Properties

Label 810.2.e.a
Level $810$
Weight $2$
Character orbit 810.e
Analytic conductor $6.468$
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] = [810,2,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, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("810.271");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 810 = 2 \cdot 3^{4} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
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: \(6.46788256372\)
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: \(\Z[a_1, a_2]\)
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.

\(f(q)\) \(=\) \( q + (\zeta_{6} - 1) q^{2} - \zeta_{6} q^{4} - \zeta_{6} q^{5} + (2 \zeta_{6} - 2) q^{7} + q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{6} - 1) q^{2} - \zeta_{6} q^{4} - \zeta_{6} q^{5} + (2 \zeta_{6} - 2) q^{7} + q^{8} + q^{10} + ( - 3 \zeta_{6} + 3) q^{11} + \zeta_{6} q^{13} - 2 \zeta_{6} q^{14} + (\zeta_{6} - 1) q^{16} - 3 q^{17} + 8 q^{19} + (\zeta_{6} - 1) q^{20} + 3 \zeta_{6} q^{22} - 3 \zeta_{6} q^{23} + (\zeta_{6} - 1) q^{25} - q^{26} + 2 q^{28} + ( - 9 \zeta_{6} + 9) q^{29} + 7 \zeta_{6} q^{31} - \zeta_{6} q^{32} + ( - 3 \zeta_{6} + 3) q^{34} + 2 q^{35} + 2 q^{37} + (8 \zeta_{6} - 8) q^{38} - \zeta_{6} q^{40} + 12 \zeta_{6} q^{41} + ( - 7 \zeta_{6} + 7) q^{43} - 3 q^{44} + 3 q^{46} + ( - 3 \zeta_{6} + 3) q^{47} + 3 \zeta_{6} q^{49} - \zeta_{6} q^{50} + ( - \zeta_{6} + 1) q^{52} + 12 q^{53} - 3 q^{55} + (2 \zeta_{6} - 2) q^{56} + 9 \zeta_{6} q^{58} - 12 \zeta_{6} q^{59} + ( - 10 \zeta_{6} + 10) q^{61} - 7 q^{62} + q^{64} + ( - \zeta_{6} + 1) q^{65} + 4 \zeta_{6} q^{67} + 3 \zeta_{6} q^{68} + (2 \zeta_{6} - 2) q^{70} + 2 q^{73} + (2 \zeta_{6} - 2) q^{74} - 8 \zeta_{6} q^{76} + 6 \zeta_{6} q^{77} + ( - \zeta_{6} + 1) q^{79} + q^{80} - 12 q^{82} + (18 \zeta_{6} - 18) q^{83} + 3 \zeta_{6} q^{85} + 7 \zeta_{6} q^{86} + ( - 3 \zeta_{6} + 3) q^{88} - 2 q^{91} + (3 \zeta_{6} - 3) q^{92} + 3 \zeta_{6} q^{94} - 8 \zeta_{6} q^{95} + (14 \zeta_{6} - 14) q^{97} - 3 q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - q^{2} - q^{4} - q^{5} - 2 q^{7} + 2 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - q^{2} - q^{4} - q^{5} - 2 q^{7} + 2 q^{8} + 2 q^{10} + 3 q^{11} + q^{13} - 2 q^{14} - q^{16} - 6 q^{17} + 16 q^{19} - q^{20} + 3 q^{22} - 3 q^{23} - q^{25} - 2 q^{26} + 4 q^{28} + 9 q^{29} + 7 q^{31} - q^{32} + 3 q^{34} + 4 q^{35} + 4 q^{37} - 8 q^{38} - q^{40} + 12 q^{41} + 7 q^{43} - 6 q^{44} + 6 q^{46} + 3 q^{47} + 3 q^{49} - q^{50} + q^{52} + 24 q^{53} - 6 q^{55} - 2 q^{56} + 9 q^{58} - 12 q^{59} + 10 q^{61} - 14 q^{62} + 2 q^{64} + q^{65} + 4 q^{67} + 3 q^{68} - 2 q^{70} + 4 q^{73} - 2 q^{74} - 8 q^{76} + 6 q^{77} + q^{79} + 2 q^{80} - 24 q^{82} - 18 q^{83} + 3 q^{85} + 7 q^{86} + 3 q^{88} - 4 q^{91} - 3 q^{92} + 3 q^{94} - 8 q^{95} - 14 q^{97} - 6 q^{98}+O(q^{100}) \) 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
−0.500000 0.866025i 0 −0.500000 + 0.866025i −0.500000 + 0.866025i 0 −1.00000 1.73205i 1.00000 0 1.00000
541.1 −0.500000 + 0.866025i 0 −0.500000 0.866025i −0.500000 0.866025i 0 −1.00000 + 1.73205i 1.00000 0 1.00000
\(n\): 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 810.2.e.a 2
3.b odd 2 1 810.2.e.k 2
9.c even 3 1 270.2.a.d yes 1
9.c even 3 1 inner 810.2.e.a 2
9.d odd 6 1 270.2.a.a 1
9.d odd 6 1 810.2.e.k 2
36.f odd 6 1 2160.2.a.p 1
36.h even 6 1 2160.2.a.a 1
45.h odd 6 1 1350.2.a.p 1
45.j even 6 1 1350.2.a.c 1
45.k odd 12 2 1350.2.c.a 2
45.l even 12 2 1350.2.c.l 2
72.j odd 6 1 8640.2.a.by 1
72.l even 6 1 8640.2.a.bo 1
72.n even 6 1 8640.2.a.z 1
72.p odd 6 1 8640.2.a.f 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
270.2.a.a 1 9.d odd 6 1
270.2.a.d yes 1 9.c even 3 1
810.2.e.a 2 1.a even 1 1 trivial
810.2.e.a 2 9.c even 3 1 inner
810.2.e.k 2 3.b odd 2 1
810.2.e.k 2 9.d odd 6 1
1350.2.a.c 1 45.j even 6 1
1350.2.a.p 1 45.h odd 6 1
1350.2.c.a 2 45.k odd 12 2
1350.2.c.l 2 45.l even 12 2
2160.2.a.a 1 36.h even 6 1
2160.2.a.p 1 36.f odd 6 1
8640.2.a.f 1 72.p odd 6 1
8640.2.a.z 1 72.n even 6 1
8640.2.a.bo 1 72.l even 6 1
8640.2.a.by 1 72.j odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(810, [\chi])\):

\( T_{7}^{2} + 2T_{7} + 4 \) Copy content Toggle raw display
\( T_{11}^{2} - 3T_{11} + 9 \) Copy content Toggle raw display
\( T_{13}^{2} - T_{13} + 1 \) Copy content Toggle raw display
\( T_{17} + 3 \) Copy content Toggle raw display
\( T_{23}^{2} + 3T_{23} + 9 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + T + 1 \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} + T + 1 \) Copy content Toggle raw display
$7$ \( T^{2} + 2T + 4 \) Copy content Toggle raw display
$11$ \( T^{2} - 3T + 9 \) Copy content Toggle raw display
$13$ \( T^{2} - T + 1 \) Copy content Toggle raw display
$17$ \( (T + 3)^{2} \) Copy content Toggle raw display
$19$ \( (T - 8)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 3T + 9 \) Copy content Toggle raw display
$29$ \( T^{2} - 9T + 81 \) Copy content Toggle raw display
$31$ \( T^{2} - 7T + 49 \) Copy content Toggle raw display
$37$ \( (T - 2)^{2} \) Copy content Toggle raw display
$41$ \( T^{2} - 12T + 144 \) Copy content Toggle raw display
$43$ \( T^{2} - 7T + 49 \) Copy content Toggle raw display
$47$ \( T^{2} - 3T + 9 \) Copy content Toggle raw display
$53$ \( (T - 12)^{2} \) Copy content Toggle raw display
$59$ \( T^{2} + 12T + 144 \) Copy content Toggle raw display
$61$ \( T^{2} - 10T + 100 \) Copy content Toggle raw display
$67$ \( T^{2} - 4T + 16 \) Copy content Toggle raw display
$71$ \( T^{2} \) Copy content Toggle raw display
$73$ \( (T - 2)^{2} \) Copy content Toggle raw display
$79$ \( T^{2} - T + 1 \) Copy content Toggle raw display
$83$ \( T^{2} + 18T + 324 \) Copy content Toggle raw display
$89$ \( T^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 14T + 196 \) Copy content Toggle raw display
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