Properties

Label 1840.4.a.c
Level $1840$
Weight $4$
Character orbit 1840.a
Self dual yes
Analytic conductor $108.564$
Analytic rank $1$
Dimension $1$
CM no
Inner twists $1$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1840,4,Mod(1,1840)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1840, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1840.1");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1840 = 2^{4} \cdot 5 \cdot 23 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1840.a (trivial)

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: yes
Analytic conductor: \(108.563514411\)
Analytic rank: \(1\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 115)
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 
\(f(q)\) \(=\) \( q - 4 q^{3} - 5 q^{5} + 32 q^{7} - 11 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - 4 q^{3} - 5 q^{5} + 32 q^{7} - 11 q^{9} - 40 q^{11} - 66 q^{13} + 20 q^{15} + 130 q^{17} + 88 q^{19} - 128 q^{21} - 23 q^{23} + 25 q^{25} + 152 q^{27} - 130 q^{29} - 40 q^{31} + 160 q^{33} - 160 q^{35} - 334 q^{37} + 264 q^{39} - 22 q^{41} + 272 q^{43} + 55 q^{45} - 24 q^{47} + 681 q^{49} - 520 q^{51} + 258 q^{53} + 200 q^{55} - 352 q^{57} - 612 q^{59} - 366 q^{61} - 352 q^{63} + 330 q^{65} + 496 q^{67} + 92 q^{69} - 248 q^{71} + 826 q^{73} - 100 q^{75} - 1280 q^{77} + 296 q^{79} - 311 q^{81} + 1296 q^{83} - 650 q^{85} + 520 q^{87} - 646 q^{89} - 2112 q^{91} + 160 q^{93} - 440 q^{95} - 1438 q^{97} + 440 q^{99}+O(q^{100}) \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
0
0 −4.00000 0 −5.00000 0 32.0000 0 −11.0000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)
\(5\) \(1\)
\(23\) \(1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1840.4.a.c 1
4.b odd 2 1 115.4.a.a 1
12.b even 2 1 1035.4.a.b 1
20.d odd 2 1 575.4.a.b 1
20.e even 4 2 575.4.b.e 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
115.4.a.a 1 4.b odd 2 1
575.4.a.b 1 20.d odd 2 1
575.4.b.e 2 20.e even 4 2
1035.4.a.b 1 12.b even 2 1
1840.4.a.c 1 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(1840))\):

\( T_{3} + 4 \) Copy content Toggle raw display
\( T_{7} - 32 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T \) Copy content Toggle raw display
$3$ \( T + 4 \) Copy content Toggle raw display
$5$ \( T + 5 \) Copy content Toggle raw display
$7$ \( T - 32 \) Copy content Toggle raw display
$11$ \( T + 40 \) Copy content Toggle raw display
$13$ \( T + 66 \) Copy content Toggle raw display
$17$ \( T - 130 \) Copy content Toggle raw display
$19$ \( T - 88 \) Copy content Toggle raw display
$23$ \( T + 23 \) Copy content Toggle raw display
$29$ \( T + 130 \) Copy content Toggle raw display
$31$ \( T + 40 \) Copy content Toggle raw display
$37$ \( T + 334 \) Copy content Toggle raw display
$41$ \( T + 22 \) Copy content Toggle raw display
$43$ \( T - 272 \) Copy content Toggle raw display
$47$ \( T + 24 \) Copy content Toggle raw display
$53$ \( T - 258 \) Copy content Toggle raw display
$59$ \( T + 612 \) Copy content Toggle raw display
$61$ \( T + 366 \) Copy content Toggle raw display
$67$ \( T - 496 \) Copy content Toggle raw display
$71$ \( T + 248 \) Copy content Toggle raw display
$73$ \( T - 826 \) Copy content Toggle raw display
$79$ \( T - 296 \) Copy content Toggle raw display
$83$ \( T - 1296 \) Copy content Toggle raw display
$89$ \( T + 646 \) Copy content Toggle raw display
$97$ \( T + 1438 \) Copy content Toggle raw display
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