Normalized defining polynomial
\( x^{32} + 1 \)
Invariants
Degree: | $32$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
| |
Signature: | $[0, 16]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
| |
Discriminant: | \(1461501637330902918203684832716283019655932542976\) \(\medspace = 2^{160}\) | sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
| |
Root discriminant: | \(32.00\) | 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: | $2^{5}\approx 32.0$ | ||
Ramified primes: | \(2\) | sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
magma: PrimeDivisors(Discriminant(OK));
oscar: prime_divisors(discriminant((OK)))
| |
Discriminant root field: | \(\Q\) | ||
$\card{ \Gal(K/\Q) }$: | $32$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
| |
This field is Galois and abelian over $\Q$. | |||
Conductor: | \(64=2^{6}\) | ||
Dirichlet character group: | $\lbrace$$\chi_{64}(1,·)$, $\chi_{64}(3,·)$, $\chi_{64}(5,·)$, $\chi_{64}(7,·)$, $\chi_{64}(9,·)$, $\chi_{64}(11,·)$, $\chi_{64}(13,·)$, $\chi_{64}(15,·)$, $\chi_{64}(17,·)$, $\chi_{64}(19,·)$, $\chi_{64}(21,·)$, $\chi_{64}(23,·)$, $\chi_{64}(25,·)$, $\chi_{64}(27,·)$, $\chi_{64}(29,·)$, $\chi_{64}(31,·)$, $\chi_{64}(33,·)$, $\chi_{64}(35,·)$, $\chi_{64}(37,·)$, $\chi_{64}(39,·)$, $\chi_{64}(41,·)$, $\chi_{64}(43,·)$, $\chi_{64}(45,·)$, $\chi_{64}(47,·)$, $\chi_{64}(49,·)$, $\chi_{64}(51,·)$, $\chi_{64}(53,·)$, $\chi_{64}(55,·)$, $\chi_{64}(57,·)$, $\chi_{64}(59,·)$, $\chi_{64}(61,·)$, $\chi_{64}(63,·)$$\rbrace$ | ||
This is a CM field. | |||
Reflex fields: | unavailable$^{32768}$ |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $a^{14}$, $a^{15}$, $a^{16}$, $a^{17}$, $a^{18}$, $a^{19}$, $a^{20}$, $a^{21}$, $a^{22}$, $a^{23}$, $a^{24}$, $a^{25}$, $a^{26}$, $a^{27}$, $a^{28}$, $a^{29}$, $a^{30}$, $a^{31}$
Monogenic: | Yes | |
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)
| |
Torsion generator: | \( a \) (order $64$) | 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: | $a^{2}+a+1$, $a^{6}+a^{3}+1$, $a^{4}+a^{3}+a^{2}+a+1$, $a^{12}+a^{9}+a^{6}+a^{3}+1$, $a^{18}+a^{17}+a^{16}+a^{15}+a^{14}+a^{13}+a^{12}+a^{11}+a^{10}+a^{9}+a^{8}+a^{7}+a^{6}+a^{5}+a^{4}+a^{3}+a^{2}+a+1$, $a^{30}-a^{2}+1$, $a^{26}-a^{20}+a^{13}-a^{7}+1$, $a^{27}-a^{18}-a^{13}+a^{9}+a^{4}$, $a^{22}-a^{11}+a$, $a^{31}-a^{30}+a^{29}-a^{28}+a^{27}-a^{26}+a^{25}-a^{21}+a^{20}-a^{19}+a^{18}-a^{17}+a^{16}-a^{15}+a^{14}-a^{10}+a^{9}-a^{8}+a^{7}-a^{6}+a^{5}-a^{4}+a^{3}$, $a^{28}-a^{21}+a^{14}-a^{7}+a^{3}$, $a^{26}-a^{6}+1$, $a^{27}-a^{22}+1$, $a^{29}-a^{27}-a^{22}-a^{17}-a^{12}-a^{7}-a^{2}$, $a^{31}-a^{30}+a^{29}-a^{28}+a^{27}-a^{26}+a^{25}-a^{24}+a^{23}-a^{22}+a^{21}-a^{20}+a^{19}-a^{18}+a^{17}-a^{16}+a^{15}-a^{14}+a^{13}-a^{12}+a^{11}-a^{10}+1$ (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: | \( 211230625393.46567 \) (assuming GRH) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{16}\cdot 211230625393.46567 \cdot 17}{64\cdot\sqrt{1461501637330902918203684832716283019655932542976}}\cr\approx \mathstrut & 0.273844531562237 \end{aligned}\] (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 | R | $16^{2}$ | $16^{2}$ | ${\href{/padicField/7.8.0.1}{8} }^{4}$ | $16^{2}$ | $16^{2}$ | ${\href{/padicField/17.4.0.1}{4} }^{8}$ | $16^{2}$ | ${\href{/padicField/23.8.0.1}{8} }^{4}$ | $16^{2}$ | ${\href{/padicField/31.2.0.1}{2} }^{16}$ | $16^{2}$ | ${\href{/padicField/41.8.0.1}{8} }^{4}$ | $16^{2}$ | ${\href{/padicField/47.4.0.1}{4} }^{8}$ | $16^{2}$ | $16^{2}$ |
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 |
---|---|---|---|---|---|---|---|
\(2\) | Deg $32$ | $32$ | $1$ | $160$ |