Properties

Label 784.3.s.b
Level $784$
Weight $3$
Character orbit 784.s
Analytic conductor $21.362$
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] = [784,3,Mod(129,784)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(784, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 0, 1]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("784.129");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 784 = 2^{4} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 784.s (of order \(6\), 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: \(21.3624527258\)
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: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 28)
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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.

\(f(q)\) \(=\) \( q + (\zeta_{6} + 1) q^{3} + (\zeta_{6} - 2) q^{5} - 6 \zeta_{6} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{6} + 1) q^{3} + (\zeta_{6} - 2) q^{5} - 6 \zeta_{6} q^{9} + ( - 15 \zeta_{6} + 15) q^{11} + (16 \zeta_{6} - 8) q^{13} - 3 q^{15} + ( - 17 \zeta_{6} - 17) q^{17} + ( - 9 \zeta_{6} + 18) q^{19} - 9 \zeta_{6} q^{23} + (22 \zeta_{6} - 22) q^{25} + ( - 30 \zeta_{6} + 15) q^{27} - 6 q^{29} + ( - 7 \zeta_{6} - 7) q^{31} + ( - 15 \zeta_{6} + 30) q^{33} - 31 \zeta_{6} q^{37} + (24 \zeta_{6} - 24) q^{39} + ( - 64 \zeta_{6} + 32) q^{41} - 10 q^{43} + (6 \zeta_{6} + 6) q^{45} + ( - 25 \zeta_{6} + 50) q^{47} - 51 \zeta_{6} q^{51} + ( - 57 \zeta_{6} + 57) q^{53} + (30 \zeta_{6} - 15) q^{55} + 27 q^{57} + ( - 47 \zeta_{6} - 47) q^{59} + ( - 47 \zeta_{6} + 94) q^{61} - 24 \zeta_{6} q^{65} + (49 \zeta_{6} - 49) q^{67} + ( - 18 \zeta_{6} + 9) q^{69} + 126 q^{71} + (15 \zeta_{6} + 15) q^{73} + (22 \zeta_{6} - 44) q^{75} - 73 \zeta_{6} q^{79} + (9 \zeta_{6} - 9) q^{81} + (16 \zeta_{6} - 8) q^{83} + 51 q^{85} + ( - 6 \zeta_{6} - 6) q^{87} + (33 \zeta_{6} - 66) q^{89} - 21 \zeta_{6} q^{93} + (27 \zeta_{6} - 27) q^{95} + (32 \zeta_{6} - 16) q^{97} - 90 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 3 q^{3} - 3 q^{5} - 6 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 3 q^{3} - 3 q^{5} - 6 q^{9} + 15 q^{11} - 6 q^{15} - 51 q^{17} + 27 q^{19} - 9 q^{23} - 22 q^{25} - 12 q^{29} - 21 q^{31} + 45 q^{33} - 31 q^{37} - 24 q^{39} - 20 q^{43} + 18 q^{45} + 75 q^{47} - 51 q^{51} + 57 q^{53} + 54 q^{57} - 141 q^{59} + 141 q^{61} - 24 q^{65} - 49 q^{67} + 252 q^{71} + 45 q^{73} - 66 q^{75} - 73 q^{79} - 9 q^{81} + 102 q^{85} - 18 q^{87} - 99 q^{89} - 21 q^{93} - 27 q^{95} - 180 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/784\mathbb{Z}\right)^\times\).

\(n\) \(197\) \(687\) \(689\)
\(\chi(n)\) \(1\) \(1\) \(\zeta_{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
129.1
0.500000 + 0.866025i
0.500000 0.866025i
0 1.50000 + 0.866025i 0 −1.50000 + 0.866025i 0 0 0 −3.00000 5.19615i 0
705.1 0 1.50000 0.866025i 0 −1.50000 0.866025i 0 0 0 −3.00000 + 5.19615i 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.d odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 784.3.s.b 2
4.b odd 2 1 196.3.h.a 2
7.b odd 2 1 112.3.s.a 2
7.c even 3 1 112.3.s.a 2
7.c even 3 1 784.3.c.a 2
7.d odd 6 1 784.3.c.a 2
7.d odd 6 1 inner 784.3.s.b 2
12.b even 2 1 1764.3.z.f 2
21.c even 2 1 1008.3.cg.c 2
21.h odd 6 1 1008.3.cg.c 2
28.d even 2 1 28.3.h.a 2
28.f even 6 1 196.3.b.a 2
28.f even 6 1 196.3.h.a 2
28.g odd 6 1 28.3.h.a 2
28.g odd 6 1 196.3.b.a 2
56.e even 2 1 448.3.s.a 2
56.h odd 2 1 448.3.s.b 2
56.k odd 6 1 448.3.s.a 2
56.p even 6 1 448.3.s.b 2
84.h odd 2 1 252.3.z.a 2
84.j odd 6 1 1764.3.d.a 2
84.j odd 6 1 1764.3.z.f 2
84.n even 6 1 252.3.z.a 2
84.n even 6 1 1764.3.d.a 2
140.c even 2 1 700.3.s.a 2
140.j odd 4 2 700.3.o.a 4
140.p odd 6 1 700.3.s.a 2
140.w even 12 2 700.3.o.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
28.3.h.a 2 28.d even 2 1
28.3.h.a 2 28.g odd 6 1
112.3.s.a 2 7.b odd 2 1
112.3.s.a 2 7.c even 3 1
196.3.b.a 2 28.f even 6 1
196.3.b.a 2 28.g odd 6 1
196.3.h.a 2 4.b odd 2 1
196.3.h.a 2 28.f even 6 1
252.3.z.a 2 84.h odd 2 1
252.3.z.a 2 84.n even 6 1
448.3.s.a 2 56.e even 2 1
448.3.s.a 2 56.k odd 6 1
448.3.s.b 2 56.h odd 2 1
448.3.s.b 2 56.p even 6 1
700.3.o.a 4 140.j odd 4 2
700.3.o.a 4 140.w even 12 2
700.3.s.a 2 140.c even 2 1
700.3.s.a 2 140.p odd 6 1
784.3.c.a 2 7.c even 3 1
784.3.c.a 2 7.d odd 6 1
784.3.s.b 2 1.a even 1 1 trivial
784.3.s.b 2 7.d odd 6 1 inner
1008.3.cg.c 2 21.c even 2 1
1008.3.cg.c 2 21.h odd 6 1
1764.3.d.a 2 84.j odd 6 1
1764.3.d.a 2 84.n even 6 1
1764.3.z.f 2 12.b even 2 1
1764.3.z.f 2 84.j odd 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{2} - 3T_{3} + 3 \) acting on \(S_{3}^{\mathrm{new}}(784, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 3T + 3 \) Copy content Toggle raw display
$5$ \( T^{2} + 3T + 3 \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} - 15T + 225 \) Copy content Toggle raw display
$13$ \( T^{2} + 192 \) Copy content Toggle raw display
$17$ \( T^{2} + 51T + 867 \) Copy content Toggle raw display
$19$ \( T^{2} - 27T + 243 \) Copy content Toggle raw display
$23$ \( T^{2} + 9T + 81 \) Copy content Toggle raw display
$29$ \( (T + 6)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} + 21T + 147 \) Copy content Toggle raw display
$37$ \( T^{2} + 31T + 961 \) Copy content Toggle raw display
$41$ \( T^{2} + 3072 \) Copy content Toggle raw display
$43$ \( (T + 10)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} - 75T + 1875 \) Copy content Toggle raw display
$53$ \( T^{2} - 57T + 3249 \) Copy content Toggle raw display
$59$ \( T^{2} + 141T + 6627 \) Copy content Toggle raw display
$61$ \( T^{2} - 141T + 6627 \) Copy content Toggle raw display
$67$ \( T^{2} + 49T + 2401 \) Copy content Toggle raw display
$71$ \( (T - 126)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} - 45T + 675 \) Copy content Toggle raw display
$79$ \( T^{2} + 73T + 5329 \) Copy content Toggle raw display
$83$ \( T^{2} + 192 \) Copy content Toggle raw display
$89$ \( T^{2} + 99T + 3267 \) Copy content Toggle raw display
$97$ \( T^{2} + 768 \) Copy content Toggle raw display
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