Normalized defining polynomial
\( x^{32} - x^{31} + 2 x^{30} - 3 x^{29} + 5 x^{28} - 8 x^{27} + 13 x^{26} - 21 x^{25} + 34 x^{24} + \cdots + 1 \)
Invariants
Degree: | $32$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
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Signature: | $[0, 16]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
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Discriminant: | \(1250223652010309685753479160887484565582275390625\) \(\medspace = 5^{16}\cdot 17^{30}\) | 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: | \(31.84\) | 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: | $5^{1/2}17^{15/16}\approx 31.844238354614745$ | ||
Ramified primes: | \(5\), \(17\) | 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: | \(\Q\) | ||
$\card{ \Gal(K/\Q) }$: | $32$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
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This field is Galois and abelian over $\Q$. | |||
Conductor: | \(85=5\cdot 17\) | ||
Dirichlet character group: | $\lbrace$$\chi_{85}(1,·)$, $\chi_{85}(4,·)$, $\chi_{85}(6,·)$, $\chi_{85}(9,·)$, $\chi_{85}(11,·)$, $\chi_{85}(14,·)$, $\chi_{85}(16,·)$, $\chi_{85}(19,·)$, $\chi_{85}(21,·)$, $\chi_{85}(24,·)$, $\chi_{85}(26,·)$, $\chi_{85}(29,·)$, $\chi_{85}(31,·)$, $\chi_{85}(36,·)$, $\chi_{85}(39,·)$, $\chi_{85}(41,·)$, $\chi_{85}(44,·)$, $\chi_{85}(46,·)$, $\chi_{85}(49,·)$, $\chi_{85}(54,·)$, $\chi_{85}(56,·)$, $\chi_{85}(59,·)$, $\chi_{85}(61,·)$, $\chi_{85}(64,·)$, $\chi_{85}(66,·)$, $\chi_{85}(69,·)$, $\chi_{85}(71,·)$, $\chi_{85}(74,·)$, $\chi_{85}(76,·)$, $\chi_{85}(79,·)$, $\chi_{85}(81,·)$, $\chi_{85}(84,·)$$\rbrace$ | ||
This is a CM field. | |||
Reflex fields: | unavailable$^{32768}$ |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $a^{14}$, $a^{15}$, $a^{16}$, $\frac{1}{1597}a^{17}-\frac{610}{1597}$, $\frac{1}{1597}a^{18}-\frac{610}{1597}a$, $\frac{1}{1597}a^{19}-\frac{610}{1597}a^{2}$, $\frac{1}{1597}a^{20}-\frac{610}{1597}a^{3}$, $\frac{1}{1597}a^{21}-\frac{610}{1597}a^{4}$, $\frac{1}{1597}a^{22}-\frac{610}{1597}a^{5}$, $\frac{1}{1597}a^{23}-\frac{610}{1597}a^{6}$, $\frac{1}{1597}a^{24}-\frac{610}{1597}a^{7}$, $\frac{1}{1597}a^{25}-\frac{610}{1597}a^{8}$, $\frac{1}{1597}a^{26}-\frac{610}{1597}a^{9}$, $\frac{1}{1597}a^{27}-\frac{610}{1597}a^{10}$, $\frac{1}{1597}a^{28}-\frac{610}{1597}a^{11}$, $\frac{1}{1597}a^{29}-\frac{610}{1597}a^{12}$, $\frac{1}{1597}a^{30}-\frac{610}{1597}a^{13}$, $\frac{1}{1597}a^{31}-\frac{610}{1597}a^{14}$
Monogenic: | Not computed | |
Index: | $1$ | |
Inessential primes: | None |
Class group and class number
$C_{17}$, which has order $17$ (assuming GRH)
Unit group
Rank: | $15$ | sage: UK.rank()
gp: K.fu
magma: UnitRank(K);
oscar: rank(UK)
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Torsion generator: | \( -\frac{13}{1597} a^{24} - \frac{46368}{1597} a^{7} \) (order $34$) | 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: | $\frac{13}{1597}a^{25}+\frac{46368}{1597}a^{8}$, $\frac{2}{1597}a^{20}+\frac{6765}{1597}a^{3}+1$, $\frac{610}{1597}a^{31}-\frac{1220}{1597}a^{30}+\frac{1830}{1597}a^{29}-\frac{2961}{1597}a^{28}+\frac{4880}{1597}a^{27}-\frac{7930}{1597}a^{26}+\frac{12810}{1597}a^{25}-\frac{20740}{1597}a^{24}+\frac{33550}{1597}a^{23}-\frac{54290}{1597}a^{22}+\frac{87840}{1597}a^{21}-\frac{142130}{1597}a^{20}+\frac{229970}{1597}a^{19}-\frac{372100}{1597}a^{18}+\frac{602070}{1597}a^{17}-610a^{16}+987a^{15}-\frac{372100}{1597}a^{14}-\frac{229970}{1597}a^{13}-\frac{142130}{1597}a^{12}+\frac{229971}{1597}a^{11}-\frac{54290}{1597}a^{10}-\frac{33550}{1597}a^{9}-\frac{20740}{1597}a^{8}-\frac{12810}{1597}a^{7}-\frac{7930}{1597}a^{6}-\frac{4880}{1597}a^{5}-\frac{3050}{1597}a^{4}-\frac{1830}{1597}a^{3}-\frac{1220}{1597}a^{2}-\frac{610}{1597}a-\frac{610}{1597}$, $\frac{8}{1597}a^{23}+\frac{2}{1597}a^{20}+\frac{28657}{1597}a^{6}+\frac{6765}{1597}a^{3}+1$, $\frac{610}{1597}a^{31}-\frac{1220}{1597}a^{30}+\frac{1830}{1597}a^{29}-\frac{3050}{1597}a^{28}+\frac{4880}{1597}a^{27}-\frac{7930}{1597}a^{26}+\frac{12810}{1597}a^{25}-\frac{20740}{1597}a^{24}+\frac{33550}{1597}a^{23}-\frac{54290}{1597}a^{22}+\frac{87840}{1597}a^{21}-\frac{142130}{1597}a^{20}+\frac{229970}{1597}a^{19}-\frac{372100}{1597}a^{18}+\frac{602070}{1597}a^{17}-610a^{16}+987a^{15}-\frac{372100}{1597}a^{14}-\frac{229970}{1597}a^{13}-\frac{142130}{1597}a^{12}-\frac{87840}{1597}a^{11}-\frac{54290}{1597}a^{10}-\frac{33550}{1597}a^{9}-\frac{20740}{1597}a^{8}-\frac{12810}{1597}a^{7}-\frac{7930}{1597}a^{6}-\frac{4880}{1597}a^{5}-\frac{3050}{1597}a^{4}-\frac{1830}{1597}a^{3}-\frac{1220}{1597}a^{2}-\frac{610}{1597}a+\frac{987}{1597}$, $\frac{21}{1597}a^{25}+\frac{1}{1597}a^{19}+\frac{75025}{1597}a^{8}+\frac{4181}{1597}a^{2}$, $\frac{21}{1597}a^{25}+\frac{1}{1597}a^{18}+\frac{75025}{1597}a^{8}+\frac{2584}{1597}a$, $\frac{21}{1597}a^{25}+\frac{75025}{1597}a^{8}+1$, $\frac{55}{1597}a^{27}-\frac{5}{1597}a^{23}+\frac{1}{1597}a^{19}+\frac{196418}{1597}a^{10}-\frac{17711}{1597}a^{6}+\frac{4181}{1597}a^{2}$, $\frac{1220}{1597}a^{31}-a^{30}+2a^{29}-3a^{28}+5a^{27}-8a^{26}+13a^{25}-21a^{24}+34a^{23}-55a^{22}+89a^{21}-144a^{20}+233a^{19}-\frac{602070}{1597}a^{18}+610a^{17}-987a^{16}+1597a^{15}+\frac{229970}{1597}a^{14}+610a^{13}+377a^{12}+233a^{11}+144a^{10}+89a^{9}+55a^{8}+34a^{7}+21a^{6}+13a^{5}+8a^{4}+5a^{3}+3a^{2}+\frac{610}{1597}a+1$, $\frac{987}{1597}a^{31}-\frac{1220}{1597}a^{30}+\frac{1830}{1597}a^{29}-\frac{3050}{1597}a^{28}+\frac{4880}{1597}a^{27}-\frac{7930}{1597}a^{26}+\frac{12810}{1597}a^{25}-\frac{20740}{1597}a^{24}+\frac{33563}{1597}a^{23}-\frac{54290}{1597}a^{22}+\frac{87840}{1597}a^{21}-\frac{142130}{1597}a^{20}+\frac{229970}{1597}a^{19}-\frac{372100}{1597}a^{18}+\frac{602070}{1597}a^{17}-610a^{16}+987a^{15}+\frac{974169}{1597}a^{14}-\frac{229970}{1597}a^{13}-\frac{142130}{1597}a^{12}-\frac{87840}{1597}a^{11}-\frac{54290}{1597}a^{10}-\frac{33550}{1597}a^{9}-\frac{20740}{1597}a^{8}-\frac{12810}{1597}a^{7}+\frac{38438}{1597}a^{6}-\frac{4880}{1597}a^{5}-\frac{3050}{1597}a^{4}-\frac{1830}{1597}a^{3}-\frac{1220}{1597}a^{2}-\frac{610}{1597}a-\frac{610}{1597}$, $\frac{34}{1597}a^{26}+\frac{34}{1597}a^{25}+\frac{13}{1597}a^{24}+\frac{121393}{1597}a^{9}+\frac{121393}{1597}a^{8}+\frac{46368}{1597}a^{7}$, $\frac{987}{1597}a^{31}-\frac{987}{1597}a^{30}+\frac{1974}{1597}a^{29}-\frac{3016}{1597}a^{28}+\frac{4935}{1597}a^{27}-\frac{7896}{1597}a^{26}+\frac{12831}{1597}a^{25}-\frac{20727}{1597}a^{24}+\frac{33550}{1597}a^{23}-\frac{54285}{1597}a^{22}+\frac{87843}{1597}a^{21}-\frac{142128}{1597}a^{20}+\frac{229971}{1597}a^{19}-\frac{372099}{1597}a^{18}+\frac{602070}{1597}a^{17}-610a^{16}+987a^{15}+\frac{974169}{1597}a^{14}+\frac{602070}{1597}a^{13}+\frac{372099}{1597}a^{12}+\frac{33553}{1597}a^{11}+\frac{142128}{1597}a^{10}+\frac{87843}{1597}a^{9}+\frac{54285}{1597}a^{8}+\frac{33558}{1597}a^{7}-\frac{7930}{1597}a^{6}+\frac{12831}{1597}a^{5}+\frac{7896}{1597}a^{4}+\frac{4935}{1597}a^{3}+\frac{2961}{1597}a^{2}+\frac{1974}{1597}a+\frac{987}{1597}$, $\frac{1364}{1597}a^{31}-a^{30}+\frac{2495}{1597}a^{29}-\frac{3715}{1597}a^{28}+\frac{6066}{1597}a^{27}-\frac{9781}{1597}a^{26}+\frac{15847}{1597}a^{25}-\frac{25615}{1597}a^{24}+\frac{41467}{1597}a^{23}-\frac{67098}{1597}a^{22}+\frac{108580}{1597}a^{21}-\frac{175682}{1597}a^{20}+\frac{284260}{1597}a^{19}-\frac{459940}{1597}a^{18}+\frac{744200}{1597}a^{17}-754a^{16}+1220a^{15}+\frac{1718369}{1597}a^{14}-377a^{13}+\frac{656358}{1597}a^{12}+\frac{87842}{1597}a^{11}+\frac{54287}{1597}a^{10}+\frac{33555}{1597}a^{9}+\frac{20732}{1597}a^{8}+\frac{59191}{1597}a^{7}-\frac{20748}{1597}a^{6}+\frac{22625}{1597}a^{5}+\frac{9760}{1597}a^{4}-\frac{2262}{1597}a^{3}+\frac{3660}{1597}a^{2}-\frac{754}{1597}a+\frac{1220}{1597}$, $\frac{233}{1597}a^{31}-\frac{89}{1597}a^{30}+\frac{34}{1597}a^{27}-\frac{13}{1597}a^{26}+\frac{13}{1597}a^{25}+\frac{5}{1597}a^{23}-\frac{2}{1597}a^{22}+\frac{2}{1597}a^{21}-\frac{1}{1597}a^{18}+\frac{1}{1597}a^{17}+\frac{832040}{1597}a^{14}-\frac{317811}{1597}a^{13}+\frac{121393}{1597}a^{10}-\frac{46368}{1597}a^{9}+\frac{46368}{1597}a^{8}+\frac{17711}{1597}a^{6}-\frac{6765}{1597}a^{5}+\frac{6765}{1597}a^{4}-\frac{987}{1597}a+\frac{987}{1597}$ (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)]
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Regulator: | \( 42597284566.379654 \) (assuming GRH) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
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Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{16}\cdot 42597284566.379654 \cdot 17}{34\cdot\sqrt{1250223652010309685753479160887484565582275390625}}\cr\approx \mathstrut & 0.112392144505091 \end{aligned}\] (assuming GRH)
Galois group
$C_2\times C_{16}$ (as 32T32):
An abelian group of order 32 |
The 32 conjugacy class representatives for $C_2\times C_{16}$ |
Character table for $C_2\times C_{16}$ |
Intermediate fields
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Frobenius cycle types
$p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cycle type | ${\href{/padicField/2.8.0.1}{8} }^{4}$ | $16^{2}$ | R | $16^{2}$ | $16^{2}$ | ${\href{/padicField/13.4.0.1}{4} }^{8}$ | R | ${\href{/padicField/19.8.0.1}{8} }^{4}$ | $16^{2}$ | $16^{2}$ | $16^{2}$ | $16^{2}$ | $16^{2}$ | ${\href{/padicField/43.8.0.1}{8} }^{4}$ | ${\href{/padicField/47.4.0.1}{4} }^{8}$ | ${\href{/padicField/53.8.0.1}{8} }^{4}$ | ${\href{/padicField/59.8.0.1}{8} }^{4}$ |
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 |
---|---|---|---|---|---|---|---|
\(5\) | Deg $32$ | $2$ | $16$ | $16$ | |||
\(17\) | Deg $32$ | $16$ | $2$ | $30$ |