Properties

Label 1944.1.r.c
Level $1944$
Weight $1$
Character orbit 1944.r
Analytic conductor $0.970$
Analytic rank $0$
Dimension $6$
Projective image $D_{9}$
CM discriminant -8
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1944,1,Mod(379,1944)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1944, base_ring=CyclotomicField(18))
 
chi = DirichletCharacter(H, H._module([9, 9, 4]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1944.379");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1944 = 2^{3} \cdot 3^{5} \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1944.r (of order \(18\), degree \(6\), not 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: \(0.970182384559\)
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: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 216)
Projective image: \(D_{9}\)
Projective field: Galois closure of 9.1.128536820158464.7

$q$-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.

\(f(q)\) \(=\) \( q - \zeta_{18}^{4} q^{2} + \zeta_{18}^{8} q^{4} + \zeta_{18}^{3} q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{18}^{4} q^{2} + \zeta_{18}^{8} q^{4} + \zeta_{18}^{3} q^{8} + (\zeta_{18}^{5} - 1) q^{11} - \zeta_{18}^{7} q^{16} + (\zeta_{18}^{7} + \zeta_{18}^{5}) q^{17} + (\zeta_{18}^{8} - \zeta_{18}^{7}) q^{19} + (\zeta_{18}^{4} + 1) q^{22} + \zeta_{18}^{4} q^{25} - \zeta_{18}^{2} q^{32} + (\zeta_{18}^{2} + 1) q^{34} + (\zeta_{18}^{3} - \zeta_{18}^{2}) q^{38} + (\zeta_{18} - 1) q^{41} + (\zeta_{18}^{8} + \zeta_{18}^{6}) q^{43} + ( - \zeta_{18}^{8} - \zeta_{18}^{4}) q^{44} + \zeta_{18}^{2} q^{49} - \zeta_{18}^{8} q^{50} + (\zeta_{18}^{7} - \zeta_{18}^{6}) q^{59} + \zeta_{18}^{6} q^{64} + ( - \zeta_{18}^{7} - \zeta_{18}^{3}) q^{67} + ( - \zeta_{18}^{6} - \zeta_{18}^{4}) q^{68} + (\zeta_{18}^{4} + \zeta_{18}^{2}) q^{73} + ( - \zeta_{18}^{7} + \zeta_{18}^{6}) q^{76} + ( - \zeta_{18}^{5} + \zeta_{18}^{4}) q^{82} + \zeta_{18}^{4} q^{83} + (\zeta_{18}^{3} + \zeta_{18}) q^{86} + (\zeta_{18}^{8} - \zeta_{18}^{3}) q^{88} - \zeta_{18}^{3} q^{89} + ( - \zeta_{18}^{5} + 1) q^{97} - \zeta_{18}^{6} q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + 3 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 6 q + 3 q^{8} - 6 q^{11} + 6 q^{22} + 6 q^{34} + 3 q^{38} - 6 q^{41} - 3 q^{43} + 3 q^{59} - 3 q^{64} - 3 q^{67} + 3 q^{68} - 3 q^{76} + 3 q^{86} - 3 q^{88} - 3 q^{89} + 6 q^{97} + 3 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1944\mathbb{Z}\right)^\times\).

\(n\) \(487\) \(973\) \(1217\)
\(\chi(n)\) \(-1\) \(-1\) \(\zeta_{18}^{8}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
379.1
−0.173648 + 0.984808i
−0.173648 0.984808i
−0.766044 0.642788i
0.939693 + 0.342020i
0.939693 0.342020i
−0.766044 + 0.642788i
−0.766044 0.642788i 0 0.173648 + 0.984808i 0 0 0 0.500000 0.866025i 0 0
595.1 −0.766044 + 0.642788i 0 0.173648 0.984808i 0 0 0 0.500000 + 0.866025i 0 0
1027.1 0.939693 0.342020i 0 0.766044 0.642788i 0 0 0 0.500000 0.866025i 0 0
1243.1 −0.173648 0.984808i 0 −0.939693 + 0.342020i 0 0 0 0.500000 + 0.866025i 0 0
1675.1 −0.173648 + 0.984808i 0 −0.939693 0.342020i 0 0 0 0.500000 0.866025i 0 0
1891.1 0.939693 + 0.342020i 0 0.766044 + 0.642788i 0 0 0 0.500000 + 0.866025i 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 379.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
8.d odd 2 1 CM by \(\Q(\sqrt{-2}) \)
27.e even 9 1 inner
216.r odd 18 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1944.1.r.c 6
3.b odd 2 1 1944.1.r.b 6
8.d odd 2 1 CM 1944.1.r.c 6
9.c even 3 1 648.1.r.a 6
9.c even 3 1 1944.1.r.d 6
9.d odd 6 1 216.1.r.a 6
9.d odd 6 1 1944.1.r.a 6
24.f even 2 1 1944.1.r.b 6
27.e even 9 1 648.1.r.a 6
27.e even 9 1 inner 1944.1.r.c 6
27.e even 9 1 1944.1.r.d 6
27.f odd 18 1 216.1.r.a 6
27.f odd 18 1 1944.1.r.a 6
27.f odd 18 1 1944.1.r.b 6
36.f odd 6 1 2592.1.bd.a 6
36.h even 6 1 864.1.bd.a 6
72.j odd 6 1 864.1.bd.a 6
72.l even 6 1 216.1.r.a 6
72.l even 6 1 1944.1.r.a 6
72.n even 6 1 2592.1.bd.a 6
72.p odd 6 1 648.1.r.a 6
72.p odd 6 1 1944.1.r.d 6
108.j odd 18 1 2592.1.bd.a 6
108.l even 18 1 864.1.bd.a 6
216.r odd 18 1 648.1.r.a 6
216.r odd 18 1 inner 1944.1.r.c 6
216.r odd 18 1 1944.1.r.d 6
216.t even 18 1 2592.1.bd.a 6
216.v even 18 1 216.1.r.a 6
216.v even 18 1 1944.1.r.a 6
216.v even 18 1 1944.1.r.b 6
216.x odd 18 1 864.1.bd.a 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
216.1.r.a 6 9.d odd 6 1
216.1.r.a 6 27.f odd 18 1
216.1.r.a 6 72.l even 6 1
216.1.r.a 6 216.v even 18 1
648.1.r.a 6 9.c even 3 1
648.1.r.a 6 27.e even 9 1
648.1.r.a 6 72.p odd 6 1
648.1.r.a 6 216.r odd 18 1
864.1.bd.a 6 36.h even 6 1
864.1.bd.a 6 72.j odd 6 1
864.1.bd.a 6 108.l even 18 1
864.1.bd.a 6 216.x odd 18 1
1944.1.r.a 6 9.d odd 6 1
1944.1.r.a 6 27.f odd 18 1
1944.1.r.a 6 72.l even 6 1
1944.1.r.a 6 216.v even 18 1
1944.1.r.b 6 3.b odd 2 1
1944.1.r.b 6 24.f even 2 1
1944.1.r.b 6 27.f odd 18 1
1944.1.r.b 6 216.v even 18 1
1944.1.r.c 6 1.a even 1 1 trivial
1944.1.r.c 6 8.d odd 2 1 CM
1944.1.r.c 6 27.e even 9 1 inner
1944.1.r.c 6 216.r odd 18 1 inner
1944.1.r.d 6 9.c even 3 1
1944.1.r.d 6 27.e even 9 1
1944.1.r.d 6 72.p odd 6 1
1944.1.r.d 6 216.r odd 18 1
2592.1.bd.a 6 36.f odd 6 1
2592.1.bd.a 6 72.n even 6 1
2592.1.bd.a 6 108.j odd 18 1
2592.1.bd.a 6 216.t even 18 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{11}^{6} + 6T_{11}^{5} + 15T_{11}^{4} + 19T_{11}^{3} + 12T_{11}^{2} + 3T_{11} + 1 \) acting on \(S_{1}^{\mathrm{new}}(1944, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

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