Properties

Label 57.2.f.a
Level $57$
Weight $2$
Character orbit 57.f
Analytic conductor $0.455$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [57,2,Mod(8,57)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(57, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("57.8");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 57 = 3 \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 57.f (of order \(6\), 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: \(0.455147291521\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\Q(\zeta_{24})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 a primitive root of unity \(\zeta_{24}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\zeta_{24}^{7} + \zeta_{24}^{5} - \zeta_{24}) q^{2} + ( - \zeta_{24}^{7} + \cdots + \zeta_{24}^{2}) q^{3}+ \cdots + ( - 2 \zeta_{24}^{7} + \cdots + 2 \zeta_{24}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{24}^{7} + \zeta_{24}^{5} - \zeta_{24}) q^{2} + ( - \zeta_{24}^{7} + \cdots + \zeta_{24}^{2}) q^{3}+ \cdots + (\zeta_{24}^{7} + 4 \zeta_{24}^{6} + \cdots - \zeta_{24}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 4 q^{6} - 16 q^{7} - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 4 q^{6} - 16 q^{7} - 4 q^{9} - 12 q^{10} + 12 q^{13} + 4 q^{16} - 12 q^{21} + 12 q^{22} + 4 q^{24} - 12 q^{25} + 12 q^{28} - 8 q^{30} + 24 q^{33} + 24 q^{34} + 16 q^{39} - 12 q^{40} - 20 q^{42} - 16 q^{43} + 32 q^{45} + 24 q^{48} - 48 q^{51} - 24 q^{52} - 4 q^{54} + 16 q^{55} - 28 q^{57} - 64 q^{58} - 24 q^{60} + 28 q^{61} + 8 q^{63} - 32 q^{64} - 4 q^{66} + 36 q^{70} - 24 q^{72} + 12 q^{73} + 60 q^{76} + 36 q^{78} + 24 q^{79} + 28 q^{81} + 16 q^{82} + 32 q^{87} + 12 q^{90} - 48 q^{91} - 4 q^{93} + 72 q^{96} + 24 q^{97} - 32 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/57\mathbb{Z}\right)^\times\).

\(n\) \(20\) \(40\)
\(\chi(n)\) \(-1\) \(\zeta_{24}^{4}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
8.1
0.965926 + 0.258819i
0.258819 0.965926i
−0.258819 + 0.965926i
−0.965926 0.258819i
0.965926 0.258819i
0.258819 + 0.965926i
−0.258819 0.965926i
−0.965926 + 0.258819i
−0.965926 + 1.67303i 1.57313 0.724745i −0.866025 1.50000i 1.22474 + 0.707107i −0.307007 + 3.33195i −3.73205 −0.517638 1.94949 2.28024i −2.36603 + 1.36603i
8.2 −0.258819 + 0.448288i −1.57313 + 0.724745i 0.866025 + 1.50000i 1.22474 + 0.707107i 0.0822623 0.892794i −0.267949 −1.93185 1.94949 2.28024i −0.633975 + 0.366025i
8.3 0.258819 0.448288i −0.158919 1.72474i 0.866025 + 1.50000i −1.22474 0.707107i −0.814313 0.375156i −0.267949 1.93185 −2.94949 + 0.548188i −0.633975 + 0.366025i
8.4 0.965926 1.67303i 0.158919 + 1.72474i −0.866025 1.50000i −1.22474 0.707107i 3.03906 + 1.40010i −3.73205 0.517638 −2.94949 + 0.548188i −2.36603 + 1.36603i
50.1 −0.965926 1.67303i 1.57313 + 0.724745i −0.866025 + 1.50000i 1.22474 0.707107i −0.307007 3.33195i −3.73205 −0.517638 1.94949 + 2.28024i −2.36603 1.36603i
50.2 −0.258819 0.448288i −1.57313 0.724745i 0.866025 1.50000i 1.22474 0.707107i 0.0822623 + 0.892794i −0.267949 −1.93185 1.94949 + 2.28024i −0.633975 0.366025i
50.3 0.258819 + 0.448288i −0.158919 + 1.72474i 0.866025 1.50000i −1.22474 + 0.707107i −0.814313 + 0.375156i −0.267949 1.93185 −2.94949 0.548188i −0.633975 0.366025i
50.4 0.965926 + 1.67303i 0.158919 1.72474i −0.866025 + 1.50000i −1.22474 + 0.707107i 3.03906 1.40010i −3.73205 0.517638 −2.94949 0.548188i −2.36603 1.36603i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 8.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
19.d odd 6 1 inner
57.f even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 57.2.f.a 8
3.b odd 2 1 inner 57.2.f.a 8
4.b odd 2 1 912.2.bn.m 8
12.b even 2 1 912.2.bn.m 8
19.c even 3 1 1083.2.d.b 8
19.d odd 6 1 inner 57.2.f.a 8
19.d odd 6 1 1083.2.d.b 8
57.f even 6 1 inner 57.2.f.a 8
57.f even 6 1 1083.2.d.b 8
57.h odd 6 1 1083.2.d.b 8
76.f even 6 1 912.2.bn.m 8
228.n odd 6 1 912.2.bn.m 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
57.2.f.a 8 1.a even 1 1 trivial
57.2.f.a 8 3.b odd 2 1 inner
57.2.f.a 8 19.d odd 6 1 inner
57.2.f.a 8 57.f even 6 1 inner
912.2.bn.m 8 4.b odd 2 1
912.2.bn.m 8 12.b even 2 1
912.2.bn.m 8 76.f even 6 1
912.2.bn.m 8 228.n odd 6 1
1083.2.d.b 8 19.c even 3 1
1083.2.d.b 8 19.d odd 6 1
1083.2.d.b 8 57.f even 6 1
1083.2.d.b 8 57.h odd 6 1

Hecke kernels

This newform subspace is the entire newspace \(S_{2}^{\mathrm{new}}(57, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} + 4 T^{6} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{8} + 2 T^{6} + \cdots + 81 \) Copy content Toggle raw display
$5$ \( (T^{4} - 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$7$ \( (T^{2} + 4 T + 1)^{4} \) Copy content Toggle raw display
$11$ \( (T^{4} + 28 T^{2} + 4)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} - 6 T^{3} + 11 T^{2} + \cdots + 1)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} - 24 T^{2} + 576)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 26 T^{2} + 361)^{2} \) Copy content Toggle raw display
$23$ \( T^{8} - 28 T^{6} + \cdots + 16 \) Copy content Toggle raw display
$29$ \( T^{8} + 64 T^{6} + \cdots + 65536 \) Copy content Toggle raw display
$31$ \( (T^{4} + 26 T^{2} + 121)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 78 T^{2} + 1089)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 32 T^{2} + 1024)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 8 T^{3} + \cdots + 169)^{2} \) Copy content Toggle raw display
$47$ \( T^{8} - 112 T^{6} + \cdots + 4096 \) Copy content Toggle raw display
$53$ \( T^{8} + 156 T^{6} + \cdots + 18974736 \) Copy content Toggle raw display
$59$ \( T^{8} + 196 T^{6} + \cdots + 78074896 \) Copy content Toggle raw display
$61$ \( (T^{4} - 14 T^{3} + \cdots + 1369)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} - T^{2} + 1)^{2} \) Copy content Toggle raw display
$71$ \( T^{8} + 192 T^{6} + \cdots + 5308416 \) Copy content Toggle raw display
$73$ \( (T^{2} - 3 T + 9)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} - 12 T^{3} + \cdots + 1369)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + 64 T^{2} + 256)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 54 T^{2} + 2916)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} - 12 T^{3} + \cdots + 16)^{2} \) Copy content Toggle raw display
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