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Properties

Label 10.10.875463320250981.1
Degree $10$
Signature $[10, 0]$
Discriminant $3^{5}\cdot 7^{5}\cdot 11^{8}$
Root discriminant $31.20$
Ramified primes $3, 7, 11$
Class number $1$
Class group Trivial
Galois group $C_{10}$ (as 10T1)

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Show commands for: Magma / SageMath / Pari/GP

magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![-131, -1125, 937, 1807, -1076, -660, 310, 80, -31, -3, 1]);
 
sage: x = polygen(QQ); K.<a> = NumberField(x^10 - 3*x^9 - 31*x^8 + 80*x^7 + 310*x^6 - 660*x^5 - 1076*x^4 + 1807*x^3 + 937*x^2 - 1125*x - 131)
 
gp: K = bnfinit(x^10 - 3*x^9 - 31*x^8 + 80*x^7 + 310*x^6 - 660*x^5 - 1076*x^4 + 1807*x^3 + 937*x^2 - 1125*x - 131, 1)
 

Normalized defining polynomial

\( x^{10} - 3 x^{9} - 31 x^{8} + 80 x^{7} + 310 x^{6} - 660 x^{5} - 1076 x^{4} + 1807 x^{3} + 937 x^{2} - 1125 x - 131 \)

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

Invariants

Degree:  $10$
magma: Degree(K);
 
sage: K.degree()
 
gp: poldegree(K.pol)
 
Signature:  $[10, 0]$
magma: Signature(K);
 
sage: K.signature()
 
gp: K.sign
 
Discriminant:  \(875463320250981=3^{5}\cdot 7^{5}\cdot 11^{8}\)
magma: Discriminant(Integers(K));
 
sage: K.disc()
 
gp: K.disc
 
Root discriminant:  $31.20$
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:  $3, 7, 11$
magma: PrimeDivisors(Discriminant(Integers(K)));
 
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
This field is Galois and abelian over $\Q$.
Conductor:  \(231=3\cdot 7\cdot 11\)
Dirichlet character group:    $\lbrace$$\chi_{231}(64,·)$, $\chi_{231}(1,·)$, $\chi_{231}(104,·)$, $\chi_{231}(169,·)$, $\chi_{231}(146,·)$, $\chi_{231}(20,·)$, $\chi_{231}(148,·)$, $\chi_{231}(188,·)$, $\chi_{231}(125,·)$, $\chi_{231}(190,·)$$\rbrace$
This is not a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $\frac{1}{1104483768763} a^{9} + \frac{252429145830}{1104483768763} a^{8} + \frac{5017891652}{1104483768763} a^{7} + \frac{520043876510}{1104483768763} a^{6} - \frac{325229200974}{1104483768763} a^{5} + \frac{255538064452}{1104483768763} a^{4} + \frac{258506870592}{1104483768763} a^{3} + \frac{323813603881}{1104483768763} a^{2} + \frac{208028550842}{1104483768763} a + \frac{339025259594}{1104483768763}$

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

Class group and class number

Trivial group, which has order $1$

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

Unit group

magma: UK, f := UnitGroup(K);
 
sage: UK = K.unit_group()
 
Rank:  $9$
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
magma: [K!f(g): g in Generators(UK)];
 
sage: UK.fundamental_units()
 
gp: K.fu
 
Regulator:  \( 11461.054296 \)
magma: Regulator(K);
 
sage: K.regulator()
 
gp: K.reg
 

Galois group

$C_{10}$ (as 10T1):

magma: GaloisGroup(K);
 
sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
A cyclic group of order 10
The 10 conjugacy class representatives for $C_{10}$
Character table for $C_{10}$

Intermediate fields

\(\Q(\sqrt{21}) \), \(\Q(\zeta_{11})^+\)

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 ${\href{/LocalNumberField/2.10.0.1}{10} }$ R ${\href{/LocalNumberField/5.5.0.1}{5} }^{2}$ R R ${\href{/LocalNumberField/13.10.0.1}{10} }$ ${\href{/LocalNumberField/17.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/19.10.0.1}{10} }$ ${\href{/LocalNumberField/23.2.0.1}{2} }^{5}$ ${\href{/LocalNumberField/29.10.0.1}{10} }$ ${\href{/LocalNumberField/31.10.0.1}{10} }$ ${\href{/LocalNumberField/37.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/41.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/43.1.0.1}{1} }^{10}$ ${\href{/LocalNumberField/47.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/53.10.0.1}{10} }$ ${\href{/LocalNumberField/59.5.0.1}{5} }^{2}$

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
$3$3.10.5.1$x^{10} - 18 x^{6} + 81 x^{2} - 243$$2$$5$$5$$C_{10}$$[\ ]_{2}^{5}$
$7$7.10.5.2$x^{10} - 2401 x^{2} + 67228$$2$$5$$5$$C_{10}$$[\ ]_{2}^{5}$
$11$11.10.8.5$x^{10} - 2321 x^{5} + 2033647$$5$$2$$8$$C_{10}$$[\ ]_{5}^{2}$

Artin representations

Label Dimension Conductor Defining polynomial of Artin field $G$ Ind $\chi(c)$
* 1.1.1t1.1c1$1$ $1$ $x$ $C_1$ $1$ $1$
* 1.3_7.2t1.1c1$1$ $ 3 \cdot 7 $ $x^{2} - x - 5$ $C_2$ (as 2T1) $1$ $1$
* 1.11.5t1.1c1$1$ $ 11 $ $x^{5} - x^{4} - 4 x^{3} + 3 x^{2} + 3 x - 1$ $C_5$ (as 5T1) $0$ $1$
* 1.3_7_11.10t1.2c1$1$ $ 3 \cdot 7 \cdot 11 $ $x^{10} - 3 x^{9} - 31 x^{8} + 80 x^{7} + 310 x^{6} - 660 x^{5} - 1076 x^{4} + 1807 x^{3} + 937 x^{2} - 1125 x - 131$ $C_{10}$ (as 10T1) $0$ $1$
* 1.11.5t1.1c2$1$ $ 11 $ $x^{5} - x^{4} - 4 x^{3} + 3 x^{2} + 3 x - 1$ $C_5$ (as 5T1) $0$ $1$
* 1.3_7_11.10t1.2c2$1$ $ 3 \cdot 7 \cdot 11 $ $x^{10} - 3 x^{9} - 31 x^{8} + 80 x^{7} + 310 x^{6} - 660 x^{5} - 1076 x^{4} + 1807 x^{3} + 937 x^{2} - 1125 x - 131$ $C_{10}$ (as 10T1) $0$ $1$
* 1.11.5t1.1c3$1$ $ 11 $ $x^{5} - x^{4} - 4 x^{3} + 3 x^{2} + 3 x - 1$ $C_5$ (as 5T1) $0$ $1$
* 1.3_7_11.10t1.2c3$1$ $ 3 \cdot 7 \cdot 11 $ $x^{10} - 3 x^{9} - 31 x^{8} + 80 x^{7} + 310 x^{6} - 660 x^{5} - 1076 x^{4} + 1807 x^{3} + 937 x^{2} - 1125 x - 131$ $C_{10}$ (as 10T1) $0$ $1$
* 1.11.5t1.1c4$1$ $ 11 $ $x^{5} - x^{4} - 4 x^{3} + 3 x^{2} + 3 x - 1$ $C_5$ (as 5T1) $0$ $1$
* 1.3_7_11.10t1.2c4$1$ $ 3 \cdot 7 \cdot 11 $ $x^{10} - 3 x^{9} - 31 x^{8} + 80 x^{7} + 310 x^{6} - 660 x^{5} - 1076 x^{4} + 1807 x^{3} + 937 x^{2} - 1125 x - 131$ $C_{10}$ (as 10T1) $0$ $1$

Data is given for all irreducible representations of the Galois group for the Galois closure of this field. Those marked with * are summands in the permutation representation coming from this field. Representations which appear with multiplicity greater than one are indicated by exponents on the *.