Properties

Label 405.2.f.a
Level $405$
Weight $2$
Character orbit 405.f
Analytic conductor $3.234$
Analytic rank $0$
Dimension $16$
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] = [405,2,Mod(242,405)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(405, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("405.242");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 405 = 3^{4} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 405.f (of order \(4\), degree \(2\), 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: \(3.23394128186\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 6 x^{15} + 18 x^{14} - 36 x^{13} + 34 x^{12} + 18 x^{11} - 72 x^{10} + 132 x^{9} - 93 x^{8} + \cdots + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{8} \)
Twist minimal: no (minimal twist has level 45)
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 \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{3} q^{2} + ( - \beta_{14} + \beta_{6}) q^{4} - \beta_{4} q^{5} + \beta_{10} q^{7} + ( - \beta_{11} - \beta_{8} + \cdots + \beta_{2}) q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{3} q^{2} + ( - \beta_{14} + \beta_{6}) q^{4} - \beta_{4} q^{5} + \beta_{10} q^{7} + ( - \beta_{11} - \beta_{8} + \cdots + \beta_{2}) q^{8}+ \cdots + ( - \beta_{11} - \beta_{8} + \cdots - 4 \beta_{2}) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 4 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 4 q^{7} - 8 q^{10} + 4 q^{13} + 16 q^{16} + 20 q^{22} - 8 q^{25} - 16 q^{28} + 8 q^{31} + 4 q^{37} - 12 q^{40} + 4 q^{43} + 32 q^{46} + 28 q^{52} - 16 q^{55} + 12 q^{58} - 16 q^{61} - 8 q^{67} - 36 q^{70} - 8 q^{73} - 48 q^{76} + 32 q^{82} - 44 q^{85} - 36 q^{88} - 40 q^{91} - 56 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 6 x^{15} + 18 x^{14} - 36 x^{13} + 34 x^{12} + 18 x^{11} - 72 x^{10} + 132 x^{9} - 93 x^{8} + \cdots + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 73568941 \nu^{15} + 2828429898 \nu^{14} - 10706428236 \nu^{13} + 20127265496 \nu^{12} + \cdots + 10982429182739 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( - 94386116202 \nu^{15} + 619740656932 \nu^{14} - 2033008548312 \nu^{13} + \cdots + 80029143512 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 196858530 \nu^{15} - 1212076232 \nu^{14} + 3734556994 \nu^{13} - 7676123862 \nu^{12} + \cdots + 785074438 ) / 1973128213 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 458282837172 \nu^{15} + 3278355328030 \nu^{14} - 11567438085651 \nu^{13} + \cdots + 3479823499409 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 1263290532917 \nu^{15} + 8307388188784 \nu^{14} - 27291768145635 \nu^{13} + \cdots + 1071789225554 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 1616321538 \nu^{15} - 9938916556 \nu^{14} + 30594542475 \nu^{13} - 62871582510 \nu^{12} + \cdots + 10233974547 ) / 3810388399 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( - 854458 \nu^{15} + 5149288 \nu^{14} - 15489103 \nu^{13} + 31002870 \nu^{12} - 29353426 \nu^{11} + \cdots - 4877403 ) / 1828267 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( - 315552650318 \nu^{15} + 1900582212134 \nu^{14} - 5713442004763 \nu^{13} + \cdots - 1796844761346 ) / 529643987461 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( - 2712751885095 \nu^{15} + 16678491631658 \nu^{14} - 51337065544716 \nu^{13} + \cdots - 23594947704644 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( - 2717282793429 \nu^{15} + 16707385417880 \nu^{14} - 51423315159482 \nu^{13} + \cdots - 10795341151078 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 1570148876 \nu^{15} - 9814610316 \nu^{14} + 30686832232 \nu^{13} - 63994473524 \nu^{12} + \cdots + 4714210963 ) / 1973128213 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 3757574245950 \nu^{15} - 23096381861488 \nu^{14} + 71089447066218 \nu^{13} + \cdots + 32644912196796 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 3758547730578 \nu^{15} + 23113179926128 \nu^{14} - 71146859123410 \nu^{13} + \cdots - 14937505605495 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 4659934396714 \nu^{15} - 28652614036898 \nu^{14} + 88198331151147 \nu^{13} + \cdots + 29503074524823 ) / 3707507912227 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( - 29169335295 \nu^{15} + 179860916164 \nu^{14} - 554518308281 \nu^{13} + 1139653845381 \nu^{12} + \cdots - 116597819081 ) / 22200646181 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{14} + \beta_{10} - \beta_{6} - \beta_{3} - \beta _1 + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{15} + \beta_{14} - \beta_{8} - \beta_{7} - 3\beta_{6} - \beta_{5} - \beta_{3} - \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( -\beta_{11} - \beta_{8} - \beta_{4} - 3\beta_{2} \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( - 5 \beta_{15} + \beta_{13} + \beta_{12} - 9 \beta_{11} + 3 \beta_{5} - 8 \beta_{4} + 5 \beta_{3} + \cdots + 13 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 8 \beta_{15} + 19 \beta_{14} + 8 \beta_{13} - 7 \beta_{11} + 3 \beta_{10} + 8 \beta_{8} - \beta_{7} + \cdots + 32 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 33\beta_{14} + 8\beta_{13} - 8\beta_{12} - \beta_{10} - \beta_{9} - 63\beta_{6} \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 97 \beta_{14} - 51 \beta_{12} - 41 \beta_{11} - 2 \beta_{9} - 50 \beta_{8} + 9 \beta_{7} - 169 \beta_{6} + \cdots - 169 ) / 2 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( - 148 \beta_{15} - 50 \beta_{13} - 50 \beta_{12} - 245 \beta_{11} + 10 \beta_{10} - 10 \beta_{9} + \cdots - 323 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( -278\beta_{15} - 228\beta_{11} + 288\beta_{8} - 60\beta_{7} + 288\beta_{5} - 288\beta_{4} + 223\beta_{3} \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( - 809 \beta_{15} + 957 \beta_{14} + 288 \beta_{13} - 288 \beta_{12} - 70 \beta_{10} + \cdots + 599 \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 2728 \beta_{14} - 1673 \beta_{12} + 1245 \beta_{11} - 408 \beta_{9} + 1603 \beta_{8} - 358 \beta_{7} + \cdots - 4790 ) / 2 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( -1603\beta_{13} - 1603\beta_{12} + 428\beta_{10} - 428\beta_{9} + 5148\beta _1 - 9071 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 8354 \beta_{15} - 14647 \beta_{14} - 9210 \beta_{13} - 6751 \beta_{11} + 2489 \beta_{10} + \cdots - 25690 ) / 2 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 23857 \beta_{15} - 27721 \beta_{14} - 8782 \beta_{13} + 8782 \beta_{12} + 2459 \beta_{10} + \cdots + 16480 \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( 36503\beta_{11} + 47744\beta_{8} - 11241\beta_{7} - 2459\beta_{5} + 47744\beta_{4} + 31097\beta_{2} \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/405\mathbb{Z}\right)^\times\).

\(n\) \(82\) \(326\)
\(\chi(n)\) \(-\beta_{6}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
242.1
2.24352 + 0.601150i
1.60599 + 0.430324i
−0.347596 1.29724i
−0.0499037 0.186243i
−0.186243 0.0499037i
−1.29724 0.347596i
0.430324 + 1.60599i
0.601150 + 2.24352i
2.24352 0.601150i
1.60599 0.430324i
−0.347596 + 1.29724i
−0.0499037 + 0.186243i
−0.186243 + 0.0499037i
−1.29724 + 0.347596i
0.430324 1.60599i
0.601150 2.24352i
−1.64237 + 1.64237i 0 3.39477i 0.394116 + 2.20106i 0 −0.550102 0.550102i 2.29074 + 2.29074i 0 −4.26225 2.96768i
242.2 −1.17567 + 1.17567i 0 0.764383i 0.981675 2.00906i 0 1.27193 + 1.27193i −1.45267 1.45267i 0 1.20786 + 3.51610i
242.3 −0.949649 + 0.949649i 0 0.196335i −2.15519 + 0.595953i 0 −1.44851 1.44851i −2.08575 2.08575i 0 1.48073 2.61262i
242.4 −0.136339 + 0.136339i 0 1.96282i 1.79893 + 1.32810i 0 1.72668 + 1.72668i −0.540289 0.540289i 0 −0.426337 + 0.0641924i
242.5 0.136339 0.136339i 0 1.96282i −1.79893 1.32810i 0 1.72668 + 1.72668i 0.540289 + 0.540289i 0 −0.426337 + 0.0641924i
242.6 0.949649 0.949649i 0 0.196335i 2.15519 0.595953i 0 −1.44851 1.44851i 2.08575 + 2.08575i 0 1.48073 2.61262i
242.7 1.17567 1.17567i 0 0.764383i −0.981675 + 2.00906i 0 1.27193 + 1.27193i 1.45267 + 1.45267i 0 1.20786 + 3.51610i
242.8 1.64237 1.64237i 0 3.39477i −0.394116 2.20106i 0 −0.550102 0.550102i −2.29074 2.29074i 0 −4.26225 2.96768i
323.1 −1.64237 1.64237i 0 3.39477i 0.394116 2.20106i 0 −0.550102 + 0.550102i 2.29074 2.29074i 0 −4.26225 + 2.96768i
323.2 −1.17567 1.17567i 0 0.764383i 0.981675 + 2.00906i 0 1.27193 1.27193i −1.45267 + 1.45267i 0 1.20786 3.51610i
323.3 −0.949649 0.949649i 0 0.196335i −2.15519 0.595953i 0 −1.44851 + 1.44851i −2.08575 + 2.08575i 0 1.48073 + 2.61262i
323.4 −0.136339 0.136339i 0 1.96282i 1.79893 1.32810i 0 1.72668 1.72668i −0.540289 + 0.540289i 0 −0.426337 0.0641924i
323.5 0.136339 + 0.136339i 0 1.96282i −1.79893 + 1.32810i 0 1.72668 1.72668i 0.540289 0.540289i 0 −0.426337 0.0641924i
323.6 0.949649 + 0.949649i 0 0.196335i 2.15519 + 0.595953i 0 −1.44851 + 1.44851i 2.08575 2.08575i 0 1.48073 + 2.61262i
323.7 1.17567 + 1.17567i 0 0.764383i −0.981675 2.00906i 0 1.27193 1.27193i 1.45267 1.45267i 0 1.20786 3.51610i
323.8 1.64237 + 1.64237i 0 3.39477i −0.394116 + 2.20106i 0 −0.550102 + 0.550102i −2.29074 + 2.29074i 0 −4.26225 + 2.96768i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 242.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
5.c odd 4 1 inner
15.e even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 405.2.f.a 16
3.b odd 2 1 inner 405.2.f.a 16
5.c odd 4 1 inner 405.2.f.a 16
9.c even 3 1 45.2.l.a 16
9.c even 3 1 135.2.m.a 16
9.d odd 6 1 45.2.l.a 16
9.d odd 6 1 135.2.m.a 16
15.e even 4 1 inner 405.2.f.a 16
36.f odd 6 1 720.2.cu.c 16
36.h even 6 1 720.2.cu.c 16
45.h odd 6 1 225.2.p.b 16
45.h odd 6 1 675.2.q.a 16
45.j even 6 1 225.2.p.b 16
45.j even 6 1 675.2.q.a 16
45.k odd 12 1 45.2.l.a 16
45.k odd 12 1 135.2.m.a 16
45.k odd 12 1 225.2.p.b 16
45.k odd 12 1 675.2.q.a 16
45.l even 12 1 45.2.l.a 16
45.l even 12 1 135.2.m.a 16
45.l even 12 1 225.2.p.b 16
45.l even 12 1 675.2.q.a 16
180.v odd 12 1 720.2.cu.c 16
180.x even 12 1 720.2.cu.c 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
45.2.l.a 16 9.c even 3 1
45.2.l.a 16 9.d odd 6 1
45.2.l.a 16 45.k odd 12 1
45.2.l.a 16 45.l even 12 1
135.2.m.a 16 9.c even 3 1
135.2.m.a 16 9.d odd 6 1
135.2.m.a 16 45.k odd 12 1
135.2.m.a 16 45.l even 12 1
225.2.p.b 16 45.h odd 6 1
225.2.p.b 16 45.j even 6 1
225.2.p.b 16 45.k odd 12 1
225.2.p.b 16 45.l even 12 1
405.2.f.a 16 1.a even 1 1 trivial
405.2.f.a 16 3.b odd 2 1 inner
405.2.f.a 16 5.c odd 4 1 inner
405.2.f.a 16 15.e even 4 1 inner
675.2.q.a 16 45.h odd 6 1
675.2.q.a 16 45.j even 6 1
675.2.q.a 16 45.k odd 12 1
675.2.q.a 16 45.l even 12 1
720.2.cu.c 16 36.f odd 6 1
720.2.cu.c 16 36.h even 6 1
720.2.cu.c 16 180.v odd 12 1
720.2.cu.c 16 180.x even 12 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{16} + 40T_{2}^{12} + 342T_{2}^{8} + 724T_{2}^{4} + 1 \) acting on \(S_{2}^{\mathrm{new}}(405, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} + 40 T^{12} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( T^{16} + 4 T^{14} + \cdots + 390625 \) Copy content Toggle raw display
$7$ \( (T^{8} - 2 T^{7} + 2 T^{6} + \cdots + 49)^{2} \) Copy content Toggle raw display
$11$ \( (T^{8} + 20 T^{6} + 96 T^{4} + \cdots + 4)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} - 2 T^{7} + \cdots + 2116)^{2} \) Copy content Toggle raw display
$17$ \( T^{16} + 964 T^{12} + \cdots + 16 \) Copy content Toggle raw display
$19$ \( (T^{8} + 60 T^{6} + \cdots + 324)^{2} \) Copy content Toggle raw display
$23$ \( T^{16} + 2680 T^{12} + \cdots + 62742241 \) Copy content Toggle raw display
$29$ \( (T^{8} - 84 T^{6} + \cdots + 31329)^{2} \) Copy content Toggle raw display
$31$ \( (T^{4} - 2 T^{3} - 42 T^{2} + \cdots - 26)^{4} \) Copy content Toggle raw display
$37$ \( (T^{8} - 2 T^{7} + 2 T^{6} + \cdots + 4)^{2} \) Copy content Toggle raw display
$41$ \( (T^{8} + 92 T^{6} + \cdots + 32761)^{2} \) Copy content Toggle raw display
$43$ \( (T^{8} - 2 T^{7} + \cdots + 3364)^{2} \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 33243864241 \) Copy content Toggle raw display
$53$ \( T^{16} + \cdots + 409600000000 \) Copy content Toggle raw display
$59$ \( (T^{8} - 144 T^{6} + \cdots + 24336)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 4 T^{3} + \cdots - 107)^{4} \) Copy content Toggle raw display
$67$ \( (T^{8} + 4 T^{7} + \cdots + 734449)^{2} \) Copy content Toggle raw display
$71$ \( (T^{8} + 116 T^{6} + \cdots + 128164)^{2} \) Copy content Toggle raw display
$73$ \( (T^{8} + 4 T^{7} + \cdots + 270400)^{2} \) Copy content Toggle raw display
$79$ \( (T^{8} + 372 T^{6} + \cdots + 41679936)^{2} \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 13841287201 \) Copy content Toggle raw display
$89$ \( (T^{8} - 300 T^{6} + \cdots + 3969)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} + 28 T^{7} + \cdots + 78400)^{2} \) Copy content Toggle raw display
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