Normalized defining polynomial
\( x^{28} - 4x + 4 \)
Invariants
Degree: | $28$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
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Signature: | $[0, 14]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
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Discriminant: | \(2105327011242178848592130424466919810093585268736\) \(\medspace = 2^{28}\cdot 78\!\cdots\!81\) | sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
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Root discriminant: | \(53.19\) | 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))
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Galois root discriminant: | not computed | ||
Ramified primes: | \(2\), \(78429\!\cdots\!60381\) | sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
magma: PrimeDivisors(Discriminant(OK));
oscar: prime_divisors(discriminant((OK)))
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Discriminant root field: | $\Q(\sqrt{78429\!\cdots\!60381}$) | ||
$\card{ \Aut(K/\Q) }$: | $1$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
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This field is not Galois over $\Q$. | |||
This is not a CM field. |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $\frac{1}{2}a^{14}$, $\frac{1}{2}a^{15}$, $\frac{1}{2}a^{16}$, $\frac{1}{2}a^{17}$, $\frac{1}{2}a^{18}$, $\frac{1}{2}a^{19}$, $\frac{1}{2}a^{20}$, $\frac{1}{2}a^{21}$, $\frac{1}{2}a^{22}$, $\frac{1}{2}a^{23}$, $\frac{1}{2}a^{24}$, $\frac{1}{2}a^{25}$, $\frac{1}{2}a^{26}$, $\frac{1}{2}a^{27}$
Monogenic: | Not computed | |
Index: | $1$ | |
Inessential primes: | None |
Class group and class number
Trivial group, which has order $1$ (assuming GRH)
Unit group
Rank: | $13$ | 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)
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Fundamental units: | $\frac{1}{2}a^{14}$, $\frac{1}{2}a^{14}+a^{3}$, $\frac{1}{2}a^{27}+\frac{1}{2}a^{25}+\frac{1}{2}a^{18}-\frac{1}{2}a^{17}+\frac{1}{2}a^{16}-\frac{1}{2}a^{15}+a^{9}-a^{8}+a^{7}-a^{6}-1$, $\frac{1}{2}a^{16}+\frac{1}{2}a^{15}-a^{3}-a^{2}+1$, $\frac{1}{2}a^{22}+\frac{1}{2}a^{21}-\frac{1}{2}a^{19}+\frac{1}{2}a^{17}+\frac{1}{2}a^{16}-\frac{1}{2}a^{14}+a^{9}+a^{8}-a^{6}-a^{5}+a^{4}+a^{3}-a$, $\frac{1}{2}a^{27}+a^{26}+\frac{1}{2}a^{25}+\frac{1}{2}a^{23}-\frac{1}{2}a^{19}-\frac{1}{2}a^{18}-a^{15}-\frac{1}{2}a^{14}-a^{13}-a^{12}+a^{11}+a^{8}+a^{6}+a^{5}-a^{3}+a^{2}+a-2$, $a^{27}+a^{26}+\frac{1}{2}a^{25}-\frac{1}{2}a^{24}-a^{23}-\frac{3}{2}a^{22}-\frac{3}{2}a^{21}-a^{20}-\frac{1}{2}a^{19}+\frac{1}{2}a^{18}+\frac{1}{2}a^{17}+a^{16}+a^{15}+\frac{1}{2}a^{14}+a^{13}-a^{10}-a^{9}-a^{8}-2a^{7}-a^{6}+a^{4}+3a^{3}+2a^{2}+3a-4$, $\frac{1}{2}a^{27}-\frac{1}{2}a^{26}-\frac{1}{2}a^{25}+\frac{1}{2}a^{24}+a^{23}+\frac{1}{2}a^{22}-\frac{1}{2}a^{21}-\frac{3}{2}a^{20}-a^{19}+a^{18}+\frac{3}{2}a^{17}-a^{15}-\frac{1}{2}a^{14}+a^{12}+a^{11}-a^{10}-2a^{9}+a^{8}+3a^{7}+a^{6}-2a^{5}-3a^{4}-2a^{3}+2a^{2}+4a-2$, $a^{20}-2a^{13}+2a^{6}-1$, $a^{27}+a^{26}+a^{25}+a^{24}+a^{23}+a^{22}+a^{21}+\frac{3}{2}a^{20}+\frac{3}{2}a^{19}+a^{18}+a^{17}+a^{16}+a^{15}+a^{14}+a^{13}+a^{12}+a^{11}+a^{10}+a^{9}+a^{8}+a^{5}+a^{4}+a^{3}-3$, $\frac{1}{2}a^{26}-\frac{1}{2}a^{25}-a^{24}+\frac{1}{2}a^{23}-\frac{1}{2}a^{22}+\frac{1}{2}a^{21}+\frac{3}{2}a^{20}-\frac{1}{2}a^{19}+\frac{1}{2}a^{18}-\frac{1}{2}a^{17}-2a^{16}-\frac{3}{2}a^{14}+2a^{12}-a^{11}+2a^{10}-3a^{8}+a^{7}-2a^{6}-a^{5}+4a^{4}-a^{3}+3a^{2}+a-4$, $a^{26}+a^{25}+a^{24}+\frac{3}{2}a^{23}+\frac{3}{2}a^{22}+2a^{21}+\frac{3}{2}a^{20}+\frac{1}{2}a^{19}+a^{18}-a^{16}-\frac{1}{2}a^{15}-\frac{3}{2}a^{14}-a^{13}-a^{12}-2a^{11}-a^{10}-2a^{9}-2a^{8}-a^{6}+2a^{4}+a^{3}+3a^{2}+a$, $a^{26}-\frac{3}{2}a^{24}-\frac{3}{2}a^{21}+\frac{3}{2}a^{20}+\frac{3}{2}a^{19}-\frac{1}{2}a^{18}+\frac{1}{2}a^{17}-\frac{5}{2}a^{15}-a^{13}-a^{12}+3a^{11}+a^{10}-2a^{9}+3a^{8}-a^{7}-5a^{6}+2a^{5}+a^{4}-2a^{3}+5a^{2}+2a-3$ (assuming GRH) | sage: UK.fundamental_units()
gp: K.fu
magma: [K|fUK(g): g in Generators(UK)];
oscar: [K(fUK(a)) for a in gens(UK)]
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Regulator: | \( 11321745362544.66 \) (assuming GRH) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{14}\cdot 11321745362544.66 \cdot 1}{2\cdot\sqrt{2105327011242178848592130424466919810093585268736}}\cr\approx \mathstrut & 0.583098283614363 \end{aligned}\] (assuming GRH)
Galois group
A non-solvable group of order 304888344611713860501504000000 |
The 3718 conjugacy class representatives for $S_{28}$ are not computed |
Character table for $S_{28}$ is not computed |
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 | R | ${\href{/padicField/3.9.0.1}{9} }^{3}{,}\,{\href{/padicField/3.1.0.1}{1} }$ | $19{,}\,{\href{/padicField/5.9.0.1}{9} }$ | $19{,}\,{\href{/padicField/7.6.0.1}{6} }{,}\,{\href{/padicField/7.2.0.1}{2} }{,}\,{\href{/padicField/7.1.0.1}{1} }$ | $25{,}\,{\href{/padicField/11.3.0.1}{3} }$ | $16{,}\,{\href{/padicField/13.5.0.1}{5} }{,}\,{\href{/padicField/13.4.0.1}{4} }{,}\,{\href{/padicField/13.3.0.1}{3} }$ | $25{,}\,{\href{/padicField/17.3.0.1}{3} }$ | ${\href{/padicField/19.14.0.1}{14} }{,}\,{\href{/padicField/19.12.0.1}{12} }{,}\,{\href{/padicField/19.2.0.1}{2} }$ | $19{,}\,{\href{/padicField/23.4.0.1}{4} }{,}\,{\href{/padicField/23.3.0.1}{3} }{,}\,{\href{/padicField/23.2.0.1}{2} }$ | ${\href{/padicField/29.14.0.1}{14} }{,}\,{\href{/padicField/29.7.0.1}{7} }{,}\,{\href{/padicField/29.4.0.1}{4} }{,}\,{\href{/padicField/29.2.0.1}{2} }{,}\,{\href{/padicField/29.1.0.1}{1} }$ | ${\href{/padicField/31.12.0.1}{12} }{,}\,{\href{/padicField/31.9.0.1}{9} }{,}\,{\href{/padicField/31.4.0.1}{4} }{,}\,{\href{/padicField/31.3.0.1}{3} }$ | ${\href{/padicField/37.9.0.1}{9} }{,}\,{\href{/padicField/37.8.0.1}{8} }^{2}{,}\,{\href{/padicField/37.2.0.1}{2} }{,}\,{\href{/padicField/37.1.0.1}{1} }$ | $20{,}\,{\href{/padicField/41.7.0.1}{7} }{,}\,{\href{/padicField/41.1.0.1}{1} }$ | ${\href{/padicField/43.12.0.1}{12} }{,}\,{\href{/padicField/43.11.0.1}{11} }{,}\,{\href{/padicField/43.4.0.1}{4} }{,}\,{\href{/padicField/43.1.0.1}{1} }$ | ${\href{/padicField/47.11.0.1}{11} }{,}\,{\href{/padicField/47.9.0.1}{9} }{,}\,{\href{/padicField/47.3.0.1}{3} }{,}\,{\href{/padicField/47.2.0.1}{2} }^{2}{,}\,{\href{/padicField/47.1.0.1}{1} }$ | $25{,}\,{\href{/padicField/53.3.0.1}{3} }$ | $21{,}\,{\href{/padicField/59.4.0.1}{4} }{,}\,{\href{/padicField/59.2.0.1}{2} }{,}\,{\href{/padicField/59.1.0.1}{1} }$ |
In the table, R denotes a ramified prime. Cycle lengths which are repeated in a cycle type are indicated by exponents.
Local algebras for ramified primes
$p$ | Label | Polynomial | $e$ | $f$ | $c$ | Galois group | Slope content |
---|---|---|---|---|---|---|---|
\(2\) | Deg $28$ | $28$ | $1$ | $28$ | |||
\(784\!\cdots\!381\) | $\Q_{78\!\cdots\!81}$ | $x$ | $1$ | $1$ | $0$ | Trivial | $[\ ]$ |
$\Q_{78\!\cdots\!81}$ | $x$ | $1$ | $1$ | $0$ | Trivial | $[\ ]$ | |
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $24$ | $1$ | $24$ | $0$ | $C_{24}$ | $[\ ]^{24}$ |