Normalized defining polynomial
\( x^{15} - 6 x^{14} + 29 x^{13} - 119 x^{12} + 396 x^{11} - 1132 x^{10} + 2906 x^{9} - 6522 x^{8} + \cdots - 2421 \)
Invariants
Degree: | $15$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
| |
Signature: | $[1, 7]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
| |
Discriminant: | \(-8450344007000266933623879\) \(\medspace = -\,3^{7}\cdot 1213^{7}\) | sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
| |
Root discriminant: | \(45.90\) | 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: | $3^{1/2}1213^{1/2}\approx 60.32412452742269$ | ||
Ramified primes: | \(3\), \(1213\) | sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
magma: PrimeDivisors(Discriminant(OK));
oscar: prime_divisors(discriminant((OK)))
| |
Discriminant root field: | \(\Q(\sqrt{-3639}) \) | ||
$\card{ \Aut(K/\Q) }$: | $1$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
| |
This field is not Galois over $\Q$. | |||
This is not a CM field. |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $\frac{1}{3}a^{6}+\frac{1}{3}a^{4}+\frac{1}{3}a^{2}$, $\frac{1}{3}a^{7}+\frac{1}{3}a^{5}+\frac{1}{3}a^{3}$, $\frac{1}{3}a^{8}-\frac{1}{3}a^{2}$, $\frac{1}{9}a^{9}-\frac{1}{3}a^{5}-\frac{4}{9}a^{3}-\frac{1}{3}a$, $\frac{1}{9}a^{10}-\frac{1}{9}a^{4}$, $\frac{1}{9}a^{11}-\frac{1}{9}a^{5}$, $\frac{1}{9}a^{12}-\frac{1}{9}a^{6}$, $\frac{1}{81}a^{13}+\frac{4}{81}a^{12}-\frac{4}{81}a^{11}-\frac{1}{81}a^{10}+\frac{1}{27}a^{9}-\frac{1}{27}a^{8}+\frac{2}{81}a^{7}+\frac{8}{81}a^{6}+\frac{25}{81}a^{5}-\frac{32}{81}a^{4}-\frac{4}{9}a^{3}-\frac{1}{27}a^{2}-\frac{1}{9}a+\frac{1}{9}$, $\frac{1}{30\!\cdots\!31}a^{14}+\frac{552779285442629}{30\!\cdots\!31}a^{13}+\frac{549848504754818}{33\!\cdots\!59}a^{12}-\frac{27017080172585}{942869095121349}a^{11}-\frac{884867963771006}{27\!\cdots\!21}a^{10}+\frac{398355002683082}{33\!\cdots\!59}a^{9}-\frac{16\!\cdots\!07}{27\!\cdots\!21}a^{8}+\frac{12\!\cdots\!34}{30\!\cdots\!31}a^{7}+\frac{42\!\cdots\!04}{10\!\cdots\!77}a^{6}-\frac{16\!\cdots\!96}{30\!\cdots\!31}a^{5}-\frac{66\!\cdots\!16}{30\!\cdots\!31}a^{4}+\frac{10\!\cdots\!91}{10\!\cdots\!77}a^{3}+\frac{49\!\cdots\!60}{10\!\cdots\!77}a^{2}-\frac{27\!\cdots\!34}{11\!\cdots\!53}a-\frac{93\!\cdots\!76}{33\!\cdots\!59}$
Monogenic: | No | |
Index: | Not computed | |
Inessential primes: | $3$ |
Class group and class number
$C_{7}$, which has order $7$ (assuming GRH)
Unit group
Rank: | $7$ | sage: UK.rank()
gp: K.fu
magma: UnitRank(K);
oscar: rank(UK)
| |
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: | $\frac{110098422693676}{30\!\cdots\!31}a^{14}-\frac{871031322155096}{30\!\cdots\!31}a^{13}+\frac{36\!\cdots\!48}{30\!\cdots\!31}a^{12}-\frac{48421391659897}{942869095121349}a^{11}+\frac{15\!\cdots\!11}{91\!\cdots\!07}a^{10}-\frac{46\!\cdots\!79}{10\!\cdots\!77}a^{9}+\frac{31\!\cdots\!98}{27\!\cdots\!21}a^{8}-\frac{78\!\cdots\!98}{30\!\cdots\!31}a^{7}+\frac{14\!\cdots\!75}{30\!\cdots\!31}a^{6}-\frac{26\!\cdots\!14}{30\!\cdots\!31}a^{5}+\frac{14\!\cdots\!53}{10\!\cdots\!77}a^{4}-\frac{16\!\cdots\!67}{10\!\cdots\!77}a^{3}+\frac{14\!\cdots\!51}{11\!\cdots\!53}a^{2}-\frac{15\!\cdots\!12}{33\!\cdots\!59}a+\frac{67\!\cdots\!20}{11\!\cdots\!53}$, $\frac{56\!\cdots\!55}{30\!\cdots\!31}a^{14}-\frac{10\!\cdots\!44}{10\!\cdots\!77}a^{13}+\frac{14\!\cdots\!85}{30\!\cdots\!31}a^{12}-\frac{619440588067219}{314289698373783}a^{11}+\frac{17\!\cdots\!62}{27\!\cdots\!21}a^{10}-\frac{17\!\cdots\!24}{10\!\cdots\!77}a^{9}+\frac{12\!\cdots\!16}{27\!\cdots\!21}a^{8}-\frac{98\!\cdots\!80}{10\!\cdots\!77}a^{7}+\frac{58\!\cdots\!38}{30\!\cdots\!31}a^{6}-\frac{34\!\cdots\!44}{10\!\cdots\!77}a^{5}+\frac{16\!\cdots\!90}{30\!\cdots\!31}a^{4}-\frac{68\!\cdots\!75}{10\!\cdots\!77}a^{3}+\frac{61\!\cdots\!21}{10\!\cdots\!77}a^{2}-\frac{12\!\cdots\!26}{33\!\cdots\!59}a+\frac{26\!\cdots\!58}{33\!\cdots\!59}$, $\frac{643609340621560}{30\!\cdots\!31}a^{14}-\frac{10\!\cdots\!63}{10\!\cdots\!77}a^{13}+\frac{14\!\cdots\!09}{30\!\cdots\!31}a^{12}-\frac{61075729864892}{314289698373783}a^{11}+\frac{16\!\cdots\!70}{27\!\cdots\!21}a^{10}-\frac{16\!\cdots\!17}{10\!\cdots\!77}a^{9}+\frac{11\!\cdots\!15}{27\!\cdots\!21}a^{8}-\frac{86\!\cdots\!03}{10\!\cdots\!77}a^{7}+\frac{49\!\cdots\!20}{30\!\cdots\!31}a^{6}-\frac{29\!\cdots\!15}{10\!\cdots\!77}a^{5}+\frac{13\!\cdots\!46}{30\!\cdots\!31}a^{4}-\frac{51\!\cdots\!47}{10\!\cdots\!77}a^{3}+\frac{37\!\cdots\!88}{10\!\cdots\!77}a^{2}-\frac{51\!\cdots\!27}{33\!\cdots\!59}a-\frac{12\!\cdots\!58}{33\!\cdots\!59}$, $\frac{10\!\cdots\!82}{10\!\cdots\!77}a^{14}-\frac{18\!\cdots\!85}{33\!\cdots\!59}a^{13}+\frac{26\!\cdots\!84}{10\!\cdots\!77}a^{12}-\frac{11\!\cdots\!24}{104763232791261}a^{11}+\frac{31\!\cdots\!97}{91\!\cdots\!07}a^{10}-\frac{32\!\cdots\!92}{33\!\cdots\!59}a^{9}+\frac{22\!\cdots\!16}{91\!\cdots\!07}a^{8}-\frac{17\!\cdots\!10}{33\!\cdots\!59}a^{7}+\frac{10\!\cdots\!62}{10\!\cdots\!77}a^{6}-\frac{63\!\cdots\!02}{33\!\cdots\!59}a^{5}+\frac{29\!\cdots\!41}{10\!\cdots\!77}a^{4}-\frac{12\!\cdots\!31}{33\!\cdots\!59}a^{3}+\frac{11\!\cdots\!81}{33\!\cdots\!59}a^{2}-\frac{22\!\cdots\!06}{11\!\cdots\!53}a+\frac{52\!\cdots\!43}{11\!\cdots\!53}$, $\frac{133902148977308}{30\!\cdots\!31}a^{14}-\frac{214882211894551}{10\!\cdots\!77}a^{13}+\frac{30\!\cdots\!75}{30\!\cdots\!31}a^{12}-\frac{12789276307789}{314289698373783}a^{11}+\frac{34\!\cdots\!90}{27\!\cdots\!21}a^{10}-\frac{34\!\cdots\!23}{10\!\cdots\!77}a^{9}+\frac{23\!\cdots\!28}{27\!\cdots\!21}a^{8}-\frac{17\!\cdots\!36}{10\!\cdots\!77}a^{7}+\frac{10\!\cdots\!99}{30\!\cdots\!31}a^{6}-\frac{60\!\cdots\!95}{10\!\cdots\!77}a^{5}+\frac{26\!\cdots\!18}{30\!\cdots\!31}a^{4}-\frac{10\!\cdots\!08}{10\!\cdots\!77}a^{3}+\frac{82\!\cdots\!90}{10\!\cdots\!77}a^{2}-\frac{16\!\cdots\!76}{33\!\cdots\!59}a+\frac{45\!\cdots\!31}{33\!\cdots\!59}$, $\frac{18\!\cdots\!38}{30\!\cdots\!31}a^{14}-\frac{501888842885077}{33\!\cdots\!59}a^{13}+\frac{20\!\cdots\!33}{30\!\cdots\!31}a^{12}-\frac{72102218808298}{314289698373783}a^{11}+\frac{11\!\cdots\!49}{27\!\cdots\!21}a^{10}-\frac{77\!\cdots\!22}{10\!\cdots\!77}a^{9}+\frac{33\!\cdots\!13}{27\!\cdots\!21}a^{8}+\frac{30\!\cdots\!52}{33\!\cdots\!59}a^{7}-\frac{16\!\cdots\!70}{30\!\cdots\!31}a^{6}+\frac{14\!\cdots\!67}{10\!\cdots\!77}a^{5}-\frac{13\!\cdots\!08}{30\!\cdots\!31}a^{4}+\frac{95\!\cdots\!30}{10\!\cdots\!77}a^{3}-\frac{14\!\cdots\!12}{10\!\cdots\!77}a^{2}+\frac{31\!\cdots\!19}{33\!\cdots\!59}a-\frac{66\!\cdots\!62}{33\!\cdots\!59}$, $\frac{16\!\cdots\!97}{30\!\cdots\!31}a^{14}-\frac{80\!\cdots\!66}{30\!\cdots\!31}a^{13}+\frac{42\!\cdots\!39}{33\!\cdots\!59}a^{12}-\frac{470658427720621}{942869095121349}a^{11}+\frac{42\!\cdots\!03}{27\!\cdots\!21}a^{10}-\frac{14\!\cdots\!93}{33\!\cdots\!59}a^{9}+\frac{28\!\cdots\!01}{27\!\cdots\!21}a^{8}-\frac{67\!\cdots\!92}{30\!\cdots\!31}a^{7}+\frac{43\!\cdots\!20}{10\!\cdots\!77}a^{6}-\frac{22\!\cdots\!04}{30\!\cdots\!31}a^{5}+\frac{33\!\cdots\!54}{30\!\cdots\!31}a^{4}-\frac{13\!\cdots\!07}{10\!\cdots\!77}a^{3}+\frac{97\!\cdots\!95}{10\!\cdots\!77}a^{2}-\frac{44\!\cdots\!12}{11\!\cdots\!53}a-\frac{29\!\cdots\!35}{33\!\cdots\!59}$ (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)]
| |
Regulator: | \( 4974627.527237572 \) (assuming GRH) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{1}\cdot(2\pi)^{7}\cdot 4974627.527237572 \cdot 7}{2\cdot\sqrt{8450344007000266933623879}}\cr\approx \mathstrut & 4.63106090571296 \end{aligned}\] (assuming GRH)
Galois group
A solvable group of order 30 |
The 9 conjugacy class representatives for $D_{15}$ |
Character table for $D_{15}$ |
Intermediate fields
3.1.3639.1, 5.1.13242321.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Sibling fields
Galois closure: | deg 30 |
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 | ${\href{/padicField/2.5.0.1}{5} }^{3}$ | R | $15$ | $15$ | ${\href{/padicField/11.2.0.1}{2} }^{7}{,}\,{\href{/padicField/11.1.0.1}{1} }$ | $15$ | $15$ | ${\href{/padicField/19.5.0.1}{5} }^{3}$ | $15$ | ${\href{/padicField/29.2.0.1}{2} }^{7}{,}\,{\href{/padicField/29.1.0.1}{1} }$ | $15$ | ${\href{/padicField/37.2.0.1}{2} }^{7}{,}\,{\href{/padicField/37.1.0.1}{1} }$ | ${\href{/padicField/41.3.0.1}{3} }^{5}$ | ${\href{/padicField/43.3.0.1}{3} }^{5}$ | $15$ | ${\href{/padicField/53.2.0.1}{2} }^{7}{,}\,{\href{/padicField/53.1.0.1}{1} }$ | ${\href{/padicField/59.5.0.1}{5} }^{3}$ |
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 |
---|---|---|---|---|---|---|---|
\(3\) | $\Q_{3}$ | $x + 1$ | $1$ | $1$ | $0$ | Trivial | $[\ ]$ |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
3.2.1.2 | $x^{2} + 3$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | |
\(1213\) | $\Q_{1213}$ | $x$ | $1$ | $1$ | $0$ | Trivial | $[\ ]$ |
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ | ||
Deg $2$ | $2$ | $1$ | $1$ | $C_2$ | $[\ ]_{2}$ |
Artin representations
Label | Dimension | Conductor | Artin stem field | $G$ | Ind | $\chi(c)$ | |
---|---|---|---|---|---|---|---|
* | 1.1.1t1.a.a | $1$ | $1$ | \(\Q\) | $C_1$ | $1$ | $1$ |
1.3639.2t1.a.a | $1$ | $ 3 \cdot 1213 $ | \(\Q(\sqrt{-3639}) \) | $C_2$ (as 2T1) | $1$ | $-1$ | |
* | 2.3639.3t2.a.a | $2$ | $ 3 \cdot 1213 $ | 3.1.3639.1 | $S_3$ (as 3T2) | $1$ | $0$ |
* | 2.3639.5t2.a.b | $2$ | $ 3 \cdot 1213 $ | 5.1.13242321.1 | $D_{5}$ (as 5T2) | $1$ | $0$ |
* | 2.3639.5t2.a.a | $2$ | $ 3 \cdot 1213 $ | 5.1.13242321.1 | $D_{5}$ (as 5T2) | $1$ | $0$ |
* | 2.3639.15t2.a.a | $2$ | $ 3 \cdot 1213 $ | 15.1.8450344007000266933623879.1 | $D_{15}$ (as 15T2) | $1$ | $0$ |
* | 2.3639.15t2.a.b | $2$ | $ 3 \cdot 1213 $ | 15.1.8450344007000266933623879.1 | $D_{15}$ (as 15T2) | $1$ | $0$ |
* | 2.3639.15t2.a.c | $2$ | $ 3 \cdot 1213 $ | 15.1.8450344007000266933623879.1 | $D_{15}$ (as 15T2) | $1$ | $0$ |
* | 2.3639.15t2.a.d | $2$ | $ 3 \cdot 1213 $ | 15.1.8450344007000266933623879.1 | $D_{15}$ (as 15T2) | $1$ | $0$ |