Properties

Label 756.4.j.b
Level $756$
Weight $4$
Character orbit 756.j
Analytic conductor $44.605$
Analytic rank $0$
Dimension $18$
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] = [756,4,Mod(253,756)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(756, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 2, 0]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("756.253");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 756 = 2^{2} \cdot 3^{3} \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 756.j (of order \(3\), degree \(2\), not 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: \(44.6054439643\)
Analytic rank: \(0\)
Dimension: \(18\)
Relative dimension: \(9\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\mathbb{Q}[x]/(x^{18} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{18} - 7 x^{17} + 81 x^{16} - 470 x^{15} + 2687 x^{14} - 12243 x^{13} + 43732 x^{12} + \cdots + 5500612092612 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{17}]\)
Coefficient ring index: \( 2^{6}\cdot 3^{22} \)
Twist minimal: no (minimal twist has level 252)
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{17}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\beta_{2} - \beta_1) q^{5} + ( - 7 \beta_1 - 7) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + (\beta_{2} - \beta_1) q^{5} + ( - 7 \beta_1 - 7) q^{7} + (\beta_{10} + \beta_{5} + 10 \beta_1 + 10) q^{11} + (\beta_{17} + \beta_{16} + \cdots + 2 \beta_1) q^{13}+ \cdots + (2 \beta_{13} - 7 \beta_{12} + \cdots + 105) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 18 q + 6 q^{5} - 63 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 18 q + 6 q^{5} - 63 q^{7} + 93 q^{11} - 18 q^{13} + 54 q^{17} - 90 q^{19} + 246 q^{23} - 315 q^{25} + 318 q^{29} - 18 q^{31} - 84 q^{35} - 72 q^{37} + 57 q^{41} - 171 q^{43} + 1056 q^{47} - 441 q^{49} - 1512 q^{53} - 1800 q^{55} + 411 q^{59} - 198 q^{61} + 1326 q^{65} - 441 q^{67} - 3516 q^{71} + 54 q^{73} + 651 q^{77} + 72 q^{79} + 558 q^{83} - 1008 q^{85} - 2784 q^{89} + 252 q^{91} + 156 q^{95} + 909 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{18} - 7 x^{17} + 81 x^{16} - 470 x^{15} + 2687 x^{14} - 12243 x^{13} + 43732 x^{12} + \cdots + 5500612092612 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( - 13315800857 \nu^{17} - 468924789381 \nu^{16} + 3153303989877 \nu^{15} + \cdots - 11\!\cdots\!28 ) / 28\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 9988724986 \nu^{17} + 2313647830569 \nu^{16} - 16444663818747 \nu^{15} + \cdots + 46\!\cdots\!90 ) / 14\!\cdots\!80 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( - 146226447643 \nu^{17} - 7268066260941 \nu^{16} + 50210953821825 \nu^{15} + \cdots - 16\!\cdots\!24 ) / 28\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 278860848133 \nu^{17} - 11888867871249 \nu^{16} + 87937182313725 \nu^{15} + \cdots - 19\!\cdots\!76 ) / 28\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 52446298994 \nu^{17} + 1450917493401 \nu^{16} - 10638858706899 \nu^{15} + \cdots + 23\!\cdots\!02 ) / 47\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 5924783639 \nu^{17} - 49836366303 \nu^{16} + 329733563655 \nu^{15} + \cdots - 19\!\cdots\!32 ) / 14\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 169672952 \nu^{17} - 1036772391 \nu^{16} + 8301427305 \nu^{15} - 39329131417 \nu^{14} + \cdots + 45\!\cdots\!66 ) / 14\!\cdots\!40 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 43515894851 \nu^{17} + 218458409478 \nu^{16} - 1353774191736 \nu^{15} + \cdots + 11\!\cdots\!94 ) / 36\!\cdots\!20 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 1800312252956 \nu^{17} + 3150639639357 \nu^{16} - 10194755353275 \nu^{15} + \cdots + 34\!\cdots\!78 ) / 14\!\cdots\!80 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 1805061544958 \nu^{17} - 6203458758963 \nu^{16} + 49762273316289 \nu^{15} + \cdots + 14\!\cdots\!70 ) / 14\!\cdots\!80 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 22029359983 \nu^{17} + 310091330376 \nu^{16} - 2336357942082 \nu^{15} + \cdots + 32\!\cdots\!38 ) / 12\!\cdots\!40 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 415942152611 \nu^{17} + 5260605596049 \nu^{16} - 38742103153041 \nu^{15} + \cdots + 50\!\cdots\!28 ) / 21\!\cdots\!20 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 927851554363 \nu^{17} - 7150672575030 \nu^{16} + 45993207313464 \nu^{15} + \cdots - 29\!\cdots\!18 ) / 47\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( - 743381512 \nu^{17} + 5134833501 \nu^{16} - 40642013235 \nu^{15} + 209874551987 \nu^{14} + \cdots - 38\!\cdots\!06 ) / 28\!\cdots\!80 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( - 582801871453 \nu^{17} + 2138618755743 \nu^{16} - 18863089527999 \nu^{15} + \cdots - 39\!\cdots\!20 ) / 21\!\cdots\!20 \) Copy content Toggle raw display
\(\beta_{16}\)\(=\) \( ( - 1334581410325 \nu^{17} + 21626434546584 \nu^{16} - 161416316490294 \nu^{15} + \cdots + 25\!\cdots\!14 ) / 47\!\cdots\!60 \) Copy content Toggle raw display
\(\beta_{17}\)\(=\) \( ( - 331615208 \nu^{17} + 2224971849 \nu^{16} - 17523366855 \nu^{15} + 88677743623 \nu^{14} + \cdots - 29\!\cdots\!54 ) / 95\!\cdots\!60 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( - \beta_{17} + \beta_{15} + \beta_{14} - \beta_{12} - 2 \beta_{10} + 2 \beta_{9} - \beta_{5} + \cdots + 9 ) / 27 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 8 \beta_{17} + \beta_{15} - 8 \beta_{14} - 9 \beta_{13} - \beta_{12} - 2 \beta_{10} - 7 \beta_{9} + \cdots - 159 ) / 27 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( - 16 \beta_{17} - 9 \beta_{16} - 2 \beta_{15} - 29 \beta_{14} - 36 \beta_{13} + 8 \beta_{12} + \cdots + 147 ) / 27 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( - 55 \beta_{17} - 90 \beta_{16} - 116 \beta_{15} + 307 \beta_{14} - 153 \beta_{13} - 124 \beta_{12} + \cdots + 2568 ) / 27 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 569 \beta_{17} - 729 \beta_{16} - 371 \beta_{15} + 889 \beta_{14} - 1413 \beta_{13} - 835 \beta_{12} + \cdots + 9417 ) / 27 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 7760 \beta_{17} - 2763 \beta_{16} - 2270 \beta_{15} - 4241 \beta_{14} - 3762 \beta_{13} - 1297 \beta_{12} + \cdots + 132897 ) / 27 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 18316 \beta_{17} + 14382 \beta_{16} - 4076 \beta_{15} + 3448 \beta_{14} + 2709 \beta_{13} + \cdots + 1887114 ) / 27 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( - 375487 \beta_{17} + 252936 \beta_{16} + 135979 \beta_{15} + 86425 \beta_{14} + 87228 \beta_{13} + \cdots + 9296634 ) / 27 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( - 1428019 \beta_{17} + 2074131 \beta_{16} + 1159378 \beta_{15} - 628994 \beta_{14} + 707607 \beta_{13} + \cdots + 3540216 ) / 27 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( - 2724337 \beta_{17} + 10909746 \beta_{16} + 4371652 \beta_{15} - 5475635 \beta_{14} + \cdots - 176781417 ) / 27 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( - 24976375 \beta_{17} + 50054868 \beta_{16} + 8253907 \beta_{15} - 5302991 \beta_{14} + \cdots - 893121963 ) / 27 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( - 239075134 \beta_{17} + 246246336 \beta_{16} - 978401 \beta_{15} + 125712322 \beta_{14} + \cdots - 6926970876 ) / 27 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 1201605958 \beta_{17} + 929523348 \beta_{16} - 7328690 \beta_{15} + 915168421 \beta_{14} + \cdots - 71642581836 ) / 27 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 6364702087 \beta_{17} + 4038981084 \beta_{16} + 32237305 \beta_{15} + 3358354849 \beta_{14} + \cdots - 506585417388 ) / 27 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 40089048757 \beta_{17} + 34933177305 \beta_{16} + 444344101 \beta_{15} + 14519359861 \beta_{14} + \cdots - 2092446241512 ) / 27 \) Copy content Toggle raw display
\(\nu^{16}\)\(=\) \( ( - 201137806810 \beta_{17} + 293540400405 \beta_{16} + 60609850129 \beta_{15} + 35687388529 \beta_{14} + \cdots - 6978267699261 ) / 27 \) Copy content Toggle raw display
\(\nu^{17}\)\(=\) \( ( - 615404548996 \beta_{17} + 1986138294795 \beta_{16} + 798336468241 \beta_{15} - 704823786875 \beta_{14} + \cdots - 41689486691016 ) / 27 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/756\mathbb{Z}\right)^\times\).

\(n\) \(29\) \(325\) \(379\)
\(\chi(n)\) \(\beta_{1}\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
253.1
−2.16791 + 4.11878i
−0.208655 5.05363i
2.54993 + 4.95961i
−0.0672952 5.08536i
−4.09635 + 1.01354i
6.01410 + 1.36338i
0.0652281 + 5.11138i
4.38317 3.94388i
−2.97222 3.34985i
−2.16791 4.11878i
−0.208655 + 5.05363i
2.54993 4.95961i
−0.0672952 + 5.08536i
−4.09635 1.01354i
6.01410 1.36338i
0.0652281 5.11138i
4.38317 + 3.94388i
−2.97222 + 3.34985i
0 0 0 −8.76630 + 15.1837i 0 −3.50000 6.06218i 0 0 0
253.2 0 0 0 −7.66838 + 13.2820i 0 −3.50000 6.06218i 0 0 0
253.3 0 0 0 −3.85902 + 6.68401i 0 −3.50000 6.06218i 0 0 0
253.4 0 0 0 −1.60891 + 2.78671i 0 −3.50000 6.06218i 0 0 0
253.5 0 0 0 −0.184423 + 0.319430i 0 −3.50000 6.06218i 0 0 0
253.6 0 0 0 0.333146 0.577025i 0 −3.50000 6.06218i 0 0 0
253.7 0 0 0 7.13443 12.3572i 0 −3.50000 6.06218i 0 0 0
253.8 0 0 0 8.26221 14.3106i 0 −3.50000 6.06218i 0 0 0
253.9 0 0 0 9.35724 16.2072i 0 −3.50000 6.06218i 0 0 0
505.1 0 0 0 −8.76630 15.1837i 0 −3.50000 + 6.06218i 0 0 0
505.2 0 0 0 −7.66838 13.2820i 0 −3.50000 + 6.06218i 0 0 0
505.3 0 0 0 −3.85902 6.68401i 0 −3.50000 + 6.06218i 0 0 0
505.4 0 0 0 −1.60891 2.78671i 0 −3.50000 + 6.06218i 0 0 0
505.5 0 0 0 −0.184423 0.319430i 0 −3.50000 + 6.06218i 0 0 0
505.6 0 0 0 0.333146 + 0.577025i 0 −3.50000 + 6.06218i 0 0 0
505.7 0 0 0 7.13443 + 12.3572i 0 −3.50000 + 6.06218i 0 0 0
505.8 0 0 0 8.26221 + 14.3106i 0 −3.50000 + 6.06218i 0 0 0
505.9 0 0 0 9.35724 + 16.2072i 0 −3.50000 + 6.06218i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 253.9
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
9.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 756.4.j.b 18
3.b odd 2 1 252.4.j.b 18
9.c even 3 1 inner 756.4.j.b 18
9.c even 3 1 2268.4.a.h 9
9.d odd 6 1 252.4.j.b 18
9.d odd 6 1 2268.4.a.i 9
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
252.4.j.b 18 3.b odd 2 1
252.4.j.b 18 9.d odd 6 1
756.4.j.b 18 1.a even 1 1 trivial
756.4.j.b 18 9.c even 3 1 inner
2268.4.a.h 9 9.c even 3 1
2268.4.a.i 9 9.d odd 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{18} - 6 T_{5}^{17} + 738 T_{5}^{16} - 1368 T_{5}^{15} + 352323 T_{5}^{14} - 281502 T_{5}^{13} + \cdots + 52444912836996 \) acting on \(S_{4}^{\mathrm{new}}(756, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{18} \) Copy content Toggle raw display
$3$ \( T^{18} \) Copy content Toggle raw display
$5$ \( T^{18} + \cdots + 52444912836996 \) Copy content Toggle raw display
$7$ \( (T^{2} + 7 T + 49)^{9} \) Copy content Toggle raw display
$11$ \( T^{18} + \cdots + 77\!\cdots\!00 \) Copy content Toggle raw display
$13$ \( T^{18} + \cdots + 18\!\cdots\!16 \) Copy content Toggle raw display
$17$ \( (T^{9} + \cdots + 109582832291940)^{2} \) Copy content Toggle raw display
$19$ \( (T^{9} + \cdots - 20\!\cdots\!75)^{2} \) Copy content Toggle raw display
$23$ \( T^{18} + \cdots + 43\!\cdots\!96 \) Copy content Toggle raw display
$29$ \( T^{18} + \cdots + 32\!\cdots\!84 \) Copy content Toggle raw display
$31$ \( T^{18} + \cdots + 20\!\cdots\!76 \) Copy content Toggle raw display
$37$ \( (T^{9} + \cdots - 12\!\cdots\!48)^{2} \) Copy content Toggle raw display
$41$ \( T^{18} + \cdots + 19\!\cdots\!96 \) Copy content Toggle raw display
$43$ \( T^{18} + \cdots + 16\!\cdots\!84 \) Copy content Toggle raw display
$47$ \( T^{18} + \cdots + 20\!\cdots\!00 \) Copy content Toggle raw display
$53$ \( (T^{9} + \cdots + 62\!\cdots\!32)^{2} \) Copy content Toggle raw display
$59$ \( T^{18} + \cdots + 51\!\cdots\!84 \) Copy content Toggle raw display
$61$ \( T^{18} + \cdots + 73\!\cdots\!00 \) Copy content Toggle raw display
$67$ \( T^{18} + \cdots + 49\!\cdots\!44 \) Copy content Toggle raw display
$71$ \( (T^{9} + \cdots - 35\!\cdots\!40)^{2} \) Copy content Toggle raw display
$73$ \( (T^{9} + \cdots - 11\!\cdots\!96)^{2} \) Copy content Toggle raw display
$79$ \( T^{18} + \cdots + 62\!\cdots\!00 \) Copy content Toggle raw display
$83$ \( T^{18} + \cdots + 82\!\cdots\!00 \) Copy content Toggle raw display
$89$ \( (T^{9} + \cdots - 28\!\cdots\!40)^{2} \) Copy content Toggle raw display
$97$ \( T^{18} + \cdots + 82\!\cdots\!00 \) Copy content Toggle raw display
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