Normalized defining polynomial
\( x^{16} - 2 x^{15} + x^{14} + 8 x^{13} - 40 x^{12} + 56 x^{11} - 24 x^{10} - 112 x^{9} + 383 x^{8} + \cdots + 32 \)
Invariants
Degree: | $16$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
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Signature: | $[0, 8]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
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Discriminant: | \(119842600295694598144\) \(\medspace = 2^{34}\cdot 17^{8}\) | 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: | \(17.99\) | 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: | $2^{11/4}17^{1/2}\approx 27.736837922354518$ | ||
Ramified primes: | \(2\), \(17\) | 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: | \(\Q\) | ||
$\card{ \Aut(K/\Q) }$: | $8$ | 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 \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $\frac{1}{2}a^{6}-\frac{1}{2}a^{2}$, $\frac{1}{2}a^{7}-\frac{1}{2}a^{3}$, $\frac{1}{2}a^{8}-\frac{1}{2}a^{4}$, $\frac{1}{4}a^{9}-\frac{1}{4}a^{7}-\frac{1}{4}a^{5}-\frac{1}{4}a^{3}-\frac{1}{2}a$, $\frac{1}{4}a^{10}-\frac{1}{4}a^{8}-\frac{1}{4}a^{6}-\frac{1}{4}a^{4}-\frac{1}{2}a^{2}$, $\frac{1}{16}a^{11}+\frac{1}{16}a^{10}+\frac{1}{16}a^{9}+\frac{1}{16}a^{8}+\frac{3}{16}a^{7}-\frac{1}{16}a^{6}-\frac{3}{16}a^{5}-\frac{3}{16}a^{4}+\frac{1}{8}a^{3}-\frac{1}{8}a^{2}$, $\frac{1}{48}a^{12}-\frac{1}{12}a^{10}+\frac{1}{12}a^{9}-\frac{1}{24}a^{8}-\frac{1}{6}a^{7}-\frac{1}{8}a^{6}-\frac{1}{12}a^{5}+\frac{17}{48}a^{4}-\frac{1}{2}a^{3}-\frac{7}{24}a^{2}+\frac{1}{6}a+\frac{1}{3}$, $\frac{1}{96}a^{13}-\frac{1}{96}a^{12}+\frac{1}{48}a^{11}+\frac{1}{48}a^{10}-\frac{1}{8}a^{9}-\frac{1}{8}a^{8}+\frac{1}{12}a^{7}+\frac{1}{12}a^{6}-\frac{11}{32}a^{5}+\frac{25}{96}a^{4}+\frac{5}{48}a^{3}+\frac{17}{48}a^{2}-\frac{1}{6}a-\frac{1}{6}$, $\frac{1}{96}a^{14}-\frac{1}{96}a^{12}-\frac{1}{48}a^{11}-\frac{1}{12}a^{10}+\frac{5}{48}a^{9}-\frac{1}{16}a^{8}+\frac{7}{48}a^{7}-\frac{7}{96}a^{6}-\frac{5}{16}a^{5}+\frac{19}{96}a^{4}-\frac{1}{6}a^{3}-\frac{19}{48}a^{2}-\frac{1}{2}a-\frac{1}{2}$, $\frac{1}{299263584}a^{15}+\frac{276121}{149631792}a^{14}+\frac{458825}{149631792}a^{13}-\frac{1882277}{299263584}a^{12}+\frac{106565}{9351987}a^{11}+\frac{4000889}{49877264}a^{10}+\frac{244015}{3117329}a^{9}+\frac{725697}{12469316}a^{8}+\frac{26764151}{299263584}a^{7}+\frac{92377}{149631792}a^{6}+\frac{8684187}{49877264}a^{5}-\frac{97895479}{299263584}a^{4}-\frac{24940433}{74815896}a^{3}-\frac{28382999}{149631792}a^{2}-\frac{1412115}{3117329}a-\frac{2963191}{18703974}$
Monogenic: | No | |
Index: | Not computed | |
Inessential primes: | $2$ |
Class group and class number
Trivial group, which has order $1$
Unit group
Rank: | $7$ | 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: | $\frac{725027}{9653664}a^{15}-\frac{630067}{3217888}a^{14}+\frac{160301}{1608944}a^{13}+\frac{1691515}{2413416}a^{12}-\frac{1366593}{402236}a^{11}+\frac{13044587}{2413416}a^{10}-\frac{3904403}{2413416}a^{9}-\frac{26503957}{2413416}a^{8}+\frac{109088043}{3217888}a^{7}-\frac{510929051}{9653664}a^{6}+\frac{268747721}{4826832}a^{5}-\frac{89909335}{2413416}a^{4}+\frac{21813797}{1206708}a^{3}-\frac{3770209}{804472}a^{2}+\frac{191985}{201118}a-\frac{413108}{301677}$, $\frac{4684729}{299263584}a^{15}-\frac{1515301}{299263584}a^{14}-\frac{1373825}{37407948}a^{13}+\frac{708577}{6234658}a^{12}-\frac{17738545}{49877264}a^{11}-\frac{22325975}{149631792}a^{10}+\frac{36199879}{49877264}a^{9}-\frac{52044105}{49877264}a^{8}+\frac{548774629}{299263584}a^{7}-\frac{94377725}{299263584}a^{6}+\frac{42598265}{49877264}a^{5}-\frac{43643087}{49877264}a^{4}+\frac{43039858}{9351987}a^{3}-\frac{6457972}{3117329}a^{2}+\frac{19483450}{9351987}a+\frac{4569179}{9351987}$, $\frac{3056919}{99754528}a^{15}+\frac{7308265}{149631792}a^{14}-\frac{18478867}{99754528}a^{13}+\frac{12799799}{49877264}a^{12}-\frac{6804509}{37407948}a^{11}-\frac{130667875}{49877264}a^{10}+\frac{656816105}{149631792}a^{9}-\frac{371382383}{149631792}a^{8}-\frac{409342185}{99754528}a^{7}+\frac{1604710945}{74815896}a^{6}-\frac{8729891789}{299263584}a^{5}+\frac{193258427}{6234658}a^{4}-\frac{1588569091}{149631792}a^{3}+\frac{315459677}{37407948}a^{2}+\frac{55857763}{18703974}a+\frac{38944327}{9351987}$, $\frac{20023439}{149631792}a^{15}-\frac{1022316}{3117329}a^{14}+\frac{27121663}{149631792}a^{13}+\frac{170666893}{149631792}a^{12}-\frac{872624953}{149631792}a^{11}+\frac{461370007}{49877264}a^{10}-\frac{575006251}{149631792}a^{9}-\frac{827949651}{49877264}a^{8}+\frac{179013799}{3117329}a^{7}-\frac{4672439901}{49877264}a^{6}+\frac{2695743067}{24938632}a^{5}-\frac{6302323283}{74815896}a^{4}+\frac{979924087}{18703974}a^{3}-\frac{360562793}{18703974}a^{2}+\frac{140966891}{18703974}a-\frac{35373067}{9351987}$, $\frac{4610777}{149631792}a^{15}-\frac{98557}{18703974}a^{14}-\frac{11908399}{149631792}a^{13}+\frac{9296473}{37407948}a^{12}-\frac{106103317}{149631792}a^{11}-\frac{71118275}{149631792}a^{10}+\frac{280361525}{149631792}a^{9}-\frac{448886587}{149631792}a^{8}+\frac{101045411}{24938632}a^{7}+\frac{258205651}{149631792}a^{6}-\frac{41928560}{9351987}a^{5}+\frac{1287505901}{149631792}a^{4}-\frac{14668543}{9351987}a^{3}+\frac{60104597}{24938632}a^{2}+\frac{72004205}{18703974}a+\frac{2426602}{3117329}$, $\frac{6333787}{149631792}a^{15}-\frac{6452009}{149631792}a^{14}-\frac{7285357}{149631792}a^{13}+\frac{13900621}{37407948}a^{12}-\frac{201728167}{149631792}a^{11}+\frac{102064477}{149631792}a^{10}+\frac{213522755}{149631792}a^{9}-\frac{272840325}{49877264}a^{8}+\frac{862403719}{74815896}a^{7}-\frac{351435997}{37407948}a^{6}+\frac{66090131}{12469316}a^{5}+\frac{924376541}{149631792}a^{4}-\frac{25008930}{3117329}a^{3}+\frac{983230333}{74815896}a^{2}-\frac{90010253}{18703974}a+\frac{42041650}{9351987}$, $\frac{4254677}{18703974}a^{15}-\frac{7661781}{12469316}a^{14}+\frac{940500}{3117329}a^{13}+\frac{20206664}{9351987}a^{12}-\frac{32570090}{3117329}a^{11}+\frac{157525822}{9351987}a^{10}-\frac{42858196}{9351987}a^{9}-\frac{317634266}{9351987}a^{8}+\frac{650537017}{6234658}a^{7}-\frac{6094785217}{37407948}a^{6}+\frac{1576140560}{9351987}a^{5}-\frac{1081135223}{9351987}a^{4}+\frac{498215450}{9351987}a^{3}-\frac{49689355}{3117329}a^{2}+\frac{6940064}{3117329}a-\frac{33535553}{9351987}$ | 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: | \( 76945.8851596 \) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{8}\cdot 76945.8851596 \cdot 1}{2\cdot\sqrt{119842600295694598144}}\cr\approx \mathstrut & 8.53667483673 \end{aligned}\]
Galois group
$C_2^3:C_4$ (as 16T33):
A solvable group of order 32 |
The 11 conjugacy class representatives for $C_2^3:C_4$ |
Character table for $C_2^3:C_4$ |
Intermediate fields
\(\Q(\sqrt{2}) \), \(\Q(\sqrt{34}) \), \(\Q(\sqrt{17}) \), 4.0.2312.1 x2, \(\Q(\sqrt{2}, \sqrt{17})\), 4.0.1088.2 x2, 8.0.1368408064.3 x2, 8.0.342102016.2, 8.4.10947264512.1 x2 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Sibling fields
Frobenius cycle types
$p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cycle type | R | ${\href{/padicField/3.4.0.1}{4} }^{4}$ | ${\href{/padicField/5.4.0.1}{4} }^{4}$ | ${\href{/padicField/7.4.0.1}{4} }^{4}$ | ${\href{/padicField/11.4.0.1}{4} }^{4}$ | ${\href{/padicField/13.4.0.1}{4} }^{2}{,}\,{\href{/padicField/13.2.0.1}{2} }^{4}$ | R | ${\href{/padicField/19.4.0.1}{4} }^{2}{,}\,{\href{/padicField/19.2.0.1}{2} }^{4}$ | ${\href{/padicField/23.4.0.1}{4} }^{4}$ | ${\href{/padicField/29.4.0.1}{4} }^{4}$ | ${\href{/padicField/31.2.0.1}{2} }^{8}$ | ${\href{/padicField/37.4.0.1}{4} }^{4}$ | ${\href{/padicField/41.4.0.1}{4} }^{4}$ | ${\href{/padicField/43.4.0.1}{4} }^{2}{,}\,{\href{/padicField/43.2.0.1}{2} }^{4}$ | ${\href{/padicField/47.2.0.1}{2} }^{8}$ | ${\href{/padicField/53.4.0.1}{4} }^{2}{,}\,{\href{/padicField/53.2.0.1}{2} }^{4}$ | ${\href{/padicField/59.4.0.1}{4} }^{2}{,}\,{\href{/padicField/59.2.0.1}{2} }^{4}$ |
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 |
---|---|---|---|---|---|---|---|
\(2\) | 2.2.3.1 | $x^{2} + 4 x + 2$ | $2$ | $1$ | $3$ | $C_2$ | $[3]$ |
2.2.3.1 | $x^{2} + 4 x + 2$ | $2$ | $1$ | $3$ | $C_2$ | $[3]$ | |
2.2.3.1 | $x^{2} + 4 x + 2$ | $2$ | $1$ | $3$ | $C_2$ | $[3]$ | |
2.2.3.1 | $x^{2} + 4 x + 2$ | $2$ | $1$ | $3$ | $C_2$ | $[3]$ | |
2.4.11.1 | $x^{4} + 8 x^{3} + 4 x^{2} + 2$ | $4$ | $1$ | $11$ | $C_4$ | $[3, 4]$ | |
2.4.11.1 | $x^{4} + 8 x^{3} + 4 x^{2} + 2$ | $4$ | $1$ | $11$ | $C_4$ | $[3, 4]$ | |
\(17\) | 17.4.2.1 | $x^{4} + 338 x^{3} + 31049 x^{2} + 420472 x + 123735$ | $2$ | $2$ | $2$ | $C_2^2$ | $[\ ]_{2}^{2}$ |
17.4.2.1 | $x^{4} + 338 x^{3} + 31049 x^{2} + 420472 x + 123735$ | $2$ | $2$ | $2$ | $C_2^2$ | $[\ ]_{2}^{2}$ | |
17.4.2.1 | $x^{4} + 338 x^{3} + 31049 x^{2} + 420472 x + 123735$ | $2$ | $2$ | $2$ | $C_2^2$ | $[\ ]_{2}^{2}$ | |
17.4.2.1 | $x^{4} + 338 x^{3} + 31049 x^{2} + 420472 x + 123735$ | $2$ | $2$ | $2$ | $C_2^2$ | $[\ ]_{2}^{2}$ |