magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![33847620389, 0, 2142254455, 0, 37964003, 0, 274604, 0, 869, 0, 1]);
sage: x = polygen(QQ); K.<a> = NumberField(x^10 + 869*x^8 + 274604*x^6 + 37964003*x^4 + 2142254455*x^2 + 33847620389)
gp: K = bnfinit(x^10 + 869*x^8 + 274604*x^6 + 37964003*x^4 + 2142254455*x^2 + 33847620389, 1)
Normalized defining polynomial
\( x^{10} + 869 x^{8} + 274604 x^{6} + 37964003 x^{4} + 2142254455 x^{2} + 33847620389 \)
magma: DefiningPolynomial(K);
sage: K.defining_polynomial()
gp: K.pol
Invariants
| Degree: | $10$ | magma: Degree(K);
sage: K.degree()
gp: poldegree(K.pol)
| |
| Signature: | $[0, 5]$ | magma: Signature(K);
sage: K.signature()
gp: K.sign
| |
| Discriminant: | \(-7429670943845196502016=-\,2^{10}\cdot 11^{9}\cdot 79^{5}\) | magma: Discriminant(Integers(K));
sage: K.disc()
gp: K.disc
| |
| Root discriminant: | $153.85$ | 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: | $2, 11, 79$ | magma: PrimeDivisors(Discriminant(Integers(K)));
sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
| |
| This field is Galois and abelian over $\Q$. | |||
| Conductor: | \(3476=2^{2}\cdot 11\cdot 79\) | ||
| Dirichlet character group: | $\lbrace$$\chi_{3476}(1,·)$, $\chi_{3476}(1897,·)$, $\chi_{3476}(1579,·)$, $\chi_{3476}(3475,·)$, $\chi_{3476}(949,·)$, $\chi_{3476}(3159,·)$, $\chi_{3476}(3161,·)$, $\chi_{3476}(315,·)$, $\chi_{3476}(317,·)$, $\chi_{3476}(2527,·)$$\rbrace$ | ||
| This is a CM field. | |||
Integral basis (with respect to field generator \(a\))
$1$, $a$, $\frac{1}{79} a^{2}$, $\frac{1}{79} a^{3}$, $\frac{1}{6241} a^{4}$, $\frac{1}{6241} a^{5}$, $\frac{1}{493039} a^{6}$, $\frac{1}{493039} a^{7}$, $\frac{1}{38950081} a^{8}$, $\frac{1}{38950081} a^{9}$
magma: IntegralBasis(K);
sage: K.integral_basis()
gp: K.zk
Class group and class number
$C_{2}\times C_{64016}$, which has order $128032$ (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: | $4$ | 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: | \( \frac{1}{79} a^{2} + 2 \), \( \frac{1}{38950081} a^{8} + \frac{9}{493039} a^{6} + \frac{27}{6241} a^{4} + \frac{30}{79} a^{2} + 9 \), \( \frac{1}{38950081} a^{8} + \frac{9}{493039} a^{6} + \frac{26}{6241} a^{4} + \frac{26}{79} a^{2} + 7 \), \( \frac{1}{6241} a^{4} + \frac{4}{79} a^{2} + 2 \) (assuming GRH) | magma: [K!f(g): g in Generators(UK)];
sage: UK.fundamental_units()
gp: K.fu
| |
| Regulator: | \( 26.1711060094 \) (assuming GRH) | magma: Regulator(K);
sage: K.regulator()
gp: K.reg
|
Galois group
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
| \(\Q(\sqrt{-869}) \), \(\Q(\zeta_{11})^+\) |
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 | R | ${\href{/LocalNumberField/3.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/5.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/7.10.0.1}{10} }$ | R | ${\href{/LocalNumberField/13.10.0.1}{10} }$ | ${\href{/LocalNumberField/17.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/19.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/23.2.0.1}{2} }^{5}$ | ${\href{/LocalNumberField/29.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/31.10.0.1}{10} }$ | ${\href{/LocalNumberField/37.10.0.1}{10} }$ | ${\href{/LocalNumberField/41.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/43.2.0.1}{2} }^{5}$ | ${\href{/LocalNumberField/47.5.0.1}{5} }^{2}$ | ${\href{/LocalNumberField/53.10.0.1}{10} }$ | ${\href{/LocalNumberField/59.5.0.1}{5} }^{2}$ |
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
| $p$ | Label | Polynomial | $e$ | $f$ | $c$ | Galois group | Slope content |
|---|---|---|---|---|---|---|---|
| $2$ | 2.10.10.11 | $x^{10} - x^{8} + 3 x^{6} + x^{2} - 3$ | $2$ | $5$ | $10$ | $C_{10}$ | $[2]^{5}$ |
| $11$ | 11.10.9.1 | $x^{10} - 11$ | $10$ | $1$ | $9$ | $C_{10}$ | $[\ ]_{10}$ |
| $79$ | 79.10.5.2 | $x^{10} - 38950081 x^{2} + 49232902384$ | $2$ | $5$ | $5$ | $C_{10}$ | $[\ ]_{2}^{5}$ |