Properties

Label 490.3.f.b
Level $490$
Weight $3$
Character orbit 490.f
Analytic conductor $13.352$
Analytic rank $0$
Dimension $2$
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [490,3,Mod(197,490)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(490, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([1, 0]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("490.197");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 490 = 2 \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 490.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: \(13.3515329537\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 10)
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 \(i = \sqrt{-1}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - i - 1) q^{2} + ( - 2 i + 2) q^{3} + 2 i q^{4} + 5 i q^{5} - 4 q^{6} + ( - 2 i + 2) q^{8} + i q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - i - 1) q^{2} + ( - 2 i + 2) q^{3} + 2 i q^{4} + 5 i q^{5} - 4 q^{6} + ( - 2 i + 2) q^{8} + i q^{9} + ( - 5 i + 5) q^{10} - 8 q^{11} + (4 i + 4) q^{12} + (3 i - 3) q^{13} + (10 i + 10) q^{15} - 4 q^{16} + ( - 7 i - 7) q^{17} + ( - i + 1) q^{18} + 20 i q^{19} - 10 q^{20} + (8 i + 8) q^{22} + (2 i - 2) q^{23} - 8 i q^{24} - 25 q^{25} + 6 q^{26} + (20 i + 20) q^{27} + 40 i q^{29} - 20 i q^{30} - 52 q^{31} + (4 i + 4) q^{32} + (16 i - 16) q^{33} + 14 i q^{34} - 2 q^{36} + ( - 3 i - 3) q^{37} + ( - 20 i + 20) q^{38} + 12 i q^{39} + (10 i + 10) q^{40} + 8 q^{41} + (42 i - 42) q^{43} - 16 i q^{44} - 5 q^{45} + 4 q^{46} + (18 i + 18) q^{47} + (8 i - 8) q^{48} + (25 i + 25) q^{50} - 28 q^{51} + ( - 6 i - 6) q^{52} + ( - 53 i + 53) q^{53} - 40 i q^{54} - 40 i q^{55} + (40 i + 40) q^{57} + ( - 40 i + 40) q^{58} + 20 i q^{59} + (20 i - 20) q^{60} + 48 q^{61} + (52 i + 52) q^{62} - 8 i q^{64} + ( - 15 i - 15) q^{65} + 32 q^{66} + (62 i + 62) q^{67} + ( - 14 i + 14) q^{68} + 8 i q^{69} - 28 q^{71} + (2 i + 2) q^{72} + ( - 47 i + 47) q^{73} + 6 i q^{74} + (50 i - 50) q^{75} - 40 q^{76} + ( - 12 i + 12) q^{78} - 20 i q^{80} + 71 q^{81} + ( - 8 i - 8) q^{82} + (18 i - 18) q^{83} + ( - 35 i + 35) q^{85} + 84 q^{86} + (80 i + 80) q^{87} + (16 i - 16) q^{88} - 80 i q^{89} + (5 i + 5) q^{90} + ( - 4 i - 4) q^{92} + (104 i - 104) q^{93} - 36 i q^{94} - 100 q^{95} + 16 q^{96} + (63 i + 63) q^{97} - 8 i q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{2} + 4 q^{3} - 8 q^{6} + 4 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{2} + 4 q^{3} - 8 q^{6} + 4 q^{8} + 10 q^{10} - 16 q^{11} + 8 q^{12} - 6 q^{13} + 20 q^{15} - 8 q^{16} - 14 q^{17} + 2 q^{18} - 20 q^{20} + 16 q^{22} - 4 q^{23} - 50 q^{25} + 12 q^{26} + 40 q^{27} - 104 q^{31} + 8 q^{32} - 32 q^{33} - 4 q^{36} - 6 q^{37} + 40 q^{38} + 20 q^{40} + 16 q^{41} - 84 q^{43} - 10 q^{45} + 8 q^{46} + 36 q^{47} - 16 q^{48} + 50 q^{50} - 56 q^{51} - 12 q^{52} + 106 q^{53} + 80 q^{57} + 80 q^{58} - 40 q^{60} + 96 q^{61} + 104 q^{62} - 30 q^{65} + 64 q^{66} + 124 q^{67} + 28 q^{68} - 56 q^{71} + 4 q^{72} + 94 q^{73} - 100 q^{75} - 80 q^{76} + 24 q^{78} + 142 q^{81} - 16 q^{82} - 36 q^{83} + 70 q^{85} + 168 q^{86} + 160 q^{87} - 32 q^{88} + 10 q^{90} - 8 q^{92} - 208 q^{93} - 200 q^{95} + 32 q^{96} + 126 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/490\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(197\)
\(\chi(n)\) \(1\) \(i\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
197.1
1.00000i
1.00000i
−1.00000 1.00000i 2.00000 2.00000i 2.00000i 5.00000i −4.00000 0 2.00000 2.00000i 1.00000i 5.00000 5.00000i
393.1 −1.00000 + 1.00000i 2.00000 + 2.00000i 2.00000i 5.00000i −4.00000 0 2.00000 + 2.00000i 1.00000i 5.00000 + 5.00000i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.c odd 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 490.3.f.b 2
5.c odd 4 1 inner 490.3.f.b 2
7.b odd 2 1 10.3.c.a 2
21.c even 2 1 90.3.g.b 2
28.d even 2 1 80.3.p.c 2
35.c odd 2 1 50.3.c.c 2
35.f even 4 1 10.3.c.a 2
35.f even 4 1 50.3.c.c 2
56.e even 2 1 320.3.p.a 2
56.h odd 2 1 320.3.p.h 2
84.h odd 2 1 720.3.bh.c 2
105.g even 2 1 450.3.g.b 2
105.k odd 4 1 90.3.g.b 2
105.k odd 4 1 450.3.g.b 2
140.c even 2 1 400.3.p.b 2
140.j odd 4 1 80.3.p.c 2
140.j odd 4 1 400.3.p.b 2
280.s even 4 1 320.3.p.h 2
280.y odd 4 1 320.3.p.a 2
420.w even 4 1 720.3.bh.c 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
10.3.c.a 2 7.b odd 2 1
10.3.c.a 2 35.f even 4 1
50.3.c.c 2 35.c odd 2 1
50.3.c.c 2 35.f even 4 1
80.3.p.c 2 28.d even 2 1
80.3.p.c 2 140.j odd 4 1
90.3.g.b 2 21.c even 2 1
90.3.g.b 2 105.k odd 4 1
320.3.p.a 2 56.e even 2 1
320.3.p.a 2 280.y odd 4 1
320.3.p.h 2 56.h odd 2 1
320.3.p.h 2 280.s even 4 1
400.3.p.b 2 140.c even 2 1
400.3.p.b 2 140.j odd 4 1
450.3.g.b 2 105.g even 2 1
450.3.g.b 2 105.k odd 4 1
490.3.f.b 2 1.a even 1 1 trivial
490.3.f.b 2 5.c odd 4 1 inner
720.3.bh.c 2 84.h odd 2 1
720.3.bh.c 2 420.w even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{3}^{\mathrm{new}}(490, [\chi])\):

\( T_{3}^{2} - 4T_{3} + 8 \) Copy content Toggle raw display
\( T_{11} + 8 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + 2T + 2 \) Copy content Toggle raw display
$3$ \( T^{2} - 4T + 8 \) Copy content Toggle raw display
$5$ \( T^{2} + 25 \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( (T + 8)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 6T + 18 \) Copy content Toggle raw display
$17$ \( T^{2} + 14T + 98 \) Copy content Toggle raw display
$19$ \( T^{2} + 400 \) Copy content Toggle raw display
$23$ \( T^{2} + 4T + 8 \) Copy content Toggle raw display
$29$ \( T^{2} + 1600 \) Copy content Toggle raw display
$31$ \( (T + 52)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 6T + 18 \) Copy content Toggle raw display
$41$ \( (T - 8)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 84T + 3528 \) Copy content Toggle raw display
$47$ \( T^{2} - 36T + 648 \) Copy content Toggle raw display
$53$ \( T^{2} - 106T + 5618 \) Copy content Toggle raw display
$59$ \( T^{2} + 400 \) Copy content Toggle raw display
$61$ \( (T - 48)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} - 124T + 7688 \) Copy content Toggle raw display
$71$ \( (T + 28)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} - 94T + 4418 \) Copy content Toggle raw display
$79$ \( T^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 36T + 648 \) Copy content Toggle raw display
$89$ \( T^{2} + 6400 \) Copy content Toggle raw display
$97$ \( T^{2} - 126T + 7938 \) Copy content Toggle raw display
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