Normalized defining polynomial
\( x^{16} - 2 x^{15} - 10 x^{14} + 129 x^{12} + 128 x^{11} - 262 x^{10} - 1405 x^{9} - 604 x^{8} + \cdots + 62631 \)
Invariants
Degree: | $16$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
| |
Signature: | $[0, 8]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
| |
Discriminant: |
\(26093349826855156494140625\)
\(\medspace = 3^{8}\cdot 5^{12}\cdot 7^{8}\cdot 41^{4}\)
| sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
| |
Root discriminant: | \(38.77\) | 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: | $3^{1/2}5^{3/4}7^{1/2}41^{1/2}\approx 98.11357012736104$ | ||
Ramified primes: |
\(3\), \(5\), \(7\), \(41\)
| sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
magma: PrimeDivisors(Discriminant(OK));
oscar: prime_divisors(discriminant((OK)))
| |
Discriminant root field: | \(\Q\) | ||
$\card{ \Aut(K/\Q) }$: | $8$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
| |
This field is not Galois over $\Q$. | |||
This is a CM field. | |||
Reflex fields: | unavailable$^{128}$ |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $\frac{1}{6}a^{12}-\frac{1}{3}a^{10}-\frac{1}{6}a^{9}-\frac{1}{6}a^{6}-\frac{1}{6}a^{3}-\frac{1}{3}a^{2}-\frac{1}{2}$, $\frac{1}{6}a^{13}-\frac{1}{3}a^{11}-\frac{1}{6}a^{10}-\frac{1}{6}a^{7}-\frac{1}{6}a^{4}-\frac{1}{3}a^{3}-\frac{1}{2}a$, $\frac{1}{6}a^{14}-\frac{1}{6}a^{11}+\frac{1}{3}a^{10}-\frac{1}{3}a^{9}-\frac{1}{6}a^{8}-\frac{1}{3}a^{6}-\frac{1}{6}a^{5}-\frac{1}{3}a^{4}-\frac{1}{3}a^{3}-\frac{1}{6}a^{2}$, $\frac{1}{25\!\cdots\!86}a^{15}+\frac{21\!\cdots\!23}{43\!\cdots\!31}a^{14}+\frac{30\!\cdots\!65}{43\!\cdots\!31}a^{13}-\frac{18\!\cdots\!51}{12\!\cdots\!93}a^{12}+\frac{55\!\cdots\!48}{12\!\cdots\!93}a^{11}-\frac{12\!\cdots\!32}{43\!\cdots\!31}a^{10}-\frac{12\!\cdots\!13}{43\!\cdots\!31}a^{9}-\frac{37\!\cdots\!69}{43\!\cdots\!31}a^{8}+\frac{23\!\cdots\!73}{12\!\cdots\!93}a^{7}+\frac{71\!\cdots\!34}{43\!\cdots\!31}a^{6}+\frac{13\!\cdots\!69}{12\!\cdots\!93}a^{5}-\frac{35\!\cdots\!41}{12\!\cdots\!93}a^{4}+\frac{12\!\cdots\!91}{43\!\cdots\!31}a^{3}+\frac{60\!\cdots\!95}{12\!\cdots\!93}a^{2}-\frac{17\!\cdots\!94}{43\!\cdots\!31}a+\frac{40\!\cdots\!85}{86\!\cdots\!62}$
Monogenic: | No | |
Index: | Not computed | |
Inessential primes: | $2$, $3$ |
Class group and class number
$C_{2}\times C_{84}$, which has order $168$
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: |
$\frac{131271386802}{18\!\cdots\!41}a^{15}-\frac{307937933701}{18\!\cdots\!41}a^{14}-\frac{4405599924059}{56\!\cdots\!23}a^{13}+\frac{3304382968459}{56\!\cdots\!23}a^{12}+\frac{55418673486403}{56\!\cdots\!23}a^{11}+\frac{11511708662820}{18\!\cdots\!41}a^{10}-\frac{200424899694490}{56\!\cdots\!23}a^{9}-\frac{185838907877968}{18\!\cdots\!41}a^{8}+\frac{68225878182659}{56\!\cdots\!23}a^{7}+\frac{21\!\cdots\!12}{56\!\cdots\!23}a^{6}+\frac{20\!\cdots\!74}{18\!\cdots\!41}a^{5}+\frac{10\!\cdots\!16}{56\!\cdots\!23}a^{4}+\frac{57\!\cdots\!35}{18\!\cdots\!41}a^{3}+\frac{19\!\cdots\!78}{56\!\cdots\!23}a^{2}+\frac{52\!\cdots\!30}{18\!\cdots\!41}a+\frac{30\!\cdots\!90}{18\!\cdots\!41}$, $\frac{12\!\cdots\!24}{21\!\cdots\!33}a^{15}+\frac{11\!\cdots\!14}{73\!\cdots\!11}a^{14}-\frac{28\!\cdots\!05}{43\!\cdots\!66}a^{13}-\frac{21\!\cdots\!47}{14\!\cdots\!22}a^{12}+\frac{35\!\cdots\!57}{73\!\cdots\!11}a^{11}+\frac{93\!\cdots\!99}{43\!\cdots\!66}a^{10}-\frac{94\!\cdots\!13}{43\!\cdots\!66}a^{9}-\frac{70\!\cdots\!20}{73\!\cdots\!11}a^{8}-\frac{96\!\cdots\!05}{14\!\cdots\!22}a^{7}+\frac{13\!\cdots\!61}{43\!\cdots\!66}a^{6}+\frac{13\!\cdots\!67}{21\!\cdots\!33}a^{5}+\frac{20\!\cdots\!39}{14\!\cdots\!22}a^{4}+\frac{81\!\cdots\!29}{43\!\cdots\!66}a^{3}+\frac{64\!\cdots\!67}{21\!\cdots\!33}a^{2}+\frac{24\!\cdots\!81}{14\!\cdots\!22}a+\frac{43\!\cdots\!59}{14\!\cdots\!22}$, $\frac{13\!\cdots\!73}{14\!\cdots\!22}a^{15}+\frac{20\!\cdots\!98}{21\!\cdots\!33}a^{14}-\frac{10\!\cdots\!01}{43\!\cdots\!66}a^{13}-\frac{32\!\cdots\!27}{14\!\cdots\!22}a^{12}-\frac{36\!\cdots\!56}{73\!\cdots\!11}a^{11}+\frac{35\!\cdots\!11}{43\!\cdots\!66}a^{10}-\frac{36\!\cdots\!71}{43\!\cdots\!66}a^{9}-\frac{26\!\cdots\!28}{21\!\cdots\!33}a^{8}-\frac{23\!\cdots\!51}{43\!\cdots\!66}a^{7}+\frac{46\!\cdots\!31}{43\!\cdots\!66}a^{6}-\frac{73\!\cdots\!63}{21\!\cdots\!33}a^{5}+\frac{88\!\cdots\!71}{14\!\cdots\!22}a^{4}+\frac{11\!\cdots\!39}{43\!\cdots\!66}a^{3}+\frac{31\!\cdots\!14}{21\!\cdots\!33}a^{2}+\frac{46\!\cdots\!63}{14\!\cdots\!22}a+\frac{13\!\cdots\!00}{73\!\cdots\!11}$, $\frac{34\!\cdots\!87}{86\!\cdots\!62}a^{15}-\frac{25\!\cdots\!41}{12\!\cdots\!93}a^{14}-\frac{37\!\cdots\!11}{43\!\cdots\!31}a^{13}+\frac{11\!\cdots\!13}{12\!\cdots\!93}a^{12}+\frac{61\!\cdots\!06}{12\!\cdots\!93}a^{11}-\frac{11\!\cdots\!21}{12\!\cdots\!93}a^{10}-\frac{21\!\cdots\!80}{12\!\cdots\!93}a^{9}-\frac{40\!\cdots\!18}{12\!\cdots\!93}a^{8}+\frac{50\!\cdots\!31}{43\!\cdots\!31}a^{7}+\frac{17\!\cdots\!59}{12\!\cdots\!93}a^{6}+\frac{56\!\cdots\!78}{12\!\cdots\!93}a^{5}-\frac{63\!\cdots\!58}{12\!\cdots\!93}a^{4}-\frac{60\!\cdots\!45}{12\!\cdots\!93}a^{3}-\frac{33\!\cdots\!09}{12\!\cdots\!93}a^{2}-\frac{54\!\cdots\!54}{43\!\cdots\!31}a-\frac{48\!\cdots\!15}{86\!\cdots\!62}$, $\frac{26\!\cdots\!65}{25\!\cdots\!86}a^{15}-\frac{15\!\cdots\!62}{43\!\cdots\!31}a^{14}-\frac{32\!\cdots\!57}{43\!\cdots\!31}a^{13}+\frac{34\!\cdots\!07}{12\!\cdots\!93}a^{12}+\frac{12\!\cdots\!53}{12\!\cdots\!93}a^{11}-\frac{41\!\cdots\!70}{43\!\cdots\!31}a^{10}-\frac{18\!\cdots\!59}{43\!\cdots\!31}a^{9}-\frac{18\!\cdots\!07}{43\!\cdots\!31}a^{8}+\frac{11\!\cdots\!99}{12\!\cdots\!93}a^{7}+\frac{16\!\cdots\!72}{43\!\cdots\!31}a^{6}+\frac{11\!\cdots\!30}{12\!\cdots\!93}a^{5}+\frac{17\!\cdots\!82}{12\!\cdots\!93}a^{4}+\frac{60\!\cdots\!79}{43\!\cdots\!31}a^{3}+\frac{17\!\cdots\!15}{12\!\cdots\!93}a^{2}+\frac{36\!\cdots\!15}{43\!\cdots\!31}a+\frac{40\!\cdots\!93}{86\!\cdots\!62}$, $\frac{44\!\cdots\!97}{43\!\cdots\!31}a^{15}-\frac{47\!\cdots\!52}{43\!\cdots\!31}a^{14}+\frac{15\!\cdots\!22}{12\!\cdots\!93}a^{13}+\frac{30\!\cdots\!90}{43\!\cdots\!31}a^{12}+\frac{14\!\cdots\!98}{12\!\cdots\!93}a^{11}-\frac{12\!\cdots\!06}{12\!\cdots\!93}a^{10}-\frac{37\!\cdots\!80}{43\!\cdots\!31}a^{9}+\frac{20\!\cdots\!30}{43\!\cdots\!31}a^{8}+\frac{13\!\cdots\!62}{12\!\cdots\!93}a^{7}+\frac{29\!\cdots\!78}{43\!\cdots\!31}a^{6}-\frac{72\!\cdots\!46}{43\!\cdots\!31}a^{5}-\frac{14\!\cdots\!71}{12\!\cdots\!93}a^{4}-\frac{26\!\cdots\!72}{12\!\cdots\!93}a^{3}-\frac{16\!\cdots\!45}{43\!\cdots\!31}a^{2}-\frac{12\!\cdots\!92}{43\!\cdots\!31}a-\frac{84\!\cdots\!05}{43\!\cdots\!31}$, $\frac{52\!\cdots\!69}{86\!\cdots\!62}a^{15}-\frac{22\!\cdots\!54}{12\!\cdots\!93}a^{14}-\frac{62\!\cdots\!69}{12\!\cdots\!93}a^{13}+\frac{11\!\cdots\!48}{12\!\cdots\!93}a^{12}+\frac{29\!\cdots\!63}{43\!\cdots\!31}a^{11}-\frac{18\!\cdots\!27}{12\!\cdots\!93}a^{10}-\frac{10\!\cdots\!91}{43\!\cdots\!31}a^{9}-\frac{60\!\cdots\!99}{12\!\cdots\!93}a^{8}+\frac{80\!\cdots\!23}{12\!\cdots\!93}a^{7}+\frac{10\!\cdots\!83}{43\!\cdots\!31}a^{6}+\frac{82\!\cdots\!66}{12\!\cdots\!93}a^{5}+\frac{28\!\cdots\!91}{43\!\cdots\!31}a^{4}+\frac{12\!\cdots\!77}{12\!\cdots\!93}a^{3}+\frac{16\!\cdots\!25}{43\!\cdots\!31}a^{2}+\frac{21\!\cdots\!13}{43\!\cdots\!31}a-\frac{13\!\cdots\!63}{86\!\cdots\!62}$
| 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: | \( 10253.363436451587 \) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{8}\cdot 10253.363436451587 \cdot 168}{2\cdot\sqrt{26093349826855156494140625}}\cr\approx \mathstrut & 0.409562010276402 \end{aligned}\]
Galois group
$C_2^3:C_4$ (as 16T21):
A solvable group of order 32 |
The 20 conjugacy class representatives for $C_2 \times (C_2^2:C_4)$ |
Character table for $C_2 \times (C_2^2:C_4)$ |
Intermediate fields
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 16 siblings: | 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 | ${\href{/padicField/2.4.0.1}{4} }^{4}$ | R | R | R | ${\href{/padicField/11.2.0.1}{2} }^{8}$ | ${\href{/padicField/13.4.0.1}{4} }^{4}$ | ${\href{/padicField/17.4.0.1}{4} }^{4}$ | ${\href{/padicField/19.2.0.1}{2} }^{8}$ | ${\href{/padicField/23.4.0.1}{4} }^{4}$ | ${\href{/padicField/29.2.0.1}{2} }^{4}{,}\,{\href{/padicField/29.1.0.1}{1} }^{8}$ | ${\href{/padicField/31.2.0.1}{2} }^{8}$ | ${\href{/padicField/37.4.0.1}{4} }^{4}$ | R | ${\href{/padicField/43.4.0.1}{4} }^{4}$ | ${\href{/padicField/47.4.0.1}{4} }^{4}$ | ${\href{/padicField/53.4.0.1}{4} }^{4}$ | ${\href{/padicField/59.2.0.1}{2} }^{8}$ |
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 |
---|---|---|---|---|---|---|---|
\(3\)
| 3.4.2.2 | $x^{4} - 6 x^{3} + 12 x^{2} + 36 x + 18$ | $2$ | $2$ | $2$ | $C_4$ | $[\ ]_{2}^{2}$ |
3.4.2.2 | $x^{4} - 6 x^{3} + 12 x^{2} + 36 x + 18$ | $2$ | $2$ | $2$ | $C_4$ | $[\ ]_{2}^{2}$ | |
3.4.2.2 | $x^{4} - 6 x^{3} + 12 x^{2} + 36 x + 18$ | $2$ | $2$ | $2$ | $C_4$ | $[\ ]_{2}^{2}$ | |
3.4.2.2 | $x^{4} - 6 x^{3} + 12 x^{2} + 36 x + 18$ | $2$ | $2$ | $2$ | $C_4$ | $[\ ]_{2}^{2}$ | |
\(5\)
| 5.8.6.1 | $x^{8} + 16 x^{7} + 104 x^{6} + 352 x^{5} + 674 x^{4} + 784 x^{3} + 776 x^{2} + 928 x + 721$ | $4$ | $2$ | $6$ | $C_4\times C_2$ | $[\ ]_{4}^{2}$ |
5.8.6.1 | $x^{8} + 16 x^{7} + 104 x^{6} + 352 x^{5} + 674 x^{4} + 784 x^{3} + 776 x^{2} + 928 x + 721$ | $4$ | $2$ | $6$ | $C_4\times C_2$ | $[\ ]_{4}^{2}$ | |
\(7\)
| 7.8.4.1 | $x^{8} + 38 x^{6} + 8 x^{5} + 395 x^{4} - 72 x^{3} + 1026 x^{2} - 872 x + 401$ | $2$ | $4$ | $4$ | $C_4\times C_2$ | $[\ ]_{2}^{4}$ |
7.8.4.1 | $x^{8} + 38 x^{6} + 8 x^{5} + 395 x^{4} - 72 x^{3} + 1026 x^{2} - 872 x + 401$ | $2$ | $4$ | $4$ | $C_4\times C_2$ | $[\ ]_{2}^{4}$ | |
\(41\)
| 41.2.0.1 | $x^{2} + 38 x + 6$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ |
41.2.0.1 | $x^{2} + 38 x + 6$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | |
41.2.0.1 | $x^{2} + 38 x + 6$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | |
41.2.0.1 | $x^{2} + 38 x + 6$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | |
41.4.2.1 | $x^{4} + 1962 x^{3} + 998289 x^{2} + 35245368 x + 7080121$ | $2$ | $2$ | $2$ | $C_2^2$ | $[\ ]_{2}^{2}$ | |
41.4.2.1 | $x^{4} + 1962 x^{3} + 998289 x^{2} + 35245368 x + 7080121$ | $2$ | $2$ | $2$ | $C_2^2$ | $[\ ]_{2}^{2}$ |