Properties

Label 930.2.bg.e
Level $930$
Weight $2$
Character orbit 930.bg
Analytic conductor $7.426$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [930,2,Mod(121,930)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(930, base_ring=CyclotomicField(30))
 
chi = DirichletCharacter(H, H._module([0, 0, 16]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("930.121");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 930 = 2 \cdot 3 \cdot 5 \cdot 31 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 930.bg (of order \(15\), degree \(8\), minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(7.42608738798\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(2\) over \(\Q(\zeta_{15})\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 27x^{14} + 345x^{12} - 2652x^{10} + 13244x^{8} - 43398x^{6} + 89940x^{4} - 107433x^{2} + 58081 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{15}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{9} q^{2} + (\beta_{12} - \beta_{10} + \beta_{9} + \cdots - 1) q^{3}+ \cdots - \beta_{4} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{9} q^{2} + (\beta_{12} - \beta_{10} + \beta_{9} + \cdots - 1) q^{3}+ \cdots + ( - \beta_{14} - \beta_{13} + \cdots - \beta_{3}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 4 q^{2} - 2 q^{3} - 4 q^{4} + 8 q^{5} - 8 q^{6} - 5 q^{7} + 4 q^{8} + 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 4 q^{2} - 2 q^{3} - 4 q^{4} + 8 q^{5} - 8 q^{6} - 5 q^{7} + 4 q^{8} + 2 q^{9} + 2 q^{10} - 4 q^{11} - 2 q^{12} + 4 q^{13} - 10 q^{14} - 4 q^{15} - 4 q^{16} - 22 q^{17} - 2 q^{18} - 3 q^{19} - 2 q^{20} - 11 q^{22} + 9 q^{23} + 2 q^{24} - 8 q^{25} + 11 q^{26} + 4 q^{27} - 3 q^{29} - 16 q^{30} - 15 q^{31} - 16 q^{32} - 8 q^{33} - 8 q^{34} + 5 q^{35} - 8 q^{36} - 17 q^{37} - 2 q^{38} + 3 q^{39} + 2 q^{40} + 28 q^{41} + 10 q^{42} - 28 q^{43} - 19 q^{44} - 2 q^{45} - 9 q^{46} + 9 q^{47} - 2 q^{48} + 19 q^{49} - 2 q^{50} + 22 q^{51} + 4 q^{52} + 2 q^{53} - 4 q^{54} - 11 q^{55} + 5 q^{56} - 2 q^{57} - 12 q^{58} + 24 q^{59} - 4 q^{60} - 40 q^{61} - 25 q^{62} + 10 q^{63} - 4 q^{64} - 4 q^{65} - 7 q^{66} - q^{67} - 2 q^{68} - 3 q^{69} - 5 q^{70} + 39 q^{71} - 2 q^{72} + 81 q^{73} - 8 q^{74} - 2 q^{75} + 2 q^{76} + 28 q^{77} - 8 q^{78} + 64 q^{79} - 2 q^{80} + 2 q^{81} + 32 q^{82} - 40 q^{83} + 5 q^{84} - 14 q^{85} + 13 q^{86} - 9 q^{87} - q^{88} - 7 q^{89} + 2 q^{90} - 46 q^{91} - 36 q^{92} - 20 q^{93} - 4 q^{94} - 6 q^{95} + 2 q^{96} - 17 q^{97} - 9 q^{98} + q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 27x^{14} + 345x^{12} - 2652x^{10} + 13244x^{8} - 43398x^{6} + 89940x^{4} - 107433x^{2} + 58081 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( - 481 \nu^{14} + 10935 \nu^{12} - 120641 \nu^{10} + 792237 \nu^{8} - 3303859 \nu^{6} + \cdots + 8734563 ) / 323698 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 481 \nu^{14} - 10935 \nu^{12} + 120641 \nu^{10} - 792237 \nu^{8} + 3303859 \nu^{6} - 8551395 \nu^{4} + \cdots - 8734563 ) / 323698 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( - 879144720 \nu^{15} - 3144854790 \nu^{14} + 13836683352 \nu^{13} + 78024201152 \nu^{12} + \cdots + 59040737512289 ) / 11901469429298 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 879144720 \nu^{15} + 3144854790 \nu^{14} + 13836683352 \nu^{13} - 78024201152 \nu^{12} + \cdots - 59040737512289 ) / 11901469429298 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 879144720 \nu^{15} - 10804470307 \nu^{14} + 13836683352 \nu^{13} + 249798214715 \nu^{12} + \cdots + 44600586148174 ) / 11901469429298 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 1761178984 \nu^{15} + 11368095320 \nu^{14} - 44779737057 \nu^{13} - 280055462260 \nu^{12} + \cdots - 230349536745774 ) / 11901469429298 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 11502471 \nu^{15} - 100754402 \nu^{14} - 302430222 \nu^{13} + 2300277459 \nu^{12} + \cdots + 1379612638329 ) / 49383690578 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 13049190 \nu^{15} - 41079768 \nu^{14} - 323751872 \nu^{13} + 888074667 \nu^{12} + \cdots + 211873877520 ) / 49383690578 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 158509246 \nu^{15} + 204032769 \nu^{14} - 3519708183 \nu^{13} - 5203789126 \nu^{12} + \cdots - 4537175879612 ) / 410395497562 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 167082381 \nu^{15} + 204032769 \nu^{14} - 4015307501 \nu^{13} - 5203789126 \nu^{12} + \cdots - 4742373628393 ) / 410395497562 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 167082381 \nu^{15} + 204032769 \nu^{14} + 4015307501 \nu^{13} - 5203789126 \nu^{12} + \cdots - 4742373628393 ) / 410395497562 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 36243 \nu^{15} - 862640 \nu^{13} + 9868500 \nu^{11} - 67041955 \nu^{9} + 289073175 \nu^{7} + \cdots + 39005609 ) / 78011218 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( 846609 \nu^{15} + 2057746 \nu^{14} - 21592486 \nu^{13} - 48696648 \nu^{12} + 256411089 \nu^{11} + \cdots - 40266853821 ) / 1702885882 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 6135024293 \nu^{15} + 13352156499 \nu^{14} - 144306881117 \nu^{13} - 288319318279 \nu^{12} + \cdots - 33115752912402 ) / 11901469429298 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( - 6229064855 \nu^{15} - 4449079069 \nu^{14} + 149688381624 \nu^{13} + \cdots - 41759097040057 ) / 11901469429298 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_{2} + \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{15} - \beta_{11} + \beta_{8} - \beta_{6} - \beta_{5} + \beta_{4} - \beta _1 + 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{15} - \beta_{13} + 4 \beta_{12} - 5 \beta_{10} + 6 \beta_{9} - \beta_{7} - \beta_{6} + 5 \beta_{4} + \cdots - 5 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( 8 \beta_{15} + \beta_{13} - \beta_{12} - 7 \beta_{11} + 2 \beta_{10} - \beta_{9} + 7 \beta_{8} + \cdots + 9 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( 10 \beta_{15} - 4 \beta_{13} + 21 \beta_{12} - 5 \beta_{11} - 36 \beta_{10} + 51 \beta_{9} - 6 \beta_{8} + \cdots - 36 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 42 \beta_{15} + 15 \beta_{13} - 4 \beta_{12} - 21 \beta_{11} + 25 \beta_{10} - 4 \beta_{9} + 27 \beta_{8} + \cdots - 28 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 56 \beta_{15} - 26 \beta_{14} + 15 \beta_{13} + 39 \beta_{12} - 77 \beta_{11} - 138 \beta_{10} + \cdots - 155 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( 138 \beta_{15} + 120 \beta_{13} + 67 \beta_{12} + 110 \beta_{11} + 181 \beta_{10} + 67 \beta_{9} + \cdots - 438 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( 153 \beta_{15} - 402 \beta_{14} + 345 \beta_{13} - 172 \beta_{12} - 614 \beta_{11} - 211 \beta_{10} + \cdots - 403 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( - 33 \beta_{15} + 566 \beta_{13} + 1149 \beta_{12} + 2089 \beta_{11} + 907 \beta_{10} + 1149 \beta_{9} + \cdots - 2578 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( - 413 \beta_{15} - 3342 \beta_{14} + 2841 \beta_{13} - 948 \beta_{12} - 2786 \beta_{11} + 963 \beta_{10} + \cdots - 231 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( - 4536 \beta_{15} + 702 \beta_{13} + 9525 \beta_{12} + 16543 \beta_{11} + 2482 \beta_{10} + 9525 \beta_{9} + \cdots - 8380 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( - 6889 \beta_{15} - 17220 \beta_{14} + 13966 \beta_{13} + 7188 \beta_{12} - 1893 \beta_{11} + \cdots + 3249 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( - 40193 \beta_{15} - 13606 \beta_{13} + 48406 \beta_{12} + 79494 \beta_{11} - 9105 \beta_{10} + \cdots - 374 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( - 33940 \beta_{15} - 36120 \beta_{14} + 24745 \beta_{13} + 119836 \beta_{12} + 84770 \beta_{11} + \cdots + 23912 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/930\mathbb{Z}\right)^\times\).

\(n\) \(187\) \(311\) \(871\)
\(\chi(n)\) \(1\) \(1\) \(-\beta_{4}\)

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
121.1
−2.08547 0.994522i
2.08547 0.994522i
2.29670 0.743145i
−2.29670 0.743145i
1.37050 0.406737i
−1.37050 0.406737i
1.37050 + 0.406737i
−1.37050 + 0.406737i
2.29670 + 0.743145i
−2.29670 + 0.743145i
−2.08547 + 0.994522i
2.08547 + 0.994522i
−1.93590 + 0.207912i
1.93590 + 0.207912i
−1.93590 0.207912i
1.93590 0.207912i
0.809017 0.587785i 0.104528 0.994522i 0.309017 0.951057i 0.500000 0.866025i −0.500000 0.866025i −4.44421 + 0.944645i −0.309017 0.951057i −0.978148 0.207912i −0.104528 0.994522i
121.2 0.809017 0.587785i 0.104528 0.994522i 0.309017 0.951057i 0.500000 0.866025i −0.500000 0.866025i 2.15704 0.458493i −0.309017 0.951057i −0.978148 0.207912i −0.104528 0.994522i
361.1 −0.309017 0.951057i −0.669131 0.743145i −0.809017 + 0.587785i 0.500000 + 0.866025i −0.500000 + 0.866025i −0.296127 2.81746i 0.809017 + 0.587785i −0.104528 + 0.994522i 0.669131 0.743145i
361.2 −0.309017 0.951057i −0.669131 0.743145i −0.809017 + 0.587785i 0.500000 + 0.866025i −0.500000 + 0.866025i 0.000615948 0.00586036i 0.809017 + 0.587785i −0.104528 + 0.994522i 0.669131 0.743145i
391.1 0.809017 + 0.587785i −0.913545 0.406737i 0.309017 + 0.951057i 0.500000 0.866025i −0.500000 0.866025i −1.80375 + 2.00327i −0.309017 + 0.951057i 0.669131 + 0.743145i 0.913545 0.406737i
391.2 0.809017 + 0.587785i −0.913545 0.406737i 0.309017 + 0.951057i 0.500000 0.866025i −0.500000 0.866025i 1.16386 1.29260i −0.309017 + 0.951057i 0.669131 + 0.743145i 0.913545 0.406737i
421.1 0.809017 0.587785i −0.913545 + 0.406737i 0.309017 0.951057i 0.500000 + 0.866025i −0.500000 + 0.866025i −1.80375 2.00327i −0.309017 0.951057i 0.669131 0.743145i 0.913545 + 0.406737i
421.2 0.809017 0.587785i −0.913545 + 0.406737i 0.309017 0.951057i 0.500000 + 0.866025i −0.500000 + 0.866025i 1.16386 + 1.29260i −0.309017 0.951057i 0.669131 0.743145i 0.913545 + 0.406737i
541.1 −0.309017 + 0.951057i −0.669131 + 0.743145i −0.809017 0.587785i 0.500000 0.866025i −0.500000 0.866025i −0.296127 + 2.81746i 0.809017 0.587785i −0.104528 0.994522i 0.669131 + 0.743145i
541.2 −0.309017 + 0.951057i −0.669131 + 0.743145i −0.809017 0.587785i 0.500000 0.866025i −0.500000 0.866025i 0.000615948 0.00586036i 0.809017 0.587785i −0.104528 0.994522i 0.669131 + 0.743145i
661.1 0.809017 + 0.587785i 0.104528 + 0.994522i 0.309017 + 0.951057i 0.500000 + 0.866025i −0.500000 + 0.866025i −4.44421 0.944645i −0.309017 + 0.951057i −0.978148 + 0.207912i −0.104528 + 0.994522i
661.2 0.809017 + 0.587785i 0.104528 + 0.994522i 0.309017 + 0.951057i 0.500000 + 0.866025i −0.500000 + 0.866025i 2.15704 + 0.458493i −0.309017 + 0.951057i −0.978148 + 0.207912i −0.104528 + 0.994522i
691.1 −0.309017 + 0.951057i 0.978148 + 0.207912i −0.809017 0.587785i 0.500000 + 0.866025i −0.500000 + 0.866025i −0.731733 + 0.325789i 0.809017 0.587785i 0.913545 + 0.406737i −0.978148 + 0.207912i
691.2 −0.309017 + 0.951057i 0.978148 + 0.207912i −0.809017 0.587785i 0.500000 + 0.866025i −0.500000 + 0.866025i 1.45430 0.647494i 0.809017 0.587785i 0.913545 + 0.406737i −0.978148 + 0.207912i
751.1 −0.309017 0.951057i 0.978148 0.207912i −0.809017 + 0.587785i 0.500000 0.866025i −0.500000 0.866025i −0.731733 0.325789i 0.809017 + 0.587785i 0.913545 0.406737i −0.978148 0.207912i
751.2 −0.309017 0.951057i 0.978148 0.207912i −0.809017 + 0.587785i 0.500000 0.866025i −0.500000 0.866025i 1.45430 + 0.647494i 0.809017 + 0.587785i 0.913545 0.406737i −0.978148 0.207912i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 121.2
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
31.g even 15 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 930.2.bg.e 16
31.g even 15 1 inner 930.2.bg.e 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
930.2.bg.e 16 1.a even 1 1 trivial
930.2.bg.e 16 31.g even 15 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{16} + 5 T_{7}^{15} - 4 T_{7}^{14} - 30 T_{7}^{13} - 35 T_{7}^{12} - 120 T_{7}^{11} + 824 T_{7}^{10} + \cdots + 1 \) acting on \(S_{2}^{\mathrm{new}}(930, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} - T^{3} + T^{2} + \cdots + 1)^{4} \) Copy content Toggle raw display
$3$ \( (T^{8} + T^{7} - T^{5} + \cdots + 1)^{2} \) Copy content Toggle raw display
$5$ \( (T^{2} - T + 1)^{8} \) Copy content Toggle raw display
$7$ \( T^{16} + 5 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{16} + 4 T^{15} + \cdots + 12952801 \) Copy content Toggle raw display
$13$ \( T^{16} - 4 T^{15} + \cdots + 625 \) Copy content Toggle raw display
$17$ \( T^{16} + \cdots + 417344041 \) Copy content Toggle raw display
$19$ \( T^{16} + 3 T^{15} + \cdots + 1113025 \) Copy content Toggle raw display
$23$ \( T^{16} - 9 T^{15} + \cdots + 841 \) Copy content Toggle raw display
$29$ \( T^{16} + 3 T^{15} + \cdots + 72361 \) Copy content Toggle raw display
$31$ \( T^{16} + \cdots + 852891037441 \) Copy content Toggle raw display
$37$ \( T^{16} + \cdots + 1579983001 \) Copy content Toggle raw display
$41$ \( T^{16} - 28 T^{15} + \cdots + 20475625 \) Copy content Toggle raw display
$43$ \( T^{16} + 28 T^{15} + \cdots + 32041 \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 367450561 \) Copy content Toggle raw display
$53$ \( T^{16} + \cdots + 787221435025 \) Copy content Toggle raw display
$59$ \( T^{16} + \cdots + 1596721681 \) Copy content Toggle raw display
$61$ \( (T^{8} + 20 T^{7} + \cdots - 8339)^{2} \) Copy content Toggle raw display
$67$ \( T^{16} + \cdots + 479998166761 \) Copy content Toggle raw display
$71$ \( T^{16} + \cdots + 14311278150625 \) Copy content Toggle raw display
$73$ \( T^{16} + \cdots + 708376405801 \) Copy content Toggle raw display
$79$ \( T^{16} + \cdots + 49171383597361 \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 19217999641 \) Copy content Toggle raw display
$89$ \( T^{16} + \cdots + 12\!\cdots\!25 \) Copy content Toggle raw display
$97$ \( T^{16} + \cdots + 663205420200625 \) Copy content Toggle raw display
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