Properties

Label 1600.2.c.l
Level $1600$
Weight $2$
Character orbit 1600.c
Analytic conductor $12.776$
Analytic rank $0$
Dimension $2$
CM discriminant -4
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1600,2,Mod(449,1600)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1600, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1600.449");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1600 = 2^{6} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1600.c (of order \(2\), degree \(1\), 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: \(12.7760643234\)
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: \(\Z[a_1, \ldots, a_{17}]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 32)
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

$q$-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 \(\beta = 2i\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 3 q^{9} - 3 \beta q^{13} - \beta q^{17} - 10 q^{29} - \beta q^{37} + 10 q^{41} + 7 q^{49} - 7 \beta q^{53} + 10 q^{61} - 3 \beta q^{73} + 9 q^{81} - 10 q^{89} - 9 \beta q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 6 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 6 q^{9} - 20 q^{29} + 20 q^{41} + 14 q^{49} + 20 q^{61} + 18 q^{81} - 20 q^{89}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1600\mathbb{Z}\right)^\times\).

\(n\) \(577\) \(901\) \(1151\)
\(\chi(n)\) \(-1\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
449.1
1.00000i
1.00000i
0 0 0 0 0 0 0 3.00000 0
449.2 0 0 0 0 0 0 0 3.00000 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
4.b odd 2 1 CM by \(\Q(\sqrt{-1}) \)
5.b even 2 1 inner
20.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1600.2.c.l 2
4.b odd 2 1 CM 1600.2.c.l 2
5.b even 2 1 inner 1600.2.c.l 2
5.c odd 4 1 64.2.a.a 1
5.c odd 4 1 1600.2.a.n 1
8.b even 2 1 800.2.c.e 2
8.d odd 2 1 800.2.c.e 2
15.e even 4 1 576.2.a.c 1
20.d odd 2 1 inner 1600.2.c.l 2
20.e even 4 1 64.2.a.a 1
20.e even 4 1 1600.2.a.n 1
24.f even 2 1 7200.2.f.m 2
24.h odd 2 1 7200.2.f.m 2
35.f even 4 1 3136.2.a.m 1
40.e odd 2 1 800.2.c.e 2
40.f even 2 1 800.2.c.e 2
40.i odd 4 1 32.2.a.a 1
40.i odd 4 1 800.2.a.d 1
40.k even 4 1 32.2.a.a 1
40.k even 4 1 800.2.a.d 1
55.e even 4 1 7744.2.a.v 1
60.l odd 4 1 576.2.a.c 1
80.i odd 4 1 256.2.b.b 2
80.j even 4 1 256.2.b.b 2
80.s even 4 1 256.2.b.b 2
80.t odd 4 1 256.2.b.b 2
120.i odd 2 1 7200.2.f.m 2
120.m even 2 1 7200.2.f.m 2
120.q odd 4 1 288.2.a.d 1
120.q odd 4 1 7200.2.a.v 1
120.w even 4 1 288.2.a.d 1
120.w even 4 1 7200.2.a.v 1
140.j odd 4 1 3136.2.a.m 1
160.u even 8 2 1024.2.e.j 4
160.v odd 8 2 1024.2.e.j 4
160.ba even 8 2 1024.2.e.j 4
160.bb odd 8 2 1024.2.e.j 4
220.i odd 4 1 7744.2.a.v 1
240.z odd 4 1 2304.2.d.j 2
240.bb even 4 1 2304.2.d.j 2
240.bd odd 4 1 2304.2.d.j 2
240.bf even 4 1 2304.2.d.j 2
280.s even 4 1 1568.2.a.e 1
280.y odd 4 1 1568.2.a.e 1
280.bp odd 12 2 1568.2.i.f 2
280.br even 12 2 1568.2.i.g 2
280.bt odd 12 2 1568.2.i.g 2
280.bv even 12 2 1568.2.i.f 2
360.bo even 12 2 2592.2.i.t 2
360.br even 12 2 2592.2.i.e 2
360.bt odd 12 2 2592.2.i.e 2
360.bu odd 12 2 2592.2.i.t 2
440.t even 4 1 3872.2.a.f 1
440.w odd 4 1 3872.2.a.f 1
520.bc even 4 1 5408.2.a.g 1
520.bg odd 4 1 5408.2.a.g 1
680.u even 4 1 9248.2.a.f 1
680.bi odd 4 1 9248.2.a.f 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
32.2.a.a 1 40.i odd 4 1
32.2.a.a 1 40.k even 4 1
64.2.a.a 1 5.c odd 4 1
64.2.a.a 1 20.e even 4 1
256.2.b.b 2 80.i odd 4 1
256.2.b.b 2 80.j even 4 1
256.2.b.b 2 80.s even 4 1
256.2.b.b 2 80.t odd 4 1
288.2.a.d 1 120.q odd 4 1
288.2.a.d 1 120.w even 4 1
576.2.a.c 1 15.e even 4 1
576.2.a.c 1 60.l odd 4 1
800.2.a.d 1 40.i odd 4 1
800.2.a.d 1 40.k even 4 1
800.2.c.e 2 8.b even 2 1
800.2.c.e 2 8.d odd 2 1
800.2.c.e 2 40.e odd 2 1
800.2.c.e 2 40.f even 2 1
1024.2.e.j 4 160.u even 8 2
1024.2.e.j 4 160.v odd 8 2
1024.2.e.j 4 160.ba even 8 2
1024.2.e.j 4 160.bb odd 8 2
1568.2.a.e 1 280.s even 4 1
1568.2.a.e 1 280.y odd 4 1
1568.2.i.f 2 280.bp odd 12 2
1568.2.i.f 2 280.bv even 12 2
1568.2.i.g 2 280.br even 12 2
1568.2.i.g 2 280.bt odd 12 2
1600.2.a.n 1 5.c odd 4 1
1600.2.a.n 1 20.e even 4 1
1600.2.c.l 2 1.a even 1 1 trivial
1600.2.c.l 2 4.b odd 2 1 CM
1600.2.c.l 2 5.b even 2 1 inner
1600.2.c.l 2 20.d odd 2 1 inner
2304.2.d.j 2 240.z odd 4 1
2304.2.d.j 2 240.bb even 4 1
2304.2.d.j 2 240.bd odd 4 1
2304.2.d.j 2 240.bf even 4 1
2592.2.i.e 2 360.br even 12 2
2592.2.i.e 2 360.bt odd 12 2
2592.2.i.t 2 360.bo even 12 2
2592.2.i.t 2 360.bu odd 12 2
3136.2.a.m 1 35.f even 4 1
3136.2.a.m 1 140.j odd 4 1
3872.2.a.f 1 440.t even 4 1
3872.2.a.f 1 440.w odd 4 1
5408.2.a.g 1 520.bc even 4 1
5408.2.a.g 1 520.bg odd 4 1
7200.2.a.v 1 120.q odd 4 1
7200.2.a.v 1 120.w even 4 1
7200.2.f.m 2 24.f even 2 1
7200.2.f.m 2 24.h odd 2 1
7200.2.f.m 2 120.i odd 2 1
7200.2.f.m 2 120.m even 2 1
7744.2.a.v 1 55.e even 4 1
7744.2.a.v 1 220.i odd 4 1
9248.2.a.f 1 680.u even 4 1
9248.2.a.f 1 680.bi odd 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1600, [\chi])\):

\( T_{3} \) Copy content Toggle raw display
\( T_{7} \) Copy content Toggle raw display
\( T_{11} \) Copy content Toggle raw display
\( T_{19} \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 36 \) Copy content Toggle raw display
$17$ \( T^{2} + 4 \) Copy content Toggle raw display
$19$ \( T^{2} \) Copy content Toggle raw display
$23$ \( T^{2} \) Copy content Toggle raw display
$29$ \( (T + 10)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 4 \) Copy content Toggle raw display
$41$ \( (T - 10)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} \) Copy content Toggle raw display
$47$ \( T^{2} \) Copy content Toggle raw display
$53$ \( T^{2} + 196 \) Copy content Toggle raw display
$59$ \( T^{2} \) Copy content Toggle raw display
$61$ \( (T - 10)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} \) Copy content Toggle raw display
$71$ \( T^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 36 \) Copy content Toggle raw display
$79$ \( T^{2} \) Copy content Toggle raw display
$83$ \( T^{2} \) Copy content Toggle raw display
$89$ \( (T + 10)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 324 \) Copy content Toggle raw display
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