^{7} + 36x^{6} - 73x^{5} + 145x^{4} - 170x^{3} + 110x^{2} - 35x + 5 \) 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:  $[0, 5]$
sage: K.signature()
 
gp: K.sign
 
magma: Signature(K);
 
oscar: signature(K)
 
Discriminant:   \(-38060880859375\) \(\medspace = -\,5^{9}\cdot 11^{7}\) 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:  \(22.81\)
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))
 
Ramified primes:   \(5\), \(11\) 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:  \(\Q(\sqrt{-55}) \)
$\card{ \Aut(K/\Q) }$:  $1$
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 \(a\))

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $\frac{1}{11}a^{5}+\frac{3}{11}a^{3}+\frac{3}{11}a^{2}-\frac{3}{11}a+\frac{4}{11}$, $\frac{1}{11}a^{6}+\frac{3}{11}a^{4}+\frac{3}{11}a^{3}-\frac{3}{11}a^{2}+\frac{4}{11}a$, $\frac{1}{11}a^{7}+\frac{3}{11}a^{4}-\frac{1}{11}a^{3}-\frac{5}{11}a^{2}-\frac{2}{11}a-\frac{1}{11}$, $\frac{1}{11}a^{8}-\frac{1}{11}a^{4}-\frac{3}{11}a^{3}-\frac{3}{11}a-\frac{1}{11}$, $\frac{1}{11}a^{9}-\frac{3}{11}a^{4}+\frac{3}{11}a^{3}-\frac{4}{11}a+\frac{4}{11}$ 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

Trivial group, which has order $1$

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:  $4$
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:   $\frac{3}{11}a^{8}-\frac{2}{11}a^{7}-\frac{19}{11}a^{6}+\frac{36}{11}a^{5}-\frac{82}{11}a^{4}+\frac{161}{11}a^{3}-\frac{320}{11}a^{2}+\frac{280}{11}a-\frac{104}{11}$, $\frac{4}{11}a^{9}-\frac{8}{11}a^{8}-\frac{32}{11}a^{7}+\frac{10}{11}a^{6}-\frac{67}{11}a^{5}+\frac{97}{11}a^{4}-\frac{204}{11}a^{3}-\frac{60}{11}a^{2}+\frac{92}{11}a-\frac{24}{11}$, $\frac{4}{11}a^{9}+\frac{1}{11}a^{8}-\frac{20}{11}a^{7}+\frac{75}{11}a^{6}-\frac{131}{11}a^{5}+27a^{4}-\frac{559}{11}a^{3}+\frac{659}{11}a^{2}-\frac{277}{11}a+\frac{51}{11}$, $\frac{45}{11}a^{9}-\frac{24}{11}a^{8}-\frac{277}{11}a^{7}+\frac{577}{11}a^{6}-\frac{1274}{11}a^{5}+\frac{2544}{11}a^{4}-\frac{5012}{11}a^{3}+\frac{4687}{11}a^{2}-\frac{1864}{11}a+\frac{96}{11}$ 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:  \( 1444.5760423293254 \)
sage: K.regulator()
 
gp: K.reg
 
magma: Regulator(K);
 
oscar: regulator(K)
 

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{5}\cdot 1444.5760423293254 \cdot 1}{2\cdot\sqrt{38060880859375}}\cr\approx \mathstrut & 1.14649017294204 \end{aligned}\]

# self-contained SageMath code snippet to compute the analytic class number formula
 
x = polygen(QQ); K.<a> = NumberField(x^10 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5)
 
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 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5, 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 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5);
 
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 + 6*x^8 - 16*x^7 + 36*x^6 - 73*x^5 + 145*x^4 - 170*x^3 + 110*x^2 - 35*x + 5);
 
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

$F_5\wr C_2$ (as 10T33):

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 solvable group of order 800
The 20 conjugacy class representatives for $F_5 \wr C_2$
Character table for $F_5 \wr C_2$

Intermediate fields

\(\Q(\sqrt{-11}) \)

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

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 20 siblings: deg 20, deg 20, deg 20, deg 20
Degree 25 sibling: deg 25
Degree 40 siblings: deg 40, deg 40, deg 40, deg 40, deg 40, deg 40, deg 40, deg 40, some 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 ${\href{/padicField/2.8.0.1}{8} }{,}\,{\href{/padicField/2.2.0.1}{2} }$ ${\href{/padicField/3.4.0.1}{4} }{,}\,{\href{/padicField/3.2.0.1}{2} }^{2}{,}\,{\href{/padicField/3.1.0.1}{1} }^{2}$ R ${\href{/padicField/7.8.0.1}{8} }{,}\,{\href{/padicField/7.2.0.1}{2} }$ R ${\href{/padicField/13.8.0.1}{8} }{,}\,{\href{/padicField/13.2.0.1}{2} }$ ${\href{/padicField/17.8.0.1}{8} }{,}\,{\href{/padicField/17.2.0.1}{2} }$ ${\href{/padicField/19.10.0.1}{10} }$ ${\href{/padicField/23.5.0.1}{5} }{,}\,{\href{/padicField/23.4.0.1}{4} }{,}\,{\href{/padicField/23.1.0.1}{1} }$ ${\href{/padicField/29.10.0.1}{10} }$ ${\href{/padicField/31.4.0.1}{4} }^{2}{,}\,{\href{/padicField/31.1.0.1}{1} }^{2}$ ${\href{/padicField/37.5.0.1}{5} }{,}\,{\href{/padicField/37.4.0.1}{4} }{,}\,{\href{/padicField/37.1.0.1}{1} }$ ${\href{/padicField/41.4.0.1}{4} }^{2}{,}\,{\href{/padicField/41.2.0.1}{2} }$ ${\href{/padicField/43.8.0.1}{8} }{,}\,{\href{/padicField/43.2.0.1}{2} }$ ${\href{/padicField/47.4.0.1}{4} }{,}\,{\href{/padicField/47.2.0.1}{2} }^{2}{,}\,{\href{/padicField/47.1.0.1}{1} }^{2}$ ${\href{/padicField/53.5.0.1}{5} }{,}\,{\href{/padicField/53.4.0.1}{4} }{,}\,{\href{/padicField/53.1.0.1}{1} }$ ${\href{/padicField/59.5.0.1}{5} }{,}\,{\href{/padicField/59.2.0.1}{2} }^{2}{,}\,{\href{/padicField/59.1.0.1}{1} }$

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$Trivial$[\ ]$
5.4.2.2$x^{4} - 20 x^{2} + 50$$2$$2$$2$$C_4$$[\ ]_{2}^{2}$
5.5.7.4$x^{5} + 5 x^{3} + 5$$5$$1$$7$$F_5$$[7/4]_{4}$
\(11\) Copy content Toggle raw display 11.2.1.2$x^{2} + 11$$2$$1$$1$$C_2$$[\ ]_{2}$
11.8.6.1$x^{8} - 110 x^{4} - 16819$$4$$2$$6$$Q_8$$[\ ]_{4}^{2}$