Normalized defining polynomial
\( x^{18} - 3 x^{17} - 2 x^{16} + 12 x^{15} + 11 x^{14} - 55 x^{13} + 101 x^{11} - 8 x^{10} - 107 x^{9} + \cdots + 1 \)
Invariants
| Degree: | $18$ |
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| Signature: | $[0, 9]$ |
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| Discriminant: |
\(-6131323620948659515767\)
\(\medspace = -\,3^{6}\cdot 7^{15}\cdot 11^{6}\)
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| Root discriminant: | \(16.23\) |
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| Galois root discriminant: | $3^{1/2}7^{5/6}11^{1/2}\approx 29.074036854473896$ | ||
| Ramified primes: |
\(3\), \(7\), \(11\)
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| Discriminant root field: | \(\Q(\sqrt{-7}) \) | ||
| $\Aut(K/\Q)$: | $C_6$ |
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| This field is not Galois over $\Q$. | |||
| This is not a CM field. | |||
| Maximal CM subfield: | \(\Q(\zeta_{7})\) | ||
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $\frac{1}{2}a^{6}-\frac{1}{2}a^{5}-\frac{1}{2}a^{4}-\frac{1}{2}a^{3}-\frac{1}{2}a^{2}-\frac{1}{2}a-\frac{1}{2}$, $\frac{1}{2}a^{7}-\frac{1}{2}$, $\frac{1}{2}a^{8}-\frac{1}{2}a$, $\frac{1}{2}a^{9}-\frac{1}{2}a^{2}$, $\frac{1}{2}a^{10}-\frac{1}{2}a^{3}$, $\frac{1}{2}a^{11}-\frac{1}{2}a^{4}$, $\frac{1}{8}a^{12}-\frac{1}{8}a^{10}-\frac{1}{8}a^{8}-\frac{1}{4}a^{7}-\frac{1}{8}a^{6}+\frac{1}{4}a^{5}-\frac{1}{8}a^{4}-\frac{1}{2}a^{3}+\frac{3}{8}a^{2}-\frac{3}{8}$, $\frac{1}{8}a^{13}-\frac{1}{8}a^{11}-\frac{1}{8}a^{9}-\frac{1}{4}a^{8}-\frac{1}{8}a^{7}-\frac{1}{4}a^{6}+\frac{3}{8}a^{5}-\frac{1}{8}a^{3}-\frac{1}{2}a^{2}+\frac{1}{8}a-\frac{1}{2}$, $\frac{1}{40}a^{14}-\frac{1}{4}a^{10}-\frac{1}{4}a^{9}-\frac{1}{4}a^{8}-\frac{1}{10}a^{7}-\frac{1}{4}a^{6}-\frac{1}{4}a^{5}+\frac{1}{4}a^{4}-\frac{1}{2}a^{3}+\frac{1}{40}$, $\frac{1}{40}a^{15}-\frac{1}{4}a^{11}-\frac{1}{4}a^{10}-\frac{1}{4}a^{9}-\frac{1}{10}a^{8}-\frac{1}{4}a^{7}-\frac{1}{4}a^{6}+\frac{1}{4}a^{5}-\frac{1}{2}a^{4}+\frac{1}{40}a$, $\frac{1}{200}a^{16}+\frac{1}{200}a^{15}+\frac{1}{200}a^{14}-\frac{1}{20}a^{13}-\frac{1}{40}a^{12}+\frac{1}{20}a^{11}+\frac{9}{40}a^{10}+\frac{23}{100}a^{9}+\frac{31}{200}a^{8}-\frac{1}{50}a^{7}+\frac{9}{40}a^{6}-\frac{1}{5}a^{5}+\frac{9}{40}a^{4}+\frac{9}{20}a^{3}+\frac{19}{50}a^{2}-\frac{49}{200}a-\frac{37}{100}$, $\frac{1}{200}a^{17}-\frac{1}{200}a^{14}+\frac{1}{40}a^{13}-\frac{1}{20}a^{12}+\frac{7}{40}a^{11}+\frac{13}{100}a^{10}-\frac{3}{40}a^{9}-\frac{1}{20}a^{8}-\frac{41}{200}a^{7}+\frac{1}{5}a^{6}-\frac{13}{40}a^{5}-\frac{3}{20}a^{4}-\frac{7}{100}a^{3}-\frac{1}{2}a^{2}+\frac{3}{8}a+\frac{59}{200}$
| Monogenic: | No | |
| Index: | Not computed | |
| Inessential primes: | $2$ |
Class group and class number
| Ideal class group: | Trivial group, which has order $1$ |
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| Narrow class group: | Trivial group, which has order $1$ |
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Unit group
| Rank: | $8$ |
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| Torsion generator: |
\( -\frac{297}{200} a^{17} + \frac{693}{200} a^{16} + \frac{549}{100} a^{15} - \frac{297}{20} a^{14} - \frac{1053}{40} a^{13} + \frac{2651}{40} a^{12} + \frac{1827}{40} a^{11} - \frac{26037}{200} a^{10} - \frac{14067}{200} a^{9} + \frac{25083}{200} a^{8} + \frac{3609}{40} a^{7} - \frac{4059}{40} a^{6} - \frac{2583}{40} a^{5} + \frac{1989}{40} a^{4} + \frac{1089}{100} a^{3} - \frac{1341}{100} a^{2} - \frac{477}{200} a + \frac{117}{40} \)
(order $14$)
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| Fundamental units: |
$a^{17}-3a^{16}-2a^{15}+12a^{14}+11a^{13}-55a^{12}+101a^{10}-8a^{9}-107a^{8}-8a^{7}+101a^{6}-55a^{4}+11a^{3}+12a^{2}-2a-3$, $\frac{53}{40}a^{17}-\frac{287}{100}a^{16}-\frac{1049}{200}a^{15}+\frac{2391}{200}a^{14}+\frac{1013}{40}a^{13}-\frac{267}{5}a^{12}-\frac{1943}{40}a^{11}+\frac{2021}{20}a^{10}+\frac{16271}{200}a^{9}-\frac{4361}{50}a^{8}-\frac{19739}{200}a^{7}+\frac{641}{10}a^{6}+\frac{2797}{40}a^{5}-\frac{219}{10}a^{4}-\frac{327}{20}a^{3}+\frac{169}{50}a^{2}+\frac{463}{100}a-\frac{59}{200}$, $\frac{139}{100}a^{17}-\frac{79}{25}a^{16}-\frac{1077}{200}a^{15}+\frac{541}{40}a^{14}+\frac{1047}{40}a^{13}-\frac{303}{5}a^{12}-\frac{1973}{40}a^{11}+\frac{5947}{50}a^{10}+\frac{16733}{200}a^{9}-\frac{5773}{50}a^{8}-\frac{4361}{40}a^{7}+\frac{1783}{20}a^{6}+\frac{3317}{40}a^{5}-\frac{743}{20}a^{4}-\frac{4997}{200}a^{3}+\frac{171}{25}a^{2}+\frac{549}{100}a-\frac{83}{40}$, $\frac{467}{200}a^{17}-\frac{601}{100}a^{16}-\frac{184}{25}a^{15}+\frac{5061}{200}a^{14}+\frac{733}{20}a^{13}-\frac{2291}{20}a^{12}-\frac{199}{4}a^{11}+\frac{22251}{100}a^{10}+\frac{3707}{50}a^{9}-\frac{11663}{50}a^{8}-\frac{11167}{100}a^{7}+\frac{4089}{20}a^{6}+\frac{327}{4}a^{5}-\frac{439}{4}a^{4}-\frac{3293}{200}a^{3}+\frac{3099}{100}a^{2}+\frac{207}{50}a-\frac{1419}{200}$, $\frac{757}{200}a^{17}-\frac{1779}{200}a^{16}-\frac{2719}{200}a^{15}+\frac{3707}{100}a^{14}+\frac{267}{4}a^{13}-\frac{667}{4}a^{12}-\frac{2267}{20}a^{11}+\frac{31751}{100}a^{10}+\frac{9309}{50}a^{9}-\frac{30017}{100}a^{8}-\frac{24323}{100}a^{7}+\frac{951}{4}a^{6}+\frac{3473}{20}a^{5}-\frac{2089}{20}a^{4}-\frac{8183}{200}a^{3}+\frac{4171}{200}a^{2}+\frac{1981}{200}a-\frac{127}{25}$, $\frac{299}{100}a^{17}-\frac{351}{50}a^{16}-\frac{1067}{100}a^{15}+\frac{5823}{200}a^{14}+\frac{2101}{40}a^{13}-\frac{1313}{10}a^{12}-\frac{3537}{40}a^{11}+\frac{24909}{100}a^{10}+\frac{29121}{200}a^{9}-\frac{5923}{25}a^{8}-\frac{37777}{200}a^{7}+\frac{1927}{10}a^{6}+\frac{5393}{40}a^{5}-\frac{1717}{20}a^{4}-\frac{6007}{200}a^{3}+\frac{1049}{50}a^{2}+\frac{1891}{200}a-\frac{997}{200}$, $\frac{513}{200}a^{17}-\frac{1373}{200}a^{16}-\frac{1593}{200}a^{15}+\frac{1501}{50}a^{14}+\frac{1559}{40}a^{13}-\frac{5393}{40}a^{12}-\frac{407}{8}a^{11}+\frac{54653}{200}a^{10}+\frac{13647}{200}a^{9}-\frac{59913}{200}a^{8}-\frac{25001}{200}a^{7}+\frac{10667}{40}a^{6}+\frac{831}{8}a^{5}-\frac{1179}{8}a^{4}-\frac{719}{25}a^{3}+\frac{844}{25}a^{2}+\frac{433}{50}a-\frac{1141}{200}$, $\frac{269}{200}a^{17}-\frac{519}{200}a^{16}-\frac{1179}{200}a^{15}+\frac{2067}{200}a^{14}+\frac{144}{5}a^{13}-\frac{927}{20}a^{12}-62a^{11}+\frac{4091}{50}a^{10}+\frac{2827}{25}a^{9}-\frac{2791}{50}a^{8}-\frac{6337}{50}a^{7}+\frac{112}{5}a^{6}+\frac{343}{4}a^{5}+11a^{4}-\frac{4301}{200}a^{3}-\frac{1169}{200}a^{2}+\frac{471}{200}a+\frac{157}{200}$
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| Regulator: | \( 27994.834823771416 \) |
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Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{9}\cdot 27994.834823771416 \cdot 1}{14\cdot\sqrt{6131323620948659515767}}\cr\approx \mathstrut & 0.389754886856357 \end{aligned}\]
Galois group
$C_6\times S_3$ (as 18T6):
| A solvable group of order 36 |
| The 18 conjugacy class representatives for $S_3 \times C_6$ |
| Character table for $S_3 \times C_6$ |
Intermediate fields
| \(\Q(\sqrt{-7}) \), \(\Q(\zeta_{7})^+\), 3.1.231.1, \(\Q(\zeta_{7})\), 6.0.373527.1, 9.3.29595664791.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Sibling fields
| Galois closure: | data not computed |
| Degree 12 sibling: | 12.0.364807736118799281.4 |
| Degree 18 sibling: | deg 18 |
| Minimal sibling: | 12.0.364807736118799281.4 |
Frobenius cycle types
| $p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cycle type | ${\href{/padicField/2.3.0.1}{3} }^{6}$ | R | ${\href{/padicField/5.6.0.1}{6} }^{3}$ | R | R | ${\href{/padicField/13.6.0.1}{6} }^{3}$ | ${\href{/padicField/17.6.0.1}{6} }^{3}$ | ${\href{/padicField/19.6.0.1}{6} }^{3}$ | ${\href{/padicField/23.6.0.1}{6} }^{2}{,}\,{\href{/padicField/23.3.0.1}{3} }^{2}$ | ${\href{/padicField/29.3.0.1}{3} }^{6}$ | ${\href{/padicField/31.6.0.1}{6} }^{3}$ | ${\href{/padicField/37.3.0.1}{3} }^{6}$ | ${\href{/padicField/41.2.0.1}{2} }^{9}$ | ${\href{/padicField/43.2.0.1}{2} }^{6}{,}\,{\href{/padicField/43.1.0.1}{1} }^{6}$ | ${\href{/padicField/47.6.0.1}{6} }^{3}$ | ${\href{/padicField/53.6.0.1}{6} }^{2}{,}\,{\href{/padicField/53.3.0.1}{3} }^{2}$ | ${\href{/padicField/59.6.0.1}{6} }^{3}$ |
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 |
|---|---|---|---|---|---|---|---|
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\(3\)
| 3.6.1.0a1.1 | $x^{6} + 2 x^{4} + x^{2} + 2 x + 2$ | $1$ | $6$ | $0$ | $C_6$ | $$[\ ]^{6}$$ |
| 3.6.2.6a1.2 | $x^{12} + 4 x^{10} + 6 x^{8} + 4 x^{7} + 8 x^{6} + 8 x^{5} + 9 x^{4} + 4 x^{3} + 8 x^{2} + 8 x + 7$ | $2$ | $6$ | $6$ | $C_6\times C_2$ | $$[\ ]_{2}^{6}$$ | |
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\(7\)
| 7.1.6.5a1.1 | $x^{6} + 7$ | $6$ | $1$ | $5$ | $C_6$ | $$[\ ]_{6}$$ |
| 7.2.6.10a1.2 | $x^{12} + 36 x^{11} + 558 x^{10} + 4860 x^{9} + 26055 x^{8} + 88776 x^{7} + 192996 x^{6} + 266328 x^{5} + 234495 x^{4} + 131220 x^{3} + 45198 x^{2} + 8748 x + 736$ | $6$ | $2$ | $10$ | $C_6\times C_2$ | $$[\ ]_{6}^{2}$$ | |
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\(11\)
| 11.3.1.0a1.1 | $x^{3} + 2 x + 9$ | $1$ | $3$ | $0$ | $C_3$ | $$[\ ]^{3}$$ |
| 11.3.1.0a1.1 | $x^{3} + 2 x + 9$ | $1$ | $3$ | $0$ | $C_3$ | $$[\ ]^{3}$$ | |
| 11.3.2.3a1.1 | $x^{6} + 4 x^{4} + 18 x^{3} + 4 x^{2} + 47 x + 81$ | $2$ | $3$ | $3$ | $C_6$ | $$[\ ]_{2}^{3}$$ | |
| 11.3.2.3a1.1 | $x^{6} + 4 x^{4} + 18 x^{3} + 4 x^{2} + 47 x + 81$ | $2$ | $3$ | $3$ | $C_6$ | $$[\ ]_{2}^{3}$$ |
Artin representations
| Label | Dimension | Conductor | Artin stem field | $G$ | Ind | $\chi(c)$ | |
|---|---|---|---|---|---|---|---|
| *36 | 1.1.1t1.a.a | $1$ | $1$ | \(\Q\) | $C_1$ | $1$ | $1$ |
| 1.33.2t1.a.a | $1$ | $ 3 \cdot 11 $ | \(\Q(\sqrt{33}) \) | $C_2$ (as 2T1) | $1$ | $1$ | |
| 1.231.2t1.a.a | $1$ | $ 3 \cdot 7 \cdot 11 $ | \(\Q(\sqrt{-231}) \) | $C_2$ (as 2T1) | $1$ | $-1$ | |
| *36 | 1.7.2t1.a.a | $1$ | $ 7 $ | \(\Q(\sqrt{-7}) \) | $C_2$ (as 2T1) | $1$ | $-1$ |
| 1.231.6t1.a.a | $1$ | $ 3 \cdot 7 \cdot 11 $ | 6.0.603993159.1 | $C_6$ (as 6T1) | $0$ | $-1$ | |
| *36 | 1.7.3t1.a.a | $1$ | $ 7 $ | \(\Q(\zeta_{7})^+\) | $C_3$ (as 3T1) | $0$ | $1$ |
| *36 | 1.7.3t1.a.b | $1$ | $ 7 $ | \(\Q(\zeta_{7})^+\) | $C_3$ (as 3T1) | $0$ | $1$ |
| *36 | 1.7.6t1.a.a | $1$ | $ 7 $ | \(\Q(\zeta_{7})\) | $C_6$ (as 6T1) | $0$ | $-1$ |
| 1.231.6t1.a.b | $1$ | $ 3 \cdot 7 \cdot 11 $ | 6.0.603993159.1 | $C_6$ (as 6T1) | $0$ | $-1$ | |
| 1.231.6t1.b.a | $1$ | $ 3 \cdot 7 \cdot 11 $ | 6.6.86284737.1 | $C_6$ (as 6T1) | $0$ | $1$ | |
| 1.231.6t1.b.b | $1$ | $ 3 \cdot 7 \cdot 11 $ | 6.6.86284737.1 | $C_6$ (as 6T1) | $0$ | $1$ | |
| *36 | 1.7.6t1.a.b | $1$ | $ 7 $ | \(\Q(\zeta_{7})\) | $C_6$ (as 6T1) | $0$ | $-1$ |
| *36 | 2.231.3t2.a.a | $2$ | $ 3 \cdot 7 \cdot 11 $ | 3.1.231.1 | $S_3$ (as 3T2) | $1$ | $0$ |
| *36 | 2.231.6t3.d.a | $2$ | $ 3 \cdot 7 \cdot 11 $ | 6.2.1760913.1 | $D_{6}$ (as 6T3) | $1$ | $0$ |
| *36 | 2.1617.6t5.a.a | $2$ | $ 3 \cdot 7^{2} \cdot 11 $ | 6.0.603993159.2 | $S_3\times C_3$ (as 6T5) | $0$ | $0$ |
| *36 | 2.1617.12t18.a.a | $2$ | $ 3 \cdot 7^{2} \cdot 11 $ | 18.0.6131323620948659515767.1 | $S_3 \times C_6$ (as 18T6) | $0$ | $0$ |
| *36 | 2.1617.12t18.a.b | $2$ | $ 3 \cdot 7^{2} \cdot 11 $ | 18.0.6131323620948659515767.1 | $S_3 \times C_6$ (as 18T6) | $0$ | $0$ |
| *36 | 2.1617.6t5.a.b | $2$ | $ 3 \cdot 7^{2} \cdot 11 $ | 6.0.603993159.2 | $S_3\times C_3$ (as 6T5) | $0$ | $0$ |