Properties

Label 1872.2.bi.c
Level $1872$
Weight $2$
Character orbit 1872.bi
Analytic conductor $14.948$
Analytic rank $0$
Dimension $12$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1872,2,Mod(161,1872)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1872, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([0, 0, 2, 3]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1872.161");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1872 = 2^{4} \cdot 3^{2} \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1872.bi (of order \(4\), 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: \(14.9479952584\)
Analytic rank: \(0\)
Dimension: \(12\)
Relative dimension: \(6\) over \(\Q(i)\)
Coefficient field: \(\mathbb{Q}[x]/(x^{12} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{12} - 16x^{10} + 103x^{8} - 260x^{6} + 259x^{4} + 356x^{2} + 169 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{25}]\)
Coefficient ring index: \( 2^{7} \)
Twist minimal: no (minimal twist has level 936)
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{11}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{6} q^{5} + (\beta_{5} - \beta_{4} - 1) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{6} q^{5} + (\beta_{5} - \beta_{4} - 1) q^{7} + (\beta_{11} - \beta_{10} + \cdots + \beta_{8}) q^{11}+ \cdots + (4 \beta_{4} - \beta_{3} + 2 \beta_{2} + \cdots - 4) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 12 q - 16 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 12 q - 16 q^{7} - 4 q^{13} + 16 q^{19} + 40 q^{31} - 4 q^{37} - 96 q^{55} - 72 q^{61} - 24 q^{67} + 20 q^{73} - 32 q^{79} + 8 q^{85} - 88 q^{91} - 36 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{12} - 16x^{10} + 103x^{8} - 260x^{6} + 259x^{4} + 356x^{2} + 169 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 81\nu^{10} - 1627\nu^{8} + 10208\nu^{6} - 16433\nu^{4} - 19201\nu^{2} - 33817 ) / 72651 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 871\nu^{10} - 20784\nu^{8} + 200656\nu^{6} - 908896\nu^{4} + 1694415\nu^{2} - 122962 ) / 435906 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -138\nu^{10} + 1875\nu^{8} - 10216\nu^{6} + 15440\nu^{4} - 30072\nu^{2} - 13243 ) / 48434 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 34\nu^{10} - 531\nu^{8} + 3334\nu^{6} - 8476\nu^{4} + 11310\nu^{2} + 5219 ) / 7146 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 4327\nu^{10} - 74058\nu^{8} + 507040\nu^{6} - 1384012\nu^{4} + 1133487\nu^{2} + 1453232 ) / 435906 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -13135\nu^{11} + 241113\nu^{9} - 1780306\nu^{7} + 5551390\nu^{5} - 6855987\nu^{3} + 5997421\nu ) / 5666778 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 9766\nu^{11} - 171648\nu^{9} + 1365595\nu^{7} - 5617729\nu^{5} + 13810209\nu^{3} - 7912201\nu ) / 2833389 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -2707\nu^{11} + 41518\nu^{9} - 254446\nu^{7} + 571012\nu^{5} - 500393\nu^{3} - 1354628\nu ) / 629642 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 101\nu^{11} - 1668\nu^{9} + 11144\nu^{7} - 30914\nu^{5} + 39861\nu^{3} + 9592\nu ) / 14274 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( -51325\nu^{11} + 794745\nu^{9} - 4933876\nu^{7} + 11860576\nu^{5} - 13472367\nu^{3} - 10663541\nu ) / 5666778 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( -52882\nu^{11} + 893289\nu^{9} - 6176809\nu^{7} + 18058495\nu^{5} - 21689553\nu^{3} - 16977236\nu ) / 2833389 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{10} + \beta_{9} - \beta_{8} + \beta_{6} ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{5} - 2\beta_{3} + \beta_{2} + 2\beta _1 + 4 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 2\beta_{11} + 7\beta_{10} + 8\beta_{9} - 10\beta_{8} + \beta_{7} + \beta_{6} ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -8\beta_{4} - 10\beta_{3} + 2\beta_{2} + 5\beta _1 + 6 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 13\beta_{11} + 43\beta_{10} + 23\beta_{9} - 89\beta_{8} + 7\beta_{7} - 27\beta_{6} ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 33\beta_{5} - 170\beta_{4} - 152\beta_{3} + 23\beta_{2} + 2\beta _1 - 20 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 49\beta_{11} + 177\beta_{10} - 164\beta_{9} - 608\beta_{8} + 70\beta_{7} - 355\beta_{6} ) / 2 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( 167\beta_{5} - 568\beta_{4} - 452\beta_{3} + 29\beta_{2} - 270\beta _1 - 383 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -14\beta_{11} - 115\beta_{10} - 3293\beta_{9} - 3079\beta_{8} + 584\beta_{7} - 2911\beta_{6} ) / 2 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 2313\beta_{5} - 4640\beta_{4} - 3534\beta_{3} - 685\beta_{2} - 6802\beta _1 - 8648 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( -2448\beta_{11} - 11125\beta_{10} - 32218\beta_{9} - 6964\beta_{8} + 3669\beta_{7} - 17659\beta_{6} ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1872\mathbb{Z}\right)^\times\).

\(n\) \(145\) \(209\) \(469\) \(703\)
\(\chi(n)\) \(-\beta_{4}\) \(-1\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
161.1
−1.64111 0.707107i
−2.59708 + 0.707107i
−0.248859 0.707107i
0.248859 + 0.707107i
2.59708 0.707107i
1.64111 + 0.707107i
−1.64111 + 0.707107i
−2.59708 0.707107i
−0.248859 + 0.707107i
0.248859 0.707107i
2.59708 + 0.707107i
1.64111 0.707107i
0 0 0 −2.34822 2.34822i 0 −3.51414 3.51414i 0 0 0
161.2 0 0 0 −1.88997 1.88997i 0 −1.57199 1.57199i 0 0 0
161.3 0 0 0 −0.955965 0.955965i 0 1.08613 + 1.08613i 0 0 0
161.4 0 0 0 0.955965 + 0.955965i 0 1.08613 + 1.08613i 0 0 0
161.5 0 0 0 1.88997 + 1.88997i 0 −1.57199 1.57199i 0 0 0
161.6 0 0 0 2.34822 + 2.34822i 0 −3.51414 3.51414i 0 0 0
593.1 0 0 0 −2.34822 + 2.34822i 0 −3.51414 + 3.51414i 0 0 0
593.2 0 0 0 −1.88997 + 1.88997i 0 −1.57199 + 1.57199i 0 0 0
593.3 0 0 0 −0.955965 + 0.955965i 0 1.08613 1.08613i 0 0 0
593.4 0 0 0 0.955965 0.955965i 0 1.08613 1.08613i 0 0 0
593.5 0 0 0 1.88997 1.88997i 0 −1.57199 + 1.57199i 0 0 0
593.6 0 0 0 2.34822 2.34822i 0 −3.51414 + 3.51414i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 161.6
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
13.d odd 4 1 inner
39.f even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1872.2.bi.c 12
3.b odd 2 1 inner 1872.2.bi.c 12
4.b odd 2 1 936.2.ba.c 12
12.b even 2 1 936.2.ba.c 12
13.d odd 4 1 inner 1872.2.bi.c 12
39.f even 4 1 inner 1872.2.bi.c 12
52.f even 4 1 936.2.ba.c 12
156.l odd 4 1 936.2.ba.c 12
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
936.2.ba.c 12 4.b odd 2 1
936.2.ba.c 12 12.b even 2 1
936.2.ba.c 12 52.f even 4 1
936.2.ba.c 12 156.l odd 4 1
1872.2.bi.c 12 1.a even 1 1 trivial
1872.2.bi.c 12 3.b odd 2 1 inner
1872.2.bi.c 12 13.d odd 4 1 inner
1872.2.bi.c 12 39.f even 4 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1872, [\chi])\):

\( T_{5}^{12} + 176T_{5}^{8} + 6784T_{5}^{4} + 20736 \) Copy content Toggle raw display
\( T_{7}^{6} + 8T_{7}^{5} + 32T_{7}^{4} + 24T_{7}^{3} + 288 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{12} \) Copy content Toggle raw display
$3$ \( T^{12} \) Copy content Toggle raw display
$5$ \( T^{12} + 176 T^{8} + \cdots + 20736 \) Copy content Toggle raw display
$7$ \( (T^{6} + 8 T^{5} + \cdots + 288)^{2} \) Copy content Toggle raw display
$11$ \( T^{12} + \cdots + 136048896 \) Copy content Toggle raw display
$13$ \( (T^{6} + 2 T^{5} + \cdots + 2197)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} - 2)^{6} \) Copy content Toggle raw display
$19$ \( (T^{6} - 8 T^{5} + \cdots + 2592)^{2} \) Copy content Toggle raw display
$23$ \( (T^{6} - 48 T^{4} + \cdots - 128)^{2} \) Copy content Toggle raw display
$29$ \( (T^{6} + 150 T^{4} + \cdots + 52488)^{2} \) Copy content Toggle raw display
$31$ \( (T^{6} - 20 T^{5} + \cdots + 288)^{2} \) Copy content Toggle raw display
$37$ \( (T^{6} + 2 T^{5} + \cdots + 29768)^{2} \) Copy content Toggle raw display
$41$ \( T^{12} + \cdots + 723394816 \) Copy content Toggle raw display
$43$ \( (T^{6} + 144 T^{4} + \cdots + 43264)^{2} \) Copy content Toggle raw display
$47$ \( T^{12} + 3216 T^{8} + \cdots + 256 \) Copy content Toggle raw display
$53$ \( (T^{6} + 102 T^{4} + \cdots + 13448)^{2} \) Copy content Toggle raw display
$59$ \( T^{12} + 34928 T^{8} + \cdots + 20736 \) Copy content Toggle raw display
$61$ \( (T^{3} + 18 T^{2} + \cdots - 424)^{4} \) Copy content Toggle raw display
$67$ \( (T^{6} + 12 T^{5} + \cdots + 2592)^{2} \) Copy content Toggle raw display
$71$ \( T^{12} + \cdots + 11019960576 \) Copy content Toggle raw display
$73$ \( (T^{6} - 10 T^{5} + \cdots + 159048)^{2} \) Copy content Toggle raw display
$79$ \( (T^{3} + 8 T^{2} - 16 T - 32)^{4} \) Copy content Toggle raw display
$83$ \( T^{12} + \cdots + 90182492416 \) Copy content Toggle raw display
$89$ \( T^{12} + 2032 T^{8} + \cdots + 20736 \) Copy content Toggle raw display
$97$ \( (T^{6} + 18 T^{5} + \cdots + 648)^{2} \) Copy content Toggle raw display
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