Properties

Label 2028.1.bm.a
Level $2028$
Weight $1$
Character orbit 2028.bm
Analytic conductor $1.012$
Analytic rank $0$
Dimension $24$
Projective image $D_{78}$
CM discriminant -3
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2028,1,Mod(17,2028)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2028, base_ring=CyclotomicField(78))
 
chi = DirichletCharacter(H, H._module([0, 39, 73]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2028.17");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2028 = 2^{2} \cdot 3 \cdot 13^{2} \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2028.bm (of order \(78\), degree \(24\), 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: \(1.01210384562\)
Analytic rank: \(0\)
Dimension: \(24\)
Coefficient field: \(\Q(\zeta_{39})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{24} - x^{23} + x^{21} - x^{20} + x^{18} - x^{17} + x^{15} - x^{14} + x^{12} - x^{10} + x^{9} + \cdots + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{78}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{78} - \cdots)\)

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q + \zeta_{78}^{29} q^{3} + (\zeta_{78}^{15} + \zeta_{78}^{8}) q^{7} - \zeta_{78}^{19} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{78}^{29} q^{3} + (\zeta_{78}^{15} + \zeta_{78}^{8}) q^{7} - \zeta_{78}^{19} q^{9} + \zeta_{78}^{13} q^{13} + (\zeta_{78}^{19} - \zeta_{78}^{7}) q^{19} + (\zeta_{78}^{37} - \zeta_{78}^{5}) q^{21} - \zeta_{78}^{30} q^{25} + \zeta_{78}^{9} q^{27} + (\zeta_{78}^{10} - \zeta_{78}^{8}) q^{31} + ( - \zeta_{78}^{17} - \zeta_{78}^{14}) q^{37} - \zeta_{78}^{3} q^{39} + ( - \zeta_{78}^{35} + \zeta_{78}^{12}) q^{43} + (\zeta_{78}^{30} + \cdots + \zeta_{78}^{16}) q^{49} + \cdots + ( - \zeta_{78}^{24} - \zeta_{78}^{11}) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 24 q - q^{3} + 3 q^{7} + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 24 q - q^{3} + 3 q^{7} + q^{9} + 12 q^{13} + 2 q^{25} + 2 q^{27} - 2 q^{39} - q^{43} - 2 q^{49} + q^{61} - 3 q^{63} - 3 q^{67} + q^{75} - 2 q^{79} + q^{81} + 3 q^{91} - 23 q^{93} + 3 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2028\mathbb{Z}\right)^\times\).

\(n\) \(677\) \(1015\) \(1861\)
\(\chi(n)\) \(-1\) \(1\) \(\zeta_{78}^{25}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
17.1
0.799443 0.600742i
−0.200026 0.979791i
0.428693 0.903450i
−0.996757 + 0.0804666i
−0.0402659 0.999189i
−0.0402659 + 0.999189i
0.987050 + 0.160411i
−0.845190 0.534466i
0.278217 0.960518i
−0.996757 0.0804666i
−0.919979 0.391967i
−0.919979 + 0.391967i
−0.632445 + 0.774605i
0.799443 + 0.600742i
−0.200026 + 0.979791i
0.692724 0.721202i
0.278217 + 0.960518i
−0.632445 0.774605i
0.692724 + 0.721202i
−0.845190 + 0.534466i
0 −0.987050 0.160411i 0 0 0 1.39963 + 0.664135i 0 0.948536 + 0.316668i 0
101.1 0 −0.428693 + 0.903450i 0 0 0 −0.160803 0.00648012i 0 −0.632445 0.774605i 0
173.1 0 −0.278217 + 0.960518i 0 0 0 −0.565375 1.32698i 0 −0.845190 0.534466i 0
257.1 0 −0.692724 0.721202i 0 0 0 1.15405 1.53576i 0 −0.0402659 + 0.999189i 0
329.1 0 0.919979 + 0.391967i 0 0 0 0.380472 1.13965i 0 0.692724 + 0.721202i 0
413.1 0 0.919979 0.391967i 0 0 0 0.380472 + 1.13965i 0 0.692724 0.721202i 0
569.1 0 0.0402659 + 0.999189i 0 0 0 1.02673 + 0.297395i 0 −0.996757 + 0.0804666i 0
641.1 0 −0.799443 0.600742i 0 0 0 −0.768090 0.156807i 0 0.278217 + 0.960518i 0
725.1 0 −0.948536 0.316668i 0 0 0 −1.51790 + 1.23933i 0 0.799443 + 0.600742i 0
797.1 0 −0.692724 + 0.721202i 0 0 0 1.15405 + 1.53576i 0 −0.0402659 0.999189i 0
881.1 0 0.632445 0.774605i 0 0 0 −0.0258155 0.319782i 0 −0.200026 0.979791i 0
953.1 0 0.632445 + 0.774605i 0 0 0 −0.0258155 + 0.319782i 0 −0.200026 + 0.979791i 0
1109.1 0 0.845190 0.534466i 0 0 0 1.44124 1.38433i 0 0.428693 0.903450i 0
1193.1 0 −0.987050 + 0.160411i 0 0 0 1.39963 0.664135i 0 0.948536 0.316668i 0
1265.1 0 −0.428693 0.903450i 0 0 0 −0.160803 + 0.00648012i 0 −0.632445 + 0.774605i 0
1349.1 0 0.200026 0.979791i 0 0 0 0.101594 0.625134i 0 −0.919979 0.391967i 0
1421.1 0 −0.948536 + 0.316668i 0 0 0 −1.51790 1.23933i 0 0.799443 0.600742i 0
1505.1 0 0.845190 + 0.534466i 0 0 0 1.44124 + 1.38433i 0 0.428693 + 0.903450i 0
1577.1 0 0.200026 + 0.979791i 0 0 0 0.101594 + 0.625134i 0 −0.919979 + 0.391967i 0
1661.1 0 −0.799443 + 0.600742i 0 0 0 −0.768090 + 0.156807i 0 0.278217 0.960518i 0
See all 24 embeddings
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 17.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 CM by \(\Q(\sqrt{-3}) \)
169.k even 78 1 inner
507.v odd 78 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2028.1.bm.a 24
3.b odd 2 1 CM 2028.1.bm.a 24
169.k even 78 1 inner 2028.1.bm.a 24
507.v odd 78 1 inner 2028.1.bm.a 24
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2028.1.bm.a 24 1.a even 1 1 trivial
2028.1.bm.a 24 3.b odd 2 1 CM
2028.1.bm.a 24 169.k even 78 1 inner
2028.1.bm.a 24 507.v odd 78 1 inner

Hecke kernels

This newform subspace is the entire newspace \(S_{1}^{\mathrm{new}}(2028, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{24} \) Copy content Toggle raw display
$3$ \( T^{24} + T^{23} + \cdots + 1 \) Copy content Toggle raw display
$5$ \( T^{24} \) Copy content Toggle raw display
$7$ \( T^{24} - 3 T^{23} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{24} \) Copy content Toggle raw display
$13$ \( (T^{2} - T + 1)^{12} \) Copy content Toggle raw display
$17$ \( T^{24} \) Copy content Toggle raw display
$19$ \( T^{24} - 13 T^{22} + \cdots + 169 \) Copy content Toggle raw display
$23$ \( T^{24} \) Copy content Toggle raw display
$29$ \( T^{24} \) Copy content Toggle raw display
$31$ \( T^{24} - 3 T^{22} + \cdots + 1 \) Copy content Toggle raw display
$37$ \( T^{24} - 13 T^{20} + \cdots + 169 \) Copy content Toggle raw display
$41$ \( T^{24} \) Copy content Toggle raw display
$43$ \( T^{24} + T^{23} + \cdots + 1 \) Copy content Toggle raw display
$47$ \( T^{24} \) Copy content Toggle raw display
$53$ \( T^{24} \) Copy content Toggle raw display
$59$ \( T^{24} \) Copy content Toggle raw display
$61$ \( T^{24} - T^{23} + \cdots + 1 \) Copy content Toggle raw display
$67$ \( T^{24} + 3 T^{23} + \cdots + 1 \) Copy content Toggle raw display
$71$ \( T^{24} \) Copy content Toggle raw display
$73$ \( T^{24} - 3 T^{22} + \cdots + 1 \) Copy content Toggle raw display
$79$ \( T^{24} + 2 T^{23} + \cdots + 1 \) Copy content Toggle raw display
$83$ \( T^{24} \) Copy content Toggle raw display
$89$ \( T^{24} \) Copy content Toggle raw display
$97$ \( T^{24} - 3 T^{23} + \cdots + 531441 \) Copy content Toggle raw display
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