Normalized defining polynomial
\( x^{7} - x^{6} - 282x^{5} - 1345x^{4} + 5370x^{3} + 30042x^{2} - 14893x - 115169 \)
Invariants
Degree: | $7$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
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Signature: | $[7, 0]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
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Discriminant: | \(81905390937410041\) \(\medspace = 659^{6}\) | sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
| |
Root discriminant: | \(260.73\) | 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: | $659^{6/7}\approx 260.7278949189025$ | ||
Ramified primes: | \(659\) | sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
magma: PrimeDivisors(Discriminant(OK));
oscar: prime_divisors(discriminant((OK)))
| |
Discriminant root field: | \(\Q\) | ||
$\card{ \Gal(K/\Q) }$: | $7$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
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This field is Galois and abelian over $\Q$. | |||
Conductor: | \(659\) | ||
Dirichlet character group: | $\lbrace$$\chi_{659}(144,·)$, $\chi_{659}(1,·)$, $\chi_{659}(307,·)$, $\chi_{659}(389,·)$, $\chi_{659}(55,·)$, $\chi_{659}(410,·)$, $\chi_{659}(12,·)$$\rbrace$ | ||
This is not a CM field. |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $\frac{1}{53}a^{5}-\frac{24}{53}a^{4}+\frac{5}{53}a^{3}+\frac{24}{53}a^{2}-\frac{5}{53}a$, $\frac{1}{1032220633}a^{6}+\frac{6478640}{1032220633}a^{5}-\frac{268540694}{1032220633}a^{4}+\frac{49142828}{1032220633}a^{3}+\frac{257734100}{1032220633}a^{2}+\frac{336801606}{1032220633}a-\frac{158939}{475021}$
Monogenic: | No | |
Index: | $1$ | |
Inessential primes: | None |
Class group and class number
Trivial group, which has order $1$
Unit group
Rank: | $6$ | sage: UK.rank()
gp: K.fu
magma: UnitRank(K);
oscar: rank(UK)
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Torsion generator: | \( -1 \) (order $2$) | 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: | $\frac{383623}{1032220633}a^{6}+\frac{1738788}{1032220633}a^{5}-\frac{118763866}{1032220633}a^{4}-\frac{1054424874}{1032220633}a^{3}+\frac{891036565}{1032220633}a^{2}+\frac{26422830093}{1032220633}a+\frac{22415508}{475021}$, $\frac{56332227}{1032220633}a^{6}+\frac{65865963}{1032220633}a^{5}-\frac{15758753143}{1032220633}a^{4}-\frac{109862255963}{1032220633}a^{3}+\frac{68239556769}{1032220633}a^{2}+\frac{34803169714}{19475861}a+\frac{1415451911}{475021}$, $\frac{16374336}{1032220633}a^{6}-\frac{87042663}{1032220633}a^{5}-\frac{4252340873}{1032220633}a^{4}-\frac{3613978205}{1032220633}a^{3}+\frac{106127465247}{1032220633}a^{2}+\frac{40619958890}{1032220633}a-\frac{213520225}{475021}$, $\frac{24023}{25176113}a^{6}+\frac{13259}{25176113}a^{5}-\frac{7371023}{25176113}a^{4}-\frac{38610453}{25176113}a^{3}+\frac{218049521}{25176113}a^{2}+\frac{654368976}{25176113}a-\frac{34511334}{475021}$, $\frac{19179899}{1032220633}a^{6}-\frac{188543118}{1032220633}a^{5}-\frac{4472221920}{1032220633}a^{4}+\frac{15782974786}{1032220633}a^{3}+\frac{147440321668}{1032220633}a^{2}-\frac{41504618308}{1032220633}a-\frac{288337996}{475021}$, $\frac{90413}{24005131}a^{6}-\frac{452481}{24005131}a^{5}-\frac{23432205}{24005131}a^{4}-\frac{29845438}{24005131}a^{3}+\frac{551803727}{24005131}a^{2}+\frac{637550473}{24005131}a-\frac{1407283}{11047}$ | 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: | \( 1395957.12953 \) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{7}\cdot(2\pi)^{0}\cdot 1395957.12953 \cdot 1}{2\cdot\sqrt{81905390937410041}}\cr\approx \mathstrut & 0.312173340220 \end{aligned}\]
Galois group
A cyclic group of order 7 |
The 7 conjugacy class representatives for $C_7$ |
Character table for $C_7$ |
Intermediate fields
The extension is primitive: there are no intermediate fields between this field and $\Q$. |
Frobenius cycle types
$p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cycle type | ${\href{/padicField/2.7.0.1}{7} }$ | ${\href{/padicField/3.7.0.1}{7} }$ | ${\href{/padicField/5.7.0.1}{7} }$ | ${\href{/padicField/7.7.0.1}{7} }$ | ${\href{/padicField/11.7.0.1}{7} }$ | ${\href{/padicField/13.7.0.1}{7} }$ | ${\href{/padicField/17.7.0.1}{7} }$ | ${\href{/padicField/19.7.0.1}{7} }$ | ${\href{/padicField/23.7.0.1}{7} }$ | ${\href{/padicField/29.7.0.1}{7} }$ | ${\href{/padicField/31.1.0.1}{1} }^{7}$ | ${\href{/padicField/37.7.0.1}{7} }$ | ${\href{/padicField/41.1.0.1}{1} }^{7}$ | ${\href{/padicField/43.1.0.1}{1} }^{7}$ | ${\href{/padicField/47.1.0.1}{1} }^{7}$ | ${\href{/padicField/53.1.0.1}{1} }^{7}$ | ${\href{/padicField/59.7.0.1}{7} }$ |
Cycle lengths which are repeated in a cycle type are indicated by exponents.
Local algebras for ramified primes
$p$ | Label | Polynomial | $e$ | $f$ | $c$ | Galois group | Slope content |
---|---|---|---|---|---|---|---|
\(659\) | Deg $7$ | $7$ | $1$ | $6$ |