Properties

Label 57.3.l.a
Level $57$
Weight $3$
Character orbit 57.l
Analytic conductor $1.553$
Analytic rank $0$
Dimension $6$
CM discriminant -3
Inner twists $4$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [57,3,Mod(5,57)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(57, base_ring=CyclotomicField(18))
 
chi = DirichletCharacter(H, H._module([9, 16]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("57.5");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 57 = 3 \cdot 19 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 57.l (of order \(18\), degree \(6\), 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: \(1.55313750685\)
Analytic rank: \(0\)
Dimension: \(6\)
Coefficient field: \(\Q(\zeta_{18})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - x^{3} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{4}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{18}]$

$q$-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 \(\zeta_{18}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - 3 \zeta_{18}^{4} q^{3} + 4 \zeta_{18}^{2} q^{4} + ( - 8 \zeta_{18}^{5} + \cdots + 3 \zeta_{18}) q^{7} + \cdots + (9 \zeta_{18}^{5} - 9 \zeta_{18}^{2}) q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - 3 \zeta_{18}^{4} q^{3} + 4 \zeta_{18}^{2} q^{4} + ( - 8 \zeta_{18}^{5} + \cdots + 3 \zeta_{18}) q^{7} + \cdots - 167 \zeta_{18} q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q+O(q^{10}) \) Copy content Toggle raw display \( 6 q + 36 q^{12} - 3 q^{13} - 111 q^{19} - 99 q^{21} + 81 q^{27} + 132 q^{28} + 249 q^{43} - 147 q^{49} - 264 q^{52} + 222 q^{61} + 54 q^{63} - 192 q^{64} - 39 q^{67} + 429 q^{73} - 450 q^{75} - 426 q^{79} + 222 q^{91} + 414 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Character values

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

\(n\) \(20\) \(40\)
\(\chi(n)\) \(-1\) \(\zeta_{18}^{2}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
5.1
0.939693 0.342020i
−0.173648 + 0.984808i
0.939693 + 0.342020i
−0.766044 0.642788i
−0.766044 + 0.642788i
−0.173648 0.984808i
0 −0.520945 + 2.95442i 3.06418 2.57115i 0 0 6.64930 + 11.5169i 0 −8.45723 3.07818i 0
17.1 0 −2.29813 1.92836i −3.75877 1.36808i 0 0 −5.21941 9.04028i 0 1.56283 + 8.86327i 0
23.1 0 −0.520945 2.95442i 3.06418 + 2.57115i 0 0 6.64930 11.5169i 0 −8.45723 + 3.07818i 0
35.1 0 2.81908 1.02606i 0.694593 + 3.93923i 0 0 −1.42989 2.47665i 0 6.89440 5.78509i 0
44.1 0 2.81908 + 1.02606i 0.694593 3.93923i 0 0 −1.42989 + 2.47665i 0 6.89440 + 5.78509i 0
47.1 0 −2.29813 + 1.92836i −3.75877 + 1.36808i 0 0 −5.21941 + 9.04028i 0 1.56283 8.86327i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 5.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 CM by \(\Q(\sqrt{-3}) \)
19.e even 9 1 inner
57.l odd 18 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 57.3.l.a 6
3.b odd 2 1 CM 57.3.l.a 6
19.e even 9 1 inner 57.3.l.a 6
57.l odd 18 1 inner 57.3.l.a 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
57.3.l.a 6 1.a even 1 1 trivial
57.3.l.a 6 3.b odd 2 1 CM
57.3.l.a 6 19.e even 9 1 inner
57.3.l.a 6 57.l odd 18 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2} \) acting on \(S_{3}^{\mathrm{new}}(57, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{6} \) Copy content Toggle raw display
$3$ \( T^{6} - 27T^{3} + 729 \) Copy content Toggle raw display
$5$ \( T^{6} \) Copy content Toggle raw display
$7$ \( T^{6} + 147 T^{4} + \cdots + 157609 \) Copy content Toggle raw display
$11$ \( T^{6} \) Copy content Toggle raw display
$13$ \( T^{6} + 3 T^{5} + \cdots + 16265089 \) Copy content Toggle raw display
$17$ \( T^{6} \) Copy content Toggle raw display
$19$ \( (T^{2} + 37 T + 361)^{3} \) Copy content Toggle raw display
$23$ \( T^{6} \) Copy content Toggle raw display
$29$ \( T^{6} \) Copy content Toggle raw display
$31$ \( T^{6} + \cdots + 3507126841 \) Copy content Toggle raw display
$37$ \( (T^{3} - 4107 T - 3023)^{2} \) Copy content Toggle raw display
$41$ \( T^{6} \) Copy content Toggle raw display
$43$ \( T^{6} + \cdots + 23707684729 \) Copy content Toggle raw display
$47$ \( T^{6} \) Copy content Toggle raw display
$53$ \( T^{6} \) Copy content Toggle raw display
$59$ \( T^{6} \) Copy content Toggle raw display
$61$ \( T^{6} + \cdots + 3968874001 \) Copy content Toggle raw display
$67$ \( T^{6} + \cdots + 170175225529 \) Copy content Toggle raw display
$71$ \( T^{6} \) Copy content Toggle raw display
$73$ \( T^{6} + \cdots + 496451295649 \) Copy content Toggle raw display
$79$ \( T^{6} + \cdots + 879264411481 \) Copy content Toggle raw display
$83$ \( T^{6} \) Copy content Toggle raw display
$89$ \( T^{6} \) Copy content Toggle raw display
$97$ \( T^{6} + \cdots + 21691961596369 \) Copy content Toggle raw display
show more
show less