Normalized defining polynomial
\( x^{7} - x^{6} - 324x^{5} + 1483x^{4} + 20876x^{3} - 129744x^{2} + 36999x + 54027 \)
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: | \(188180785490436649\) \(\medspace = 757^{6}\) | sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
| |
Root discriminant: | \(293.63\) | 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: | $757^{6/7}\approx 293.6273246706745$ | ||
Ramified primes: | \(757\) | 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: | \(757\) | ||
Dirichlet character group: | $\lbrace$$\chi_{757}(1,·)$, $\chi_{757}(453,·)$, $\chi_{757}(630,·)$, $\chi_{757}(232,·)$, $\chi_{757}(59,·)$, $\chi_{757}(77,·)$, $\chi_{757}(62,·)$$\rbrace$ | ||
This is not a CM field. |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $\frac{1}{3}a^{3}-\frac{1}{3}a$, $\frac{1}{3}a^{4}-\frac{1}{3}a^{2}$, $\frac{1}{477}a^{5}-\frac{50}{477}a^{4}-\frac{40}{477}a^{3}+\frac{125}{477}a^{2}-\frac{70}{159}a-\frac{2}{53}$, $\frac{1}{106460199}a^{6}-\frac{39784}{106460199}a^{5}-\frac{5618227}{35486733}a^{4}-\frac{79061}{106460199}a^{3}-\frac{47831770}{106460199}a^{2}-\frac{9769132}{35486733}a+\frac{1578096}{11828911}$
Monogenic: | No | |
Index: | $81$ | |
Inessential primes: | $3$ |
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: | $\frac{43574327}{106460199}a^{6}+\frac{4101526}{35486733}a^{5}-\frac{256969115}{2008683}a^{4}+\frac{16682286833}{35486733}a^{3}+\frac{839378450828}{106460199}a^{2}-\frac{532153682354}{11828911}a+\frac{395886904931}{11828911}$, $\frac{19550128}{35486733}a^{6}-\frac{1069955870}{106460199}a^{5}-\frac{569905382}{106460199}a^{4}+\frac{97109655968}{106460199}a^{3}-\frac{450035190610}{106460199}a^{2}+\frac{41139713165}{35486733}a+\frac{19808539819}{11828911}$, $\frac{1429201}{11828911}a^{6}+\frac{72855469}{106460199}a^{5}-\frac{3249210818}{106460199}a^{4}+\frac{1686960383}{106460199}a^{3}+\frac{188303941166}{106460199}a^{2}-\frac{246764115811}{35486733}a+\frac{56619230137}{11828911}$, $\frac{53102665}{106460199}a^{6}+\frac{65108860}{106460199}a^{5}-\frac{16607380057}{106460199}a^{4}+\frac{45624212771}{106460199}a^{3}+\frac{121818731631}{11828911}a^{2}-\frac{542845212457}{11828911}a-\frac{303055026751}{11828911}$, $\frac{1333967}{106460199}a^{6}+\frac{9574708}{106460199}a^{5}-\frac{82480060}{35486733}a^{4}-\frac{776893954}{106460199}a^{3}+\frac{12120633712}{106460199}a^{2}-\frac{1367059595}{35486733}a-\frac{579535369}{11828911}$, $\frac{140766}{11828911}a^{6}-\frac{13405093}{106460199}a^{5}-\frac{284851267}{106460199}a^{4}+\frac{4657644829}{106460199}a^{3}-\frac{18155099210}{106460199}a^{2}+\frac{1879962445}{35486733}a+\frac{885381776}{11828911}$ | 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: | \( 31817260.5598 \) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{7}\cdot(2\pi)^{0}\cdot 31817260.5598 \cdot 1}{2\cdot\sqrt{188180785490436649}}\cr\approx \mathstrut & 4.69413007730 \end{aligned}\]
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 | ${\href{/padicField/2.7.0.1}{7} }$ | ${\href{/padicField/3.1.0.1}{1} }^{7}$ | ${\href{/padicField/5.7.0.1}{7} }$ | ${\href{/padicField/7.7.0.1}{7} }$ | ${\href{/padicField/11.7.0.1}{7} }$ | ${\href{/padicField/13.7.0.1}{7} }$ | ${\href{/padicField/17.7.0.1}{7} }$ | ${\href{/padicField/19.7.0.1}{7} }$ | ${\href{/padicField/23.1.0.1}{1} }^{7}$ | ${\href{/padicField/29.1.0.1}{1} }^{7}$ | ${\href{/padicField/31.7.0.1}{7} }$ | ${\href{/padicField/37.7.0.1}{7} }$ | ${\href{/padicField/41.7.0.1}{7} }$ | ${\href{/padicField/43.7.0.1}{7} }$ | ${\href{/padicField/47.7.0.1}{7} }$ | ${\href{/padicField/53.1.0.1}{1} }^{7}$ | ${\href{/padicField/59.7.0.1}{7} }$ |
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 |
---|---|---|---|---|---|---|---|
\(757\) | Deg $7$ | $7$ | $1$ | $6$ |