Normalized defining polynomial
\( x^{20} - 7x + 7 \)
Invariants
| Degree: | $20$ |
| |
| Signature: | $(0, 10)$ |
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| Discriminant: |
\(1037398203776905299351207857106906772728021\)
\(\medspace = 3\cdot 7^{19}\cdot 59\cdot 1986351023\cdot 258853157374157\)
|
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| Root discriminant: | \(126.12\) |
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| Galois root discriminant: | $3^{1/2}7^{19/20}59^{1/2}1986351023^{1/2}258853157374157^{1/2}\approx 60587705215401.875$ | ||
| Ramified primes: |
\(3\), \(7\), \(59\), \(1986351023\), \(258853157374157\)
|
| |
| Discriminant root field: | $\Q(\sqrt{63706\!\cdots\!25029}$) | ||
| $\Aut(K/\Q)$: | $C_1$ |
| |
| This field is not Galois over $\Q$. | |||
| This is not a CM field. | |||
| This field has no CM subfields. | |||
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $a^{14}$, $a^{15}$, $a^{16}$, $a^{17}$, $a^{18}$, $a^{19}$
| Monogenic: | Yes | |
| Index: | $1$ | |
| Inessential primes: | None |
Class group and class number
| Ideal class group: | $C_{2}$, which has order $2$ (assuming GRH) |
| |
| Narrow class group: | $C_{2}$, which has order $2$ (assuming GRH) |
|
Unit group
| Rank: | $9$ |
| |
| Torsion generator: |
\( -1 \)
(order $2$)
|
| |
| Fundamental units: |
$a-1$, $7a^{19}-16a^{18}-7a^{17}-12a^{16}-39a^{15}-21a^{14}-5a^{13}-36a^{12}-3a^{11}+35a^{10}-5a^{9}+20a^{8}+81a^{7}+8a^{6}+4a^{5}+85a^{4}-22a^{3}-70a^{2}+54a-106$, $25a^{19}-5a^{18}+15a^{17}-21a^{16}-2a^{15}-26a^{14}-2a^{13}+7a^{12}+15a^{11}+35a^{10}-11a^{9}+37a^{8}-71a^{7}+32a^{6}-115a^{5}+100a^{4}-103a^{3}+184a^{2}-115a+29$, $12a^{19}+13a^{18}+6a^{17}-10a^{16}-24a^{15}-15a^{14}+16a^{13}+41a^{12}+27a^{11}-30a^{10}-71a^{9}-27a^{8}+65a^{7}+89a^{6}+8a^{5}-90a^{4}-91a^{3}+12a^{2}+95a-13$, $4a^{19}-13a^{18}-8a^{17}-44a^{16}+26a^{15}-29a^{14}+63a^{13}-61a^{12}+25a^{11}-89a^{10}+49a^{9}-23a^{8}+86a^{7}-61a^{6}+16a^{5}-129a^{4}+79a^{3}-23a^{2}+134a-55$, $10a^{19}-5a^{18}-33a^{17}+34a^{16}-32a^{15}+43a^{14}+13a^{13}-28a^{12}-6a^{11}-61a^{10}+93a^{9}-62a^{8}+87a^{7}-21a^{6}-119a^{5}+114a^{4}-148a^{3}+212a^{2}-87a-27$, $10a^{19}+191a^{18}-158a^{17}+107a^{16}+33a^{15}-314a^{14}+260a^{13}-162a^{12}-108a^{11}+520a^{10}-433a^{9}+263a^{8}+302a^{7}-870a^{6}+700a^{5}-363a^{4}-642a^{3}+1433a^{2}-1131a+442$, $261a^{19}+35a^{18}-161a^{17}+208a^{16}-25a^{15}-399a^{14}+177a^{13}-49a^{12}-588a^{11}+32a^{10}+166a^{9}-966a^{8}+30a^{7}+364a^{6}-1214a^{5}-200a^{4}+851a^{3}-1489a^{2}-566a-337$, $604a^{19}-224a^{18}+871a^{17}-350a^{16}+685a^{15}+169a^{14}-175a^{13}+1136a^{12}-1269a^{11}+1601a^{10}-1117a^{9}+827a^{8}+468a^{7}-1642a^{6}+2823a^{5}-3588a^{4}+3415a^{3}-2305a^{2}+500a-1952$
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| Regulator: | \( 6395590809330 \) (assuming GRH) |
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Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{10}\cdot 6395590809330 \cdot 2}{2\cdot\sqrt{1037398203776905299351207857106906772728021}}\cr\approx \mathstrut & 0.602152657647239 \end{aligned}\] (assuming GRH)
Galois group
| A non-solvable group of order 2432902008176640000 |
| The 627 conjugacy class representatives for $S_{20}$ |
| Character table for $S_{20}$ |
Intermediate fields
| The extension is primitive: there are no intermediate fields between this field and $\Q$. |
Sibling fields
| Degree 40 sibling: | data not computed |
| Minimal sibling: | This field is its own minimal sibling |
Frobenius cycle types
| $p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cycle type | ${\href{/padicField/2.13.0.1}{13} }{,}\,{\href{/padicField/2.5.0.1}{5} }{,}\,{\href{/padicField/2.2.0.1}{2} }$ | R | ${\href{/padicField/5.10.0.1}{10} }{,}\,{\href{/padicField/5.6.0.1}{6} }{,}\,{\href{/padicField/5.3.0.1}{3} }{,}\,{\href{/padicField/5.1.0.1}{1} }$ | R | $19{,}\,{\href{/padicField/11.1.0.1}{1} }$ | ${\href{/padicField/13.13.0.1}{13} }{,}\,{\href{/padicField/13.4.0.1}{4} }{,}\,{\href{/padicField/13.2.0.1}{2} }{,}\,{\href{/padicField/13.1.0.1}{1} }$ | ${\href{/padicField/17.12.0.1}{12} }{,}\,{\href{/padicField/17.5.0.1}{5} }{,}\,{\href{/padicField/17.3.0.1}{3} }$ | ${\href{/padicField/19.10.0.1}{10} }^{2}$ | ${\href{/padicField/23.7.0.1}{7} }^{2}{,}\,{\href{/padicField/23.3.0.1}{3} }{,}\,{\href{/padicField/23.2.0.1}{2} }{,}\,{\href{/padicField/23.1.0.1}{1} }$ | ${\href{/padicField/29.6.0.1}{6} }{,}\,{\href{/padicField/29.5.0.1}{5} }{,}\,{\href{/padicField/29.3.0.1}{3} }^{3}$ | ${\href{/padicField/31.13.0.1}{13} }{,}\,{\href{/padicField/31.6.0.1}{6} }{,}\,{\href{/padicField/31.1.0.1}{1} }$ | $18{,}\,{\href{/padicField/37.1.0.1}{1} }^{2}$ | ${\href{/padicField/41.13.0.1}{13} }{,}\,{\href{/padicField/41.5.0.1}{5} }{,}\,{\href{/padicField/41.2.0.1}{2} }$ | $17{,}\,{\href{/padicField/43.2.0.1}{2} }{,}\,{\href{/padicField/43.1.0.1}{1} }$ | $15{,}\,{\href{/padicField/47.5.0.1}{5} }$ | ${\href{/padicField/53.14.0.1}{14} }{,}\,{\href{/padicField/53.5.0.1}{5} }{,}\,{\href{/padicField/53.1.0.1}{1} }$ | R |
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 |
|---|---|---|---|---|---|---|---|
|
\(3\)
| 3.1.2.1a1.2 | $x^{2} + 6$ | $2$ | $1$ | $1$ | $C_2$ | $$[\ ]_{2}$$ |
| 3.18.1.0a1.1 | $x^{18} + x^{10} + 2 x^{8} + 2 x^{6} + x^{5} + 2 x^{4} + 2 x^{2} + 2$ | $1$ | $18$ | $0$ | $C_{18}$ | $$[\ ]^{18}$$ | |
|
\(7\)
| 7.1.20.19a1.1 | $x^{20} + 7$ | $20$ | $1$ | $19$ | 20T18 | $$[\ ]_{20}^{4}$$ |
|
\(59\)
| $\Q_{59}$ | $x + 57$ | $1$ | $1$ | $0$ | Trivial | $$[\ ]$$ |
| $\Q_{59}$ | $x + 57$ | $1$ | $1$ | $0$ | Trivial | $$[\ ]$$ | |
| 59.1.2.1a1.2 | $x^{2} + 118$ | $2$ | $1$ | $1$ | $C_2$ | $$[\ ]_{2}$$ | |
| 59.8.1.0a1.1 | $x^{8} + 16 x^{4} + 32 x^{3} + 2 x^{2} + 50 x + 2$ | $1$ | $8$ | $0$ | $C_8$ | $$[\ ]^{8}$$ | |
| 59.8.1.0a1.1 | $x^{8} + 16 x^{4} + 32 x^{3} + 2 x^{2} + 50 x + 2$ | $1$ | $8$ | $0$ | $C_8$ | $$[\ ]^{8}$$ | |
|
\(1986351023\)
| Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $$[\ ]_{2}$$ | |
| Deg $6$ | $1$ | $6$ | $0$ | $C_6$ | $$[\ ]^{6}$$ | ||
| Deg $12$ | $1$ | $12$ | $0$ | $C_{12}$ | $$[\ ]^{12}$$ | ||
|
\(258853157374157\)
| Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $$[\ ]_{2}$$ | |
| Deg $3$ | $1$ | $3$ | $0$ | $C_3$ | $$[\ ]^{3}$$ | ||
| Deg $15$ | $1$ | $15$ | $0$ | $C_{15}$ | $$[\ ]^{15}$$ |