Properties

Label 1560.2.l.b
Level $1560$
Weight $2$
Character orbit 1560.l
Analytic conductor $12.457$
Analytic rank $0$
Dimension $2$
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1560,2,Mod(1249,1560)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1560, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 1, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1560.1249");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1560 = 2^{3} \cdot 3 \cdot 5 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1560.l (of order \(2\), degree \(1\), 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: \(12.4566627153\)
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: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 \(i = \sqrt{-1}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - i q^{3} + (2 i + 1) q^{5} + i q^{7} - q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - i q^{3} + (2 i + 1) q^{5} + i q^{7} - q^{9} + 3 q^{11} + i q^{13} + ( - i + 2) q^{15} - 7 i q^{17} + q^{21} + 7 i q^{23} + (4 i - 3) q^{25} + i q^{27} + 4 q^{29} + 8 q^{31} - 3 i q^{33} + (i - 2) q^{35} - 5 i q^{37} + q^{39} - 3 q^{41} + 8 i q^{43} + ( - 2 i - 1) q^{45} + 6 i q^{47} + 6 q^{49} - 7 q^{51} + 11 i q^{53} + (6 i + 3) q^{55} + 4 q^{59} + q^{61} - i q^{63} + (i - 2) q^{65} + 12 i q^{67} + 7 q^{69} - 9 q^{71} - 6 i q^{73} + (3 i + 4) q^{75} + 3 i q^{77} + 13 q^{79} + q^{81} + 2 i q^{83} + ( - 7 i + 14) q^{85} - 4 i q^{87} - 3 q^{89} - q^{91} - 8 i q^{93} - 19 i q^{97} - 3 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 2 q^{5} - 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 2 q^{5} - 2 q^{9} + 6 q^{11} + 4 q^{15} + 2 q^{21} - 6 q^{25} + 8 q^{29} + 16 q^{31} - 4 q^{35} + 2 q^{39} - 6 q^{41} - 2 q^{45} + 12 q^{49} - 14 q^{51} + 6 q^{55} + 8 q^{59} + 2 q^{61} - 4 q^{65} + 14 q^{69} - 18 q^{71} + 8 q^{75} + 26 q^{79} + 2 q^{81} + 28 q^{85} - 6 q^{89} - 2 q^{91} - 6 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1560\mathbb{Z}\right)^\times\).

\(n\) \(391\) \(521\) \(781\) \(937\) \(1081\)
\(\chi(n)\) \(1\) \(1\) \(1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1249.1
1.00000i
1.00000i
0 1.00000i 0 1.00000 + 2.00000i 0 1.00000i 0 −1.00000 0
1249.2 0 1.00000i 0 1.00000 2.00000i 0 1.00000i 0 −1.00000 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
5.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1560.2.l.b 2
3.b odd 2 1 4680.2.l.b 2
4.b odd 2 1 3120.2.l.e 2
5.b even 2 1 inner 1560.2.l.b 2
5.c odd 4 1 7800.2.a.b 1
5.c odd 4 1 7800.2.a.v 1
15.d odd 2 1 4680.2.l.b 2
20.d odd 2 1 3120.2.l.e 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1560.2.l.b 2 1.a even 1 1 trivial
1560.2.l.b 2 5.b even 2 1 inner
3120.2.l.e 2 4.b odd 2 1
3120.2.l.e 2 20.d odd 2 1
4680.2.l.b 2 3.b odd 2 1
4680.2.l.b 2 15.d odd 2 1
7800.2.a.b 1 5.c odd 4 1
7800.2.a.v 1 5.c odd 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{2} + 1 \) acting on \(S_{2}^{\mathrm{new}}(1560, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} + 1 \) Copy content Toggle raw display
$5$ \( T^{2} - 2T + 5 \) Copy content Toggle raw display
$7$ \( T^{2} + 1 \) Copy content Toggle raw display
$11$ \( (T - 3)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 1 \) Copy content Toggle raw display
$17$ \( T^{2} + 49 \) Copy content Toggle raw display
$19$ \( T^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 49 \) Copy content Toggle raw display
$29$ \( (T - 4)^{2} \) Copy content Toggle raw display
$31$ \( (T - 8)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 25 \) Copy content Toggle raw display
$41$ \( (T + 3)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 64 \) Copy content Toggle raw display
$47$ \( T^{2} + 36 \) Copy content Toggle raw display
$53$ \( T^{2} + 121 \) Copy content Toggle raw display
$59$ \( (T - 4)^{2} \) Copy content Toggle raw display
$61$ \( (T - 1)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} + 144 \) Copy content Toggle raw display
$71$ \( (T + 9)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 36 \) Copy content Toggle raw display
$79$ \( (T - 13)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 4 \) Copy content Toggle raw display
$89$ \( (T + 3)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 361 \) Copy content Toggle raw display
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