Properties

Label 810.4.e.j
Level $810$
Weight $4$
Character orbit 810.e
Analytic conductor $47.792$
Analytic rank $0$
Dimension $2$
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] = [810,4,Mod(271,810)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(810, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([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("810.271");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 810 = 2 \cdot 3^{4} \cdot 5 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 810.e (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: \(47.7915471046\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-3}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 270)
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 primitive root of unity \(\zeta_{6}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (2 \zeta_{6} - 2) q^{2} - 4 \zeta_{6} q^{4} + 5 \zeta_{6} q^{5} + ( - 13 \zeta_{6} + 13) q^{7} + 8 q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q + (2 \zeta_{6} - 2) q^{2} - 4 \zeta_{6} q^{4} + 5 \zeta_{6} q^{5} + ( - 13 \zeta_{6} + 13) q^{7} + 8 q^{8} - 10 q^{10} + ( - 30 \zeta_{6} + 30) q^{11} + 61 \zeta_{6} q^{13} + 26 \zeta_{6} q^{14} + (16 \zeta_{6} - 16) q^{16} + 12 q^{17} - 49 q^{19} + ( - 20 \zeta_{6} + 20) q^{20} + 60 \zeta_{6} q^{22} - 18 \zeta_{6} q^{23} + (25 \zeta_{6} - 25) q^{25} - 122 q^{26} - 52 q^{28} + ( - 186 \zeta_{6} + 186) q^{29} + 160 \zeta_{6} q^{31} - 32 \zeta_{6} q^{32} + (24 \zeta_{6} - 24) q^{34} + 65 q^{35} - 91 q^{37} + ( - 98 \zeta_{6} + 98) q^{38} + 40 \zeta_{6} q^{40} - 378 \zeta_{6} q^{41} + ( - 268 \zeta_{6} + 268) q^{43} - 120 q^{44} + 36 q^{46} + (144 \zeta_{6} - 144) q^{47} + 174 \zeta_{6} q^{49} - 50 \zeta_{6} q^{50} + ( - 244 \zeta_{6} + 244) q^{52} + 570 q^{53} + 150 q^{55} + ( - 104 \zeta_{6} + 104) q^{56} + 372 \zeta_{6} q^{58} - 204 \zeta_{6} q^{59} + ( - 877 \zeta_{6} + 877) q^{61} - 320 q^{62} + 64 q^{64} + (305 \zeta_{6} - 305) q^{65} + 187 \zeta_{6} q^{67} - 48 \zeta_{6} q^{68} + (130 \zeta_{6} - 130) q^{70} - 606 q^{71} + 431 q^{73} + ( - 182 \zeta_{6} + 182) q^{74} + 196 \zeta_{6} q^{76} - 390 \zeta_{6} q^{77} + (1151 \zeta_{6} - 1151) q^{79} - 80 q^{80} + 756 q^{82} + (102 \zeta_{6} - 102) q^{83} + 60 \zeta_{6} q^{85} + 536 \zeta_{6} q^{86} + ( - 240 \zeta_{6} + 240) q^{88} + 984 q^{89} + 793 q^{91} + (72 \zeta_{6} - 72) q^{92} - 288 \zeta_{6} q^{94} - 245 \zeta_{6} q^{95} + ( - 265 \zeta_{6} + 265) q^{97} - 348 q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{2} - 4 q^{4} + 5 q^{5} + 13 q^{7} + 16 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{2} - 4 q^{4} + 5 q^{5} + 13 q^{7} + 16 q^{8} - 20 q^{10} + 30 q^{11} + 61 q^{13} + 26 q^{14} - 16 q^{16} + 24 q^{17} - 98 q^{19} + 20 q^{20} + 60 q^{22} - 18 q^{23} - 25 q^{25} - 244 q^{26} - 104 q^{28} + 186 q^{29} + 160 q^{31} - 32 q^{32} - 24 q^{34} + 130 q^{35} - 182 q^{37} + 98 q^{38} + 40 q^{40} - 378 q^{41} + 268 q^{43} - 240 q^{44} + 72 q^{46} - 144 q^{47} + 174 q^{49} - 50 q^{50} + 244 q^{52} + 1140 q^{53} + 300 q^{55} + 104 q^{56} + 372 q^{58} - 204 q^{59} + 877 q^{61} - 640 q^{62} + 128 q^{64} - 305 q^{65} + 187 q^{67} - 48 q^{68} - 130 q^{70} - 1212 q^{71} + 862 q^{73} + 182 q^{74} + 196 q^{76} - 390 q^{77} - 1151 q^{79} - 160 q^{80} + 1512 q^{82} - 102 q^{83} + 60 q^{85} + 536 q^{86} + 240 q^{88} + 1968 q^{89} + 1586 q^{91} - 72 q^{92} - 288 q^{94} - 245 q^{95} + 265 q^{97} - 696 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/810\mathbb{Z}\right)^\times\).

\(n\) \(487\) \(731\)
\(\chi(n)\) \(1\) \(-\zeta_{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
271.1
0.500000 0.866025i
0.500000 + 0.866025i
−1.00000 1.73205i 0 −2.00000 + 3.46410i 2.50000 4.33013i 0 6.50000 + 11.2583i 8.00000 0 −10.0000
541.1 −1.00000 + 1.73205i 0 −2.00000 3.46410i 2.50000 + 4.33013i 0 6.50000 11.2583i 8.00000 0 −10.0000
\(n\): e.g. 2-40 or 990-1000
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 810.4.e.j 2
3.b odd 2 1 810.4.e.r 2
9.c even 3 1 270.4.a.h yes 1
9.c even 3 1 inner 810.4.e.j 2
9.d odd 6 1 270.4.a.d 1
9.d odd 6 1 810.4.e.r 2
36.f odd 6 1 2160.4.a.g 1
36.h even 6 1 2160.4.a.q 1
45.h odd 6 1 1350.4.a.w 1
45.j even 6 1 1350.4.a.i 1
45.k odd 12 2 1350.4.c.f 2
45.l even 12 2 1350.4.c.o 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
270.4.a.d 1 9.d odd 6 1
270.4.a.h yes 1 9.c even 3 1
810.4.e.j 2 1.a even 1 1 trivial
810.4.e.j 2 9.c even 3 1 inner
810.4.e.r 2 3.b odd 2 1
810.4.e.r 2 9.d odd 6 1
1350.4.a.i 1 45.j even 6 1
1350.4.a.w 1 45.h odd 6 1
1350.4.c.f 2 45.k odd 12 2
1350.4.c.o 2 45.l even 12 2
2160.4.a.g 1 36.f odd 6 1
2160.4.a.q 1 36.h even 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(810, [\chi])\):

\( T_{7}^{2} - 13T_{7} + 169 \) Copy content Toggle raw display
\( T_{11}^{2} - 30T_{11} + 900 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + 2T + 4 \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} - 5T + 25 \) Copy content Toggle raw display
$7$ \( T^{2} - 13T + 169 \) Copy content Toggle raw display
$11$ \( T^{2} - 30T + 900 \) Copy content Toggle raw display
$13$ \( T^{2} - 61T + 3721 \) Copy content Toggle raw display
$17$ \( (T - 12)^{2} \) Copy content Toggle raw display
$19$ \( (T + 49)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 18T + 324 \) Copy content Toggle raw display
$29$ \( T^{2} - 186T + 34596 \) Copy content Toggle raw display
$31$ \( T^{2} - 160T + 25600 \) Copy content Toggle raw display
$37$ \( (T + 91)^{2} \) Copy content Toggle raw display
$41$ \( T^{2} + 378T + 142884 \) Copy content Toggle raw display
$43$ \( T^{2} - 268T + 71824 \) Copy content Toggle raw display
$47$ \( T^{2} + 144T + 20736 \) Copy content Toggle raw display
$53$ \( (T - 570)^{2} \) Copy content Toggle raw display
$59$ \( T^{2} + 204T + 41616 \) Copy content Toggle raw display
$61$ \( T^{2} - 877T + 769129 \) Copy content Toggle raw display
$67$ \( T^{2} - 187T + 34969 \) Copy content Toggle raw display
$71$ \( (T + 606)^{2} \) Copy content Toggle raw display
$73$ \( (T - 431)^{2} \) Copy content Toggle raw display
$79$ \( T^{2} + 1151 T + 1324801 \) Copy content Toggle raw display
$83$ \( T^{2} + 102T + 10404 \) Copy content Toggle raw display
$89$ \( (T - 984)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} - 265T + 70225 \) Copy content Toggle raw display
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