Properties

Label 1368.1.ce.b
Level $1368$
Weight $1$
Character orbit 1368.ce
Analytic conductor $0.683$
Analytic rank $0$
Dimension $6$
Projective image $D_{9}$
CM discriminant -152
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1368,1,Mod(493,1368)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1368, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 3, 4, 3]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1368.493");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1368 = 2^{3} \cdot 3^{2} \cdot 19 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1368.ce (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: \(0.682720937282\)
Analytic rank: \(0\)
Dimension: \(6\)
Relative dimension: \(3\) over \(\Q(\zeta_{6})\)
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: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{9}\)
Projective field: Galois closure of 9.1.283680450809856.6

$q$-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.

\(f(q)\) \(=\) \( q - \zeta_{18}^{6} q^{2} + \zeta_{18}^{7} q^{3} - \zeta_{18}^{3} q^{4} + \zeta_{18}^{4} q^{6} + (\zeta_{18}^{8} + \zeta_{18}^{4}) q^{7} - q^{8} - \zeta_{18}^{5} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{18}^{6} q^{2} + \zeta_{18}^{7} q^{3} - \zeta_{18}^{3} q^{4} + \zeta_{18}^{4} q^{6} + (\zeta_{18}^{8} + \zeta_{18}^{4}) q^{7} - q^{8} - \zeta_{18}^{5} q^{9} + \zeta_{18} q^{12} + ( - \zeta_{18}^{8} + \zeta_{18}^{7}) q^{13} + (\zeta_{18}^{5} + \zeta_{18}) q^{14} + \zeta_{18}^{6} q^{16} + ( - \zeta_{18}^{7} + \zeta_{18}^{2}) q^{17} - \zeta_{18}^{2} q^{18} - q^{19} + ( - \zeta_{18}^{6} - \zeta_{18}^{2}) q^{21} + (\zeta_{18}^{4} + \zeta_{18}^{2}) q^{23} - \zeta_{18}^{7} q^{24} + \zeta_{18}^{6} q^{25} + ( - \zeta_{18}^{5} + \zeta_{18}^{4}) q^{26} + \zeta_{18}^{3} q^{27} + ( - \zeta_{18}^{7} + \zeta_{18}^{2}) q^{28} + (\zeta_{18}^{7} + \zeta_{18}^{5}) q^{29} + \zeta_{18}^{3} q^{32} + ( - \zeta_{18}^{8} - \zeta_{18}^{4}) q^{34} + \zeta_{18}^{8} q^{36} + q^{37} + \zeta_{18}^{6} q^{38} + (\zeta_{18}^{6} - \zeta_{18}^{5}) q^{39} + (\zeta_{18}^{8} - \zeta_{18}^{3}) q^{42} + ( - \zeta_{18}^{8} + \zeta_{18}) q^{46} - \zeta_{18}^{6} q^{47} - \zeta_{18}^{4} q^{48} + (\zeta_{18}^{8} + \cdots - \zeta_{18}^{3}) q^{49} + \cdots + (\zeta_{18}^{5} - \zeta_{18}^{4} - 1) q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + 3 q^{2} - 3 q^{4} - 6 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 6 q + 3 q^{2} - 3 q^{4} - 6 q^{8} - 3 q^{16} - 6 q^{19} + 3 q^{21} - 3 q^{25} + 3 q^{27} + 3 q^{32} + 6 q^{37} - 3 q^{38} - 3 q^{39} - 3 q^{42} + 3 q^{47} - 3 q^{49} + 3 q^{50} - 6 q^{51} + 6 q^{54} + 6 q^{63} + 6 q^{64} - 6 q^{69} + 3 q^{74} + 3 q^{76} + 3 q^{78} - 6 q^{84} - 3 q^{87} + 6 q^{91} - 3 q^{94} - 6 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1368\mathbb{Z}\right)^\times\).

\(n\) \(343\) \(685\) \(1009\) \(1217\)
\(\chi(n)\) \(1\) \(-1\) \(-1\) \(-\zeta_{18}^{3}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
493.1
0.939693 + 0.342020i
−0.766044 + 0.642788i
−0.173648 0.984808i
0.939693 0.342020i
−0.766044 0.642788i
−0.173648 + 0.984808i
0.500000 0.866025i −0.766044 + 0.642788i −0.500000 0.866025i 0 0.173648 + 0.984808i −0.766044 + 1.32683i −1.00000 0.173648 0.984808i 0
493.2 0.500000 0.866025i −0.173648 0.984808i −0.500000 0.866025i 0 −0.939693 0.342020i −0.173648 + 0.300767i −1.00000 −0.939693 + 0.342020i 0
493.3 0.500000 0.866025i 0.939693 + 0.342020i −0.500000 0.866025i 0 0.766044 0.642788i 0.939693 1.62760i −1.00000 0.766044 + 0.642788i 0
949.1 0.500000 + 0.866025i −0.766044 0.642788i −0.500000 + 0.866025i 0 0.173648 0.984808i −0.766044 1.32683i −1.00000 0.173648 + 0.984808i 0
949.2 0.500000 + 0.866025i −0.173648 + 0.984808i −0.500000 + 0.866025i 0 −0.939693 + 0.342020i −0.173648 0.300767i −1.00000 −0.939693 0.342020i 0
949.3 0.500000 + 0.866025i 0.939693 0.342020i −0.500000 + 0.866025i 0 0.766044 + 0.642788i 0.939693 + 1.62760i −1.00000 0.766044 0.642788i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 493.3
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
152.g odd 2 1 CM by \(\Q(\sqrt{-38}) \)
9.c even 3 1 inner
1368.ce odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1368.1.ce.b yes 6
8.b even 2 1 1368.1.ce.a 6
9.c even 3 1 inner 1368.1.ce.b yes 6
19.b odd 2 1 1368.1.ce.a 6
72.n even 6 1 1368.1.ce.a 6
152.g odd 2 1 CM 1368.1.ce.b yes 6
171.o odd 6 1 1368.1.ce.a 6
1368.ce odd 6 1 inner 1368.1.ce.b yes 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1368.1.ce.a 6 8.b even 2 1
1368.1.ce.a 6 19.b odd 2 1
1368.1.ce.a 6 72.n even 6 1
1368.1.ce.a 6 171.o odd 6 1
1368.1.ce.b yes 6 1.a even 1 1 trivial
1368.1.ce.b yes 6 9.c even 3 1 inner
1368.1.ce.b yes 6 152.g odd 2 1 CM
1368.1.ce.b yes 6 1368.ce odd 6 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{13}^{6} + 3T_{13}^{4} - 2T_{13}^{3} + 9T_{13}^{2} - 3T_{13} + 1 \) acting on \(S_{1}^{\mathrm{new}}(1368, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} - T + 1)^{3} \) Copy content Toggle raw display
$3$ \( T^{6} - T^{3} + 1 \) Copy content Toggle raw display
$5$ \( T^{6} \) Copy content Toggle raw display
$7$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{6} \) Copy content Toggle raw display
$13$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$17$ \( (T^{3} - 3 T + 1)^{2} \) Copy content Toggle raw display
$19$ \( (T + 1)^{6} \) Copy content Toggle raw display
$23$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$29$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{6} \) Copy content Toggle raw display
$37$ \( (T - 1)^{6} \) Copy content Toggle raw display
$41$ \( T^{6} \) Copy content Toggle raw display
$43$ \( T^{6} \) Copy content Toggle raw display
$47$ \( (T^{2} - T + 1)^{3} \) Copy content Toggle raw display
$53$ \( (T^{3} - 3 T - 1)^{2} \) Copy content Toggle raw display
$59$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$61$ \( T^{6} \) Copy content Toggle raw display
$67$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$71$ \( T^{6} \) Copy content Toggle raw display
$73$ \( (T^{3} - 3 T + 1)^{2} \) Copy content Toggle raw display
$79$ \( T^{6} \) Copy content Toggle raw display
$83$ \( T^{6} \) Copy content Toggle raw display
$89$ \( T^{6} \) Copy content Toggle raw display
$97$ \( T^{6} \) Copy content Toggle raw display
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