Properties

Label 630.2.k.c
Level $630$
Weight $2$
Character orbit 630.k
Analytic conductor $5.031$
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] = [630,2,Mod(361,630)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(630, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 0, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("630.361");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 630 = 2 \cdot 3^{2} \cdot 5 \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 630.k (of order \(3\), 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: \(5.03057532734\)
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 210)
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.

\(f(q)\) \(=\) \( q - \zeta_{6} q^{2} + (\zeta_{6} - 1) q^{4} - \zeta_{6} q^{5} + (2 \zeta_{6} + 1) q^{7} + q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{6} q^{2} + (\zeta_{6} - 1) q^{4} - \zeta_{6} q^{5} + (2 \zeta_{6} + 1) q^{7} + q^{8} + (\zeta_{6} - 1) q^{10} + (\zeta_{6} - 1) q^{11} + q^{13} + ( - 3 \zeta_{6} + 2) q^{14} - \zeta_{6} q^{16} + 3 \zeta_{6} q^{19} + q^{20} + q^{22} + 7 \zeta_{6} q^{23} + (\zeta_{6} - 1) q^{25} - \zeta_{6} q^{26} + (\zeta_{6} - 3) q^{28} + 8 q^{29} + ( - 2 \zeta_{6} + 2) q^{31} + (\zeta_{6} - 1) q^{32} + ( - 3 \zeta_{6} + 2) q^{35} - 11 \zeta_{6} q^{37} + ( - 3 \zeta_{6} + 3) q^{38} - \zeta_{6} q^{40} + 11 q^{41} + 8 q^{43} - \zeta_{6} q^{44} + ( - 7 \zeta_{6} + 7) q^{46} - 5 \zeta_{6} q^{47} + (8 \zeta_{6} - 3) q^{49} + q^{50} + (\zeta_{6} - 1) q^{52} + (11 \zeta_{6} - 11) q^{53} + q^{55} + (2 \zeta_{6} + 1) q^{56} - 8 \zeta_{6} q^{58} + ( - 4 \zeta_{6} + 4) q^{59} - 2 q^{62} + q^{64} - \zeta_{6} q^{65} + (\zeta_{6} - 3) q^{70} + 6 q^{71} + ( - 6 \zeta_{6} + 6) q^{73} + (11 \zeta_{6} - 11) q^{74} - 3 q^{76} + (\zeta_{6} - 3) q^{77} + 8 \zeta_{6} q^{79} + (\zeta_{6} - 1) q^{80} - 11 \zeta_{6} q^{82} - 8 q^{83} - 8 \zeta_{6} q^{86} + (\zeta_{6} - 1) q^{88} - 10 \zeta_{6} q^{89} + (2 \zeta_{6} + 1) q^{91} - 7 q^{92} + (5 \zeta_{6} - 5) q^{94} + ( - 3 \zeta_{6} + 3) q^{95} - 16 q^{97} + ( - 5 \zeta_{6} + 8) q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - q^{2} - q^{4} - q^{5} + 4 q^{7} + 2 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - q^{2} - q^{4} - q^{5} + 4 q^{7} + 2 q^{8} - q^{10} - q^{11} + 2 q^{13} + q^{14} - q^{16} + 3 q^{19} + 2 q^{20} + 2 q^{22} + 7 q^{23} - q^{25} - q^{26} - 5 q^{28} + 16 q^{29} + 2 q^{31} - q^{32} + q^{35} - 11 q^{37} + 3 q^{38} - q^{40} + 22 q^{41} + 16 q^{43} - q^{44} + 7 q^{46} - 5 q^{47} + 2 q^{49} + 2 q^{50} - q^{52} - 11 q^{53} + 2 q^{55} + 4 q^{56} - 8 q^{58} + 4 q^{59} - 4 q^{62} + 2 q^{64} - q^{65} - 5 q^{70} + 12 q^{71} + 6 q^{73} - 11 q^{74} - 6 q^{76} - 5 q^{77} + 8 q^{79} - q^{80} - 11 q^{82} - 16 q^{83} - 8 q^{86} - q^{88} - 10 q^{89} + 4 q^{91} - 14 q^{92} - 5 q^{94} + 3 q^{95} - 32 q^{97} + 11 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/630\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(281\) \(451\)
\(\chi(n)\) \(1\) \(1\) \(-\zeta_{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
361.1
0.500000 + 0.866025i
0.500000 0.866025i
−0.500000 0.866025i 0 −0.500000 + 0.866025i −0.500000 0.866025i 0 2.00000 + 1.73205i 1.00000 0 −0.500000 + 0.866025i
541.1 −0.500000 + 0.866025i 0 −0.500000 0.866025i −0.500000 + 0.866025i 0 2.00000 1.73205i 1.00000 0 −0.500000 0.866025i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

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

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 630.2.k.c 2
3.b odd 2 1 210.2.i.d 2
7.c even 3 1 inner 630.2.k.c 2
7.c even 3 1 4410.2.a.bj 1
7.d odd 6 1 4410.2.a.ba 1
12.b even 2 1 1680.2.bg.g 2
15.d odd 2 1 1050.2.i.b 2
15.e even 4 2 1050.2.o.i 4
21.c even 2 1 1470.2.i.m 2
21.g even 6 1 1470.2.a.h 1
21.g even 6 1 1470.2.i.m 2
21.h odd 6 1 210.2.i.d 2
21.h odd 6 1 1470.2.a.a 1
84.n even 6 1 1680.2.bg.g 2
105.o odd 6 1 1050.2.i.b 2
105.o odd 6 1 7350.2.a.cp 1
105.p even 6 1 7350.2.a.bu 1
105.x even 12 2 1050.2.o.i 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
210.2.i.d 2 3.b odd 2 1
210.2.i.d 2 21.h odd 6 1
630.2.k.c 2 1.a even 1 1 trivial
630.2.k.c 2 7.c even 3 1 inner
1050.2.i.b 2 15.d odd 2 1
1050.2.i.b 2 105.o odd 6 1
1050.2.o.i 4 15.e even 4 2
1050.2.o.i 4 105.x even 12 2
1470.2.a.a 1 21.h odd 6 1
1470.2.a.h 1 21.g even 6 1
1470.2.i.m 2 21.c even 2 1
1470.2.i.m 2 21.g even 6 1
1680.2.bg.g 2 12.b even 2 1
1680.2.bg.g 2 84.n even 6 1
4410.2.a.ba 1 7.d odd 6 1
4410.2.a.bj 1 7.c even 3 1
7350.2.a.bu 1 105.p even 6 1
7350.2.a.cp 1 105.o odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(630, [\chi])\):

\( T_{11}^{2} + T_{11} + 1 \) Copy content Toggle raw display
\( T_{13} - 1 \) Copy content Toggle raw display
\( T_{17} \) 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
$7$ \( T^{2} - 4T + 7 \) Copy content Toggle raw display
$11$ \( T^{2} + T + 1 \) Copy content Toggle raw display
$13$ \( (T - 1)^{2} \) Copy content Toggle raw display
$17$ \( T^{2} \) Copy content Toggle raw display
$19$ \( T^{2} - 3T + 9 \) Copy content Toggle raw display
$23$ \( T^{2} - 7T + 49 \) Copy content Toggle raw display
$29$ \( (T - 8)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} - 2T + 4 \) Copy content Toggle raw display
$37$ \( T^{2} + 11T + 121 \) Copy content Toggle raw display
$41$ \( (T - 11)^{2} \) Copy content Toggle raw display
$43$ \( (T - 8)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} + 5T + 25 \) Copy content Toggle raw display
$53$ \( T^{2} + 11T + 121 \) Copy content Toggle raw display
$59$ \( T^{2} - 4T + 16 \) Copy content Toggle raw display
$61$ \( T^{2} \) Copy content Toggle raw display
$67$ \( T^{2} \) Copy content Toggle raw display
$71$ \( (T - 6)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} - 6T + 36 \) Copy content Toggle raw display
$79$ \( T^{2} - 8T + 64 \) Copy content Toggle raw display
$83$ \( (T + 8)^{2} \) Copy content Toggle raw display
$89$ \( T^{2} + 10T + 100 \) Copy content Toggle raw display
$97$ \( (T + 16)^{2} \) Copy content Toggle raw display
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