Properties

Label 15.15.309...129.2
Degree $15$
Signature $(15, 0)$
Discriminant $3.091\times 10^{30}$
Root discriminant \(107.81\)
Ramified primes $3,7,11$
Class number $3$ (GRH)
Class group [3] (GRH)
Galois group $C_{15}$ (as 15T1)

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Normalized defining polynomial

Copy content comment:Define the number field
 
Copy content sage:x = polygen(QQ); K.<a> = NumberField(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403)
 
Copy content gp:K = bnfinit(y^15 - 3*y^14 - 114*y^13 + 165*y^12 + 5277*y^11 + 309*y^10 - 119015*y^9 - 163851*y^8 + 1201692*y^7 + 3201011*y^6 - 2654712*y^5 - 17750946*y^4 - 19922550*y^3 - 3294435*y^2 + 4535715*y + 831403, 1)
 
Copy content magma:R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403);
 
Copy content oscar:Qx, x = polynomial_ring(QQ); K, a = number_field(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403)
 

\( x^{15} - 3 x^{14} - 114 x^{13} + 165 x^{12} + 5277 x^{11} + 309 x^{10} - 119015 x^{9} - 163851 x^{8} + \cdots + 831403 \) Copy content Toggle raw display

Copy content comment:Defining polynomial
 
Copy content sage:K.defining_polynomial()
 
Copy content gp:K.pol
 
Copy content magma:DefiningPolynomial(K);
 
Copy content oscar:defining_polynomial(K)
 

Invariants

Degree:  $15$
Copy content comment:Degree over Q
 
Copy content sage:K.degree()
 
Copy content gp:poldegree(K.pol)
 
Copy content magma:Degree(K);
 
Copy content oscar:degree(K)
 
Signature:  $(15, 0)$
Copy content comment:Signature
 
Copy content sage:K.signature()
 
Copy content gp:K.sign
 
Copy content magma:Signature(K);
 
Copy content oscar:signature(K)
 
Discriminant:   \(3091133177133909578645502426129\) \(\medspace = 3^{20}\cdot 7^{10}\cdot 11^{12}\) Copy content Toggle raw display
Copy content comment:Discriminant
 
Copy content sage:K.disc()
 
Copy content gp:K.disc
 
Copy content magma:OK := Integers(K); Discriminant(OK);
 
Copy content oscar:OK = ring_of_integers(K); discriminant(OK)
 
Root discriminant:  \(107.81\)
Copy content comment:Root discriminant
 
Copy content sage:(K.disc().abs())^(1./K.degree())
 
Copy content gp:abs(K.disc)^(1/poldegree(K.pol))
 
Copy content magma:Abs(Discriminant(OK))^(1/Degree(K));
 
Copy content oscar:OK = ring_of_integers(K); (1.0 * abs(discriminant(OK)))^(1/degree(K))
 
Galois root discriminant:  $3^{4/3}7^{2/3}11^{4/5}\approx 107.81383996755932$
Ramified primes:   \(3\), \(7\), \(11\) Copy content Toggle raw display
Copy content comment:Ramified primes
 
Copy content sage:K.disc().support()
 
Copy content gp:factor(abs(K.disc))[,1]~
 
Copy content magma:PrimeDivisors(Discriminant(OK));
 
Copy content oscar:prime_divisors(discriminant(OK))
 
Discriminant root field:  \(\Q\)
$\Aut(K/\Q)$ $=$ $\Gal(K/\Q)$:   $C_{15}$
Copy content comment:Autmorphisms
 
Copy content sage:K.automorphisms()
 
Copy content magma:Automorphisms(K);
 
Copy content oscar:automorphism_group(K)
 
This field is Galois and abelian over $\Q$.
Conductor:  \(693=3^{2}\cdot 7\cdot 11\)
Dirichlet character group:    $\lbrace$$\chi_{693}(64,·)$, $\chi_{693}(1,·)$, $\chi_{693}(529,·)$, $\chi_{693}(631,·)$, $\chi_{693}(466,·)$, $\chi_{693}(592,·)$, $\chi_{693}(625,·)$, $\chi_{693}(562,·)$, $\chi_{693}(499,·)$, $\chi_{693}(214,·)$, $\chi_{693}(247,·)$, $\chi_{693}(25,·)$, $\chi_{693}(58,·)$, $\chi_{693}(379,·)$, $\chi_{693}(190,·)$$\rbrace$
This is not a CM field.
This field has no CM subfields.

Integral basis (with respect to field generator \(a\))

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $\frac{1}{2}a^{10}-\frac{1}{2}a^{9}-\frac{1}{2}a^{3}-\frac{1}{2}a-\frac{1}{2}$, $\frac{1}{2}a^{11}-\frac{1}{2}a^{9}-\frac{1}{2}a^{4}-\frac{1}{2}a^{3}-\frac{1}{2}a^{2}-\frac{1}{2}$, $\frac{1}{2}a^{12}-\frac{1}{2}a^{9}-\frac{1}{2}a^{5}-\frac{1}{2}a^{4}-\frac{1}{2}$, $\frac{1}{2}a^{13}-\frac{1}{2}a^{9}-\frac{1}{2}a^{6}-\frac{1}{2}a^{5}-\frac{1}{2}a^{3}-\frac{1}{2}$, $\frac{1}{21\cdots 74}a^{14}+\frac{44\cdots 57}{21\cdots 74}a^{13}-\frac{24\cdots 61}{21\cdots 74}a^{12}+\frac{20\cdots 85}{16\cdots 61}a^{11}+\frac{12\cdots 94}{10\cdots 87}a^{10}-\frac{73\cdots 71}{21\cdots 74}a^{9}-\frac{37\cdots 13}{10\cdots 87}a^{8}+\frac{62\cdots 53}{21\cdots 74}a^{7}+\frac{23\cdots 19}{10\cdots 87}a^{6}+\frac{26\cdots 76}{10\cdots 87}a^{5}+\frac{22\cdots 39}{10\cdots 87}a^{4}+\frac{34\cdots 52}{10\cdots 87}a^{3}-\frac{51\cdots 51}{10\cdots 87}a^{2}+\frac{12\cdots 55}{10\cdots 87}a+\frac{11\cdots 25}{32\cdots 22}$ Copy content Toggle raw display

Copy content comment:Integral basis
 
Copy content sage:K.integral_basis()
 
Copy content gp:K.zk
 
Copy content magma:IntegralBasis(K);
 
Copy content oscar:basis(OK)
 

Monogenic:  Not computed
Index:  $1$
Inessential primes:  None

Class group and class number

Ideal class group:  $C_{3}$, which has order $3$ (assuming GRH)
Copy content comment:Class group
 
Copy content sage:K.class_group().invariants()
 
Copy content gp:K.clgp
 
Copy content magma:ClassGroup(K);
 
Copy content oscar:class_group(K)
 
Narrow class group:  $C_{3}$, which has order $3$ (assuming GRH)
Copy content comment:Narrow class group
 
Copy content sage:K.narrow_class_group().invariants()
 
Copy content gp:bnfnarrow(K)
 
Copy content magma:NarrowClassGroup(K);
 

Unit group

Copy content comment:Unit group
 
Copy content sage:UK = K.unit_group()
 
Copy content magma:UK, fUK := UnitGroup(K);
 
Copy content oscar:UK, fUK = unit_group(OK)
 
Rank:  $14$
Copy content comment:Unit rank
 
Copy content sage:UK.rank()
 
Copy content gp:K.fu
 
Copy content magma:UnitRank(K);
 
Copy content oscar:rank(UK)
 
Torsion generator:   \( -1 \)  (order $2$) Copy content Toggle raw display
Copy content comment:Generator for roots of unity
 
Copy content sage:UK.torsion_generator()
 
Copy content gp:K.tu[2]
 
Copy content magma:K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
Copy content oscar:torsion_units_generator(OK)
 
Fundamental units:   $\frac{11\cdots 14}{10\cdots 87}a^{14}-\frac{57\cdots 74}{10\cdots 87}a^{13}-\frac{11\cdots 13}{10\cdots 87}a^{12}+\frac{64\cdots 96}{16\cdots 61}a^{11}+\frac{48\cdots 85}{10\cdots 87}a^{10}-\frac{10\cdots 74}{10\cdots 87}a^{9}-\frac{10\cdots 04}{10\cdots 87}a^{8}+\frac{59\cdots 04}{10\cdots 87}a^{7}+\frac{11\cdots 35}{10\cdots 87}a^{6}+\frac{88\cdots 88}{10\cdots 87}a^{5}-\frac{48\cdots 33}{10\cdots 87}a^{4}-\frac{88\cdots 40}{10\cdots 87}a^{3}-\frac{26\cdots 22}{10\cdots 87}a^{2}+\frac{21\cdots 34}{10\cdots 87}a+\frac{62\cdots 46}{16\cdots 61}$, $\frac{22\cdots 01}{10\cdots 87}a^{14}-\frac{12\cdots 35}{10\cdots 87}a^{13}-\frac{22\cdots 46}{10\cdots 87}a^{12}+\frac{13\cdots 34}{16\cdots 61}a^{11}+\frac{98\cdots 82}{10\cdots 87}a^{10}-\frac{22\cdots 62}{10\cdots 87}a^{9}-\frac{21\cdots 44}{10\cdots 87}a^{8}+\frac{13\cdots 55}{10\cdots 87}a^{7}+\frac{24\cdots 11}{10\cdots 87}a^{6}+\frac{16\cdots 52}{10\cdots 87}a^{5}-\frac{98\cdots 05}{10\cdots 87}a^{4}-\frac{17\cdots 85}{10\cdots 87}a^{3}-\frac{49\cdots 61}{10\cdots 87}a^{2}+\frac{40\cdots 26}{10\cdots 87}a+\frac{12\cdots 70}{16\cdots 61}$, $\frac{24\cdots 07}{10\cdots 87}a^{14}-\frac{12\cdots 63}{10\cdots 87}a^{13}-\frac{24\cdots 50}{10\cdots 87}a^{12}+\frac{14\cdots 24}{16\cdots 61}a^{11}+\frac{10\cdots 04}{10\cdots 87}a^{10}-\frac{23\cdots 36}{10\cdots 87}a^{9}-\frac{23\cdots 61}{10\cdots 87}a^{8}+\frac{14\cdots 73}{10\cdots 87}a^{7}+\frac{25\cdots 01}{10\cdots 87}a^{6}+\frac{17\cdots 26}{10\cdots 87}a^{5}-\frac{10\cdots 99}{10\cdots 87}a^{4}-\frac{18\cdots 63}{10\cdots 87}a^{3}-\frac{53\cdots 70}{10\cdots 87}a^{2}+\frac{43\cdots 60}{10\cdots 87}a+\frac{13\cdots 27}{16\cdots 61}$, $\frac{15\cdots 60}{10\cdots 87}a^{14}-\frac{82\cdots 78}{10\cdots 87}a^{13}-\frac{15\cdots 31}{10\cdots 87}a^{12}+\frac{92\cdots 98}{16\cdots 61}a^{11}+\frac{67\cdots 93}{10\cdots 87}a^{10}-\frac{15\cdots 52}{10\cdots 87}a^{9}-\frac{15\cdots 50}{10\cdots 87}a^{8}+\frac{91\cdots 86}{10\cdots 87}a^{7}+\frac{16\cdots 49}{10\cdots 87}a^{6}+\frac{11\cdots 94}{10\cdots 87}a^{5}-\frac{67\cdots 54}{10\cdots 87}a^{4}-\frac{11\cdots 42}{10\cdots 87}a^{3}-\frac{35\cdots 95}{10\cdots 87}a^{2}+\frac{27\cdots 08}{10\cdots 87}a+\frac{86\cdots 48}{16\cdots 61}$, $\frac{78\cdots 12}{10\cdots 87}a^{14}-\frac{82\cdots 93}{21\cdots 74}a^{13}-\frac{16\cdots 87}{21\cdots 74}a^{12}+\frac{45\cdots 04}{16\cdots 61}a^{11}+\frac{69\cdots 79}{21\cdots 74}a^{10}-\frac{14\cdots 93}{21\cdots 74}a^{9}-\frac{76\cdots 05}{10\cdots 87}a^{8}+\frac{41\cdots 09}{10\cdots 87}a^{7}+\frac{16\cdots 89}{21\cdots 74}a^{6}+\frac{63\cdots 42}{10\cdots 87}a^{5}-\frac{69\cdots 39}{21\cdots 74}a^{4}-\frac{62\cdots 86}{10\cdots 87}a^{3}-\frac{18\cdots 64}{10\cdots 87}a^{2}+\frac{29\cdots 17}{21\cdots 74}a+\frac{89\cdots 11}{32\cdots 22}$, $\frac{27\cdots 82}{10\cdots 87}a^{14}-\frac{27\cdots 45}{21\cdots 74}a^{13}-\frac{58\cdots 13}{21\cdots 74}a^{12}+\frac{30\cdots 01}{32\cdots 22}a^{11}+\frac{25\cdots 89}{21\cdots 74}a^{10}-\frac{22\cdots 23}{10\cdots 87}a^{9}-\frac{27\cdots 95}{10\cdots 87}a^{8}+\frac{66\cdots 09}{10\cdots 87}a^{7}+\frac{59\cdots 51}{21\cdots 74}a^{6}+\frac{31\cdots 15}{10\cdots 87}a^{5}-\frac{10\cdots 98}{10\cdots 87}a^{4}-\frac{51\cdots 45}{21\cdots 74}a^{3}-\frac{36\cdots 29}{21\cdots 74}a^{2}+\frac{56\cdots 05}{21\cdots 74}a+\frac{81\cdots 83}{16\cdots 61}$, $\frac{49\cdots 91}{21\cdots 74}a^{14}-\frac{33\cdots 45}{21\cdots 74}a^{13}-\frac{21\cdots 17}{10\cdots 87}a^{12}+\frac{37\cdots 59}{32\cdots 22}a^{11}+\frac{16\cdots 35}{21\cdots 74}a^{10}-\frac{32\cdots 97}{10\cdots 87}a^{9}-\frac{17\cdots 39}{10\cdots 87}a^{8}+\frac{62\cdots 11}{21\cdots 74}a^{7}+\frac{19\cdots 86}{10\cdots 87}a^{6}+\frac{67\cdots 45}{21\cdots 74}a^{5}-\frac{88\cdots 89}{10\cdots 87}a^{4}-\frac{10\cdots 57}{10\cdots 87}a^{3}+\frac{46\cdots 65}{21\cdots 74}a^{2}+\frac{77\cdots 65}{21\cdots 74}a-\frac{48\cdots 05}{16\cdots 61}$, $\frac{45\cdots 25}{10\cdots 87}a^{14}-\frac{49\cdots 95}{21\cdots 74}a^{13}-\frac{45\cdots 42}{10\cdots 87}a^{12}+\frac{55\cdots 27}{32\cdots 22}a^{11}+\frac{38\cdots 47}{21\cdots 74}a^{10}-\frac{92\cdots 33}{21\cdots 74}a^{9}-\frac{42\cdots 61}{10\cdots 87}a^{8}+\frac{31\cdots 69}{10\cdots 87}a^{7}+\frac{93\cdots 33}{21\cdots 74}a^{6}+\frac{55\cdots 99}{21\cdots 74}a^{5}-\frac{38\cdots 25}{21\cdots 74}a^{4}-\frac{64\cdots 77}{21\cdots 74}a^{3}-\frac{16\cdots 05}{21\cdots 74}a^{2}+\frac{14\cdots 51}{21\cdots 74}a+\frac{43\cdots 21}{32\cdots 22}$, $\frac{24\cdots 75}{21\cdots 74}a^{14}-\frac{10\cdots 23}{21\cdots 74}a^{13}-\frac{12\cdots 25}{10\cdots 87}a^{12}+\frac{11\cdots 23}{32\cdots 22}a^{11}+\frac{57\cdots 20}{10\cdots 87}a^{10}-\frac{16\cdots 65}{21\cdots 74}a^{9}-\frac{13\cdots 48}{10\cdots 87}a^{8}-\frac{10\cdots 85}{21\cdots 74}a^{7}+\frac{14\cdots 68}{10\cdots 87}a^{6}+\frac{34\cdots 13}{21\cdots 74}a^{5}-\frac{56\cdots 71}{10\cdots 87}a^{4}-\frac{26\cdots 73}{21\cdots 74}a^{3}-\frac{10\cdots 05}{21\cdots 74}a^{2}+\frac{31\cdots 40}{10\cdots 87}a+\frac{20\cdots 19}{32\cdots 22}$, $\frac{22\cdots 49}{10\cdots 87}a^{14}-\frac{27\cdots 05}{21\cdots 74}a^{13}-\frac{22\cdots 44}{10\cdots 87}a^{12}+\frac{15\cdots 18}{16\cdots 61}a^{11}+\frac{90\cdots 27}{10\cdots 87}a^{10}-\frac{57\cdots 09}{21\cdots 74}a^{9}-\frac{19\cdots 53}{10\cdots 87}a^{8}+\frac{26\cdots 57}{10\cdots 87}a^{7}+\frac{42\cdots 39}{21\cdots 74}a^{6}+\frac{53\cdots 67}{21\cdots 74}a^{5}-\frac{88\cdots 01}{10\cdots 87}a^{4}-\frac{22\cdots 15}{21\cdots 74}a^{3}-\frac{19\cdots 91}{10\cdots 87}a^{2}+\frac{28\cdots 08}{10\cdots 87}a+\frac{92\cdots 79}{32\cdots 22}$, $\frac{13\cdots 07}{10\cdots 87}a^{14}-\frac{73\cdots 24}{10\cdots 87}a^{13}-\frac{27\cdots 09}{21\cdots 74}a^{12}+\frac{16\cdots 07}{32\cdots 22}a^{11}+\frac{58\cdots 20}{10\cdots 87}a^{10}-\frac{13\cdots 02}{10\cdots 87}a^{9}-\frac{12\cdots 89}{10\cdots 87}a^{8}+\frac{84\cdots 61}{10\cdots 87}a^{7}+\frac{14\cdots 12}{10\cdots 87}a^{6}+\frac{19\cdots 45}{21\cdots 74}a^{5}-\frac{58\cdots 90}{10\cdots 87}a^{4}-\frac{20\cdots 11}{21\cdots 74}a^{3}-\frac{58\cdots 65}{21\cdots 74}a^{2}+\frac{24\cdots 35}{10\cdots 87}a+\frac{71\cdots 73}{16\cdots 61}$, $\frac{11\cdots 83}{10\cdots 87}a^{14}-\frac{58\cdots 81}{10\cdots 87}a^{13}-\frac{22\cdots 31}{21\cdots 74}a^{12}+\frac{12\cdots 31}{32\cdots 22}a^{11}+\frac{96\cdots 39}{21\cdots 74}a^{10}-\frac{20\cdots 59}{21\cdots 74}a^{9}-\frac{10\cdots 85}{10\cdots 87}a^{8}+\frac{56\cdots 26}{10\cdots 87}a^{7}+\frac{11\cdots 69}{10\cdots 87}a^{6}+\frac{18\cdots 33}{21\cdots 74}a^{5}-\frac{48\cdots 68}{10\cdots 87}a^{4}-\frac{88\cdots 17}{10\cdots 87}a^{3}-\frac{56\cdots 95}{21\cdots 74}a^{2}+\frac{41\cdots 93}{21\cdots 74}a+\frac{14\cdots 21}{32\cdots 22}$, $\frac{98\cdots 11}{21\cdots 74}a^{14}-\frac{52\cdots 49}{21\cdots 74}a^{13}-\frac{10\cdots 37}{21\cdots 74}a^{12}+\frac{59\cdots 83}{32\cdots 22}a^{11}+\frac{21\cdots 25}{10\cdots 87}a^{10}-\frac{48\cdots 36}{10\cdots 87}a^{9}-\frac{47\cdots 58}{10\cdots 87}a^{8}+\frac{59\cdots 11}{21\cdots 74}a^{7}+\frac{52\cdots 36}{10\cdots 87}a^{6}+\frac{35\cdots 95}{10\cdots 87}a^{5}-\frac{43\cdots 89}{21\cdots 74}a^{4}-\frac{75\cdots 19}{21\cdots 74}a^{3}-\frac{20\cdots 63}{21\cdots 74}a^{2}+\frac{94\cdots 48}{10\cdots 87}a+\frac{27\cdots 53}{16\cdots 61}$, $\frac{16\cdots 54}{10\cdots 87}a^{14}-\frac{11\cdots 46}{10\cdots 87}a^{13}-\frac{30\cdots 73}{21\cdots 74}a^{12}+\frac{13\cdots 22}{16\cdots 61}a^{11}+\frac{11\cdots 89}{21\cdots 74}a^{10}-\frac{25\cdots 80}{10\cdots 87}a^{9}-\frac{12\cdots 04}{10\cdots 87}a^{8}+\frac{28\cdots 42}{10\cdots 87}a^{7}+\frac{14\cdots 47}{10\cdots 87}a^{6}-\frac{15\cdots 75}{21\cdots 74}a^{5}-\frac{14\cdots 35}{21\cdots 74}a^{4}-\frac{80\cdots 21}{21\cdots 74}a^{3}+\frac{70\cdots 11}{10\cdots 87}a^{2}+\frac{73\cdots 59}{21\cdots 74}a-\frac{37\cdots 53}{16\cdots 61}$ Copy content Toggle raw display (assuming GRH)
Copy content comment:Fundamental units
 
Copy content sage:UK.fundamental_units()
 
Copy content gp:K.fu
 
Copy content magma:[K|fUK(g): g in Generators(UK)];
 
Copy content oscar:[K(fUK(a)) for a in gens(UK)]
 
Regulator:  \( 5252645612.166227 \) (assuming GRH)
Copy content comment:Regulator
 
Copy content sage:K.regulator()
 
Copy content gp:K.reg
 
Copy content magma:Regulator(K);
 
Copy content oscar:regulator(K)
 

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{15}\cdot(2\pi)^{0}\cdot 5252645612.166227 \cdot 3}{2\cdot\sqrt{3091133177133909578645502426129}}\cr\approx \mathstrut & 0.146845430370137 \end{aligned}\] (assuming GRH)

Copy content comment:Analytic class number formula
 
Copy content sage:# self-contained SageMath code snippet to compute the analytic class number formula x = polygen(QQ); K.<a> = NumberField(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403) DK = K.disc(); r1,r2 = K.signature(); RK = K.regulator(); RR = RK.parent() hK = K.class_number(); wK = K.unit_group().torsion_generator().order(); 2^r1 * (2*RR(pi))^r2 * RK * hK / (wK * RR(sqrt(abs(DK))))
 
Copy content gp:\\ self-contained Pari/GP code snippet to compute the analytic class number formula K = bnfinit(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403, 1); [polcoeff (lfunrootres (lfuncreate (K))[1][1][2], -1), 2^K.r1 * (2*Pi)^K.r2 * K.reg * K.no / (K.tu[1] * sqrt (abs (K.disc)))]
 
Copy content magma:/* self-contained Magma code snippet to compute the analytic class number formula */ Qx<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403); OK := Integers(K); DK := Discriminant(OK); UK, fUK := UnitGroup(OK); clK, fclK := ClassGroup(OK); r1,r2 := Signature(K); RK := Regulator(K); RR := Parent(RK); hK := #clK; wK := #TorsionSubgroup(UK); 2^r1 * (2*Pi(RR))^r2 * RK * hK / (wK * Sqrt(RR!Abs(DK)));
 
Copy content oscar:# self-contained Oscar code snippet to compute the analytic class number formula Qx, x = polynomial_ring(QQ); K, a = number_field(x^15 - 3*x^14 - 114*x^13 + 165*x^12 + 5277*x^11 + 309*x^10 - 119015*x^9 - 163851*x^8 + 1201692*x^7 + 3201011*x^6 - 2654712*x^5 - 17750946*x^4 - 19922550*x^3 - 3294435*x^2 + 4535715*x + 831403); OK = ring_of_integers(K); DK = discriminant(OK); UK, fUK = unit_group(OK); clK, fclK = class_group(OK); r1,r2 = signature(K); RK = regulator(K); RR = parent(RK); hK = order(clK); wK = torsion_units_order(K); 2^r1 * (2*pi)^r2 * RK * hK / (wK * sqrt(RR(abs(DK))))
 

Galois group

$C_{15}$ (as 15T1):

Copy content comment:Galois group
 
Copy content sage:K.galois_group()
 
Copy content gp:polgalois(K.pol)
 
Copy content magma:G = GaloisGroup(K);
 
Copy content oscar:G, Gtx = galois_group(K); degree(K) > 1 ? (G, transitive_group_identification(G)) : (G, nothing)
 
A cyclic group of order 15
The 15 conjugacy class representatives for $C_{15}$
Character table for $C_{15}$

Intermediate fields

3.3.3969.1, \(\Q(\zeta_{11})^+\)

Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.

Copy content comment:Intermediate fields
 
Copy content sage:K.subfields()[1:-1]
 
Copy content gp:L = nfsubfields(K); L[2..length(L)]
 
Copy content magma:L := Subfields(K); L[2..#L];
 
Copy content oscar:subfields(K)[2:end-1]
 

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 $15$ R R $15$ $15$ $15$ ${\href{/padicField/23.3.0.1}{3} }^{5}$ $15$ ${\href{/padicField/31.5.0.1}{5} }^{3}$ $15$ $15$ ${\href{/padicField/43.3.0.1}{3} }^{5}$ ${\href{/padicField/47.5.0.1}{5} }^{3}$ $15$ ${\href{/padicField/59.5.0.1}{5} }^{3}$

In the table, R denotes a ramified prime. Cycle lengths which are repeated in a cycle type are indicated by exponents.

Copy content comment:Frobenius cycle types
 
Copy content sage:# to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Sage: p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
Copy content gp:\\ to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Pari: p = 7; pfac = idealprimedec(K, p); vector(length(pfac), j, [pfac[j][3], pfac[j][4]])
 
Copy content magma:// to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Magma: p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];
 
Copy content oscar:# to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Oscar: p = 7; pfac = factor(ideal(ring_of_integers(K), p)); [(e, valuation(norm(pr),p)) for (pr,e) in pfac]
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
\(3\) Copy content Toggle raw display 3.5.3.20a2.3$x^{15} + 6 x^{11} + 9 x^{10} + 12 x^{7} + 36 x^{6} + 15 x^{5} + 8 x^{3} + 36 x^{2} + 30 x + 28$$3$$5$$20$$C_{15}$$$[2]^{5}$$
\(7\) Copy content Toggle raw display 7.5.3.10a1.1$x^{15} + 3 x^{11} + 12 x^{10} + 3 x^{7} + 24 x^{6} + 48 x^{5} + x^{3} + 19 x^{2} + 48 x + 64$$3$$5$$10$$C_{15}$$$[\ ]_{3}^{5}$$
\(11\) Copy content Toggle raw display 11.3.5.12a1.4$x^{15} + 10 x^{13} + 45 x^{12} + 40 x^{11} + 360 x^{10} + 890 x^{9} + 1080 x^{8} + 4940 x^{7} + 8730 x^{6} + 9752 x^{5} + 29880 x^{4} + 39285 x^{3} + 29160 x^{2} + 65610 x + 59060$$5$$3$$12$$C_{15}$$$[\ ]_{5}^{3}$$

Spectrum of ring of integers

(0)(0)(2)(3)(5)(7)(11)(13)(17)(19)(23)(29)(31)(37)(41)(43)(47)(53)(59)