Properties

Label 1624.1.cf.b
Level $1624$
Weight $1$
Character orbit 1624.cf
Analytic conductor $0.810$
Analytic rank $0$
Dimension $6$
Projective image $D_{14}$
CM discriminant -7
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1624,1,Mod(13,1624)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1624, base_ring=CyclotomicField(14))
 
chi = DirichletCharacter(H, H._module([0, 7, 7, 9]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1624.13");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1624 = 2^{3} \cdot 7 \cdot 29 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1624.cf (of order \(14\), 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: \(0.810481580516\)
Analytic rank: \(0\)
Dimension: \(6\)
Coefficient field: \(\Q(\zeta_{14})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - x^{5} + x^{4} - x^{3} + x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{14}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{14} - \cdots)\)

$q$-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.

\(f(q)\) \(=\) \( q + \zeta_{14} q^{2} + \zeta_{14}^{2} q^{4} + \zeta_{14}^{4} q^{7} + \zeta_{14}^{3} q^{8} - \zeta_{14} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{14} q^{2} + \zeta_{14}^{2} q^{4} + \zeta_{14}^{4} q^{7} + \zeta_{14}^{3} q^{8} - \zeta_{14} q^{9} + ( - \zeta_{14}^{5} + 1) q^{11} + \zeta_{14}^{5} q^{14} + \zeta_{14}^{4} q^{16} - \zeta_{14}^{2} q^{18} + ( - \zeta_{14}^{6} + \zeta_{14}) q^{22} + ( - \zeta_{14}^{6} + \zeta_{14}^{5}) q^{23} + \zeta_{14}^{3} q^{25} + \zeta_{14}^{6} q^{28} + \zeta_{14}^{3} q^{29} + \zeta_{14}^{5} q^{32} - \zeta_{14}^{3} q^{36} + (\zeta_{14}^{6} - \zeta_{14}^{3}) q^{37} - \zeta_{14}^{2} q^{43} + (\zeta_{14}^{2} + 1) q^{44} + (\zeta_{14}^{6} + 1) q^{46} - \zeta_{14} q^{49} + \zeta_{14}^{4} q^{50} + (\zeta_{14}^{6} - \zeta_{14}^{4}) q^{53} - q^{56} + \zeta_{14}^{4} q^{58} - \zeta_{14}^{5} q^{63} + \zeta_{14}^{6} q^{64} + ( - \zeta_{14}^{5} - \zeta_{14}^{4}) q^{67} + ( - \zeta_{14}^{4} + \zeta_{14}) q^{71} - \zeta_{14}^{4} q^{72} + ( - \zeta_{14}^{4} - 1) q^{74} + (\zeta_{14}^{4} + \zeta_{14}^{2}) q^{77} + ( - \zeta_{14}^{2} + 1) q^{79} + \zeta_{14}^{2} q^{81} - 2 \zeta_{14}^{3} q^{86} + (\zeta_{14}^{3} + \zeta_{14}) q^{88} + (\zeta_{14} - 1) q^{92} - \zeta_{14}^{2} q^{98} + (\zeta_{14}^{6} - \zeta_{14}) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + q^{2} - q^{4} - q^{7} + q^{8} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 6 q + q^{2} - q^{4} - q^{7} + q^{8} - q^{9} + 5 q^{11} + q^{14} - q^{16} + q^{18} + 2 q^{22} + 2 q^{23} + q^{25} - q^{28} + q^{29} + q^{32} - q^{36} - 2 q^{37} + 2 q^{43} + 5 q^{44} + 5 q^{46} - q^{49} - q^{50} - 6 q^{56} - q^{58} - q^{63} - q^{64} + 2 q^{71} + q^{72} - 5 q^{74} - 2 q^{77} + 7 q^{79} - q^{81} - 2 q^{86} + 2 q^{88} - 5 q^{92} + q^{98} - 2 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1624\mathbb{Z}\right)^\times\).

\(n\) \(407\) \(465\) \(785\) \(813\)
\(\chi(n)\) \(1\) \(-1\) \(\zeta_{14}^{3}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
13.1
0.222521 + 0.974928i
0.222521 0.974928i
0.900969 0.433884i
−0.623490 0.781831i
0.900969 + 0.433884i
−0.623490 + 0.781831i
0.222521 + 0.974928i 0 −0.900969 + 0.433884i 0 0 0.623490 0.781831i −0.623490 0.781831i −0.222521 0.974928i 0
125.1 0.222521 0.974928i 0 −0.900969 0.433884i 0 0 0.623490 + 0.781831i −0.623490 + 0.781831i −0.222521 + 0.974928i 0
237.1 0.900969 0.433884i 0 0.623490 0.781831i 0 0 −0.222521 0.974928i 0.222521 0.974928i −0.900969 + 0.433884i 0
573.1 −0.623490 0.781831i 0 −0.222521 + 0.974928i 0 0 −0.900969 0.433884i 0.900969 0.433884i 0.623490 + 0.781831i 0
1021.1 0.900969 + 0.433884i 0 0.623490 + 0.781831i 0 0 −0.222521 + 0.974928i 0.222521 + 0.974928i −0.900969 0.433884i 0
1077.1 −0.623490 + 0.781831i 0 −0.222521 0.974928i 0 0 −0.900969 + 0.433884i 0.900969 + 0.433884i 0.623490 0.781831i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 13.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.b odd 2 1 CM by \(\Q(\sqrt{-7}) \)
232.o even 14 1 inner
1624.cf odd 14 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1624.1.cf.b yes 6
7.b odd 2 1 CM 1624.1.cf.b yes 6
8.b even 2 1 1624.1.cf.a 6
29.e even 14 1 1624.1.cf.a 6
56.h odd 2 1 1624.1.cf.a 6
203.o odd 14 1 1624.1.cf.a 6
232.o even 14 1 inner 1624.1.cf.b yes 6
1624.cf odd 14 1 inner 1624.1.cf.b yes 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1624.1.cf.a 6 8.b even 2 1
1624.1.cf.a 6 29.e even 14 1
1624.1.cf.a 6 56.h odd 2 1
1624.1.cf.a 6 203.o odd 14 1
1624.1.cf.b yes 6 1.a even 1 1 trivial
1624.1.cf.b yes 6 7.b odd 2 1 CM
1624.1.cf.b yes 6 232.o even 14 1 inner
1624.1.cf.b yes 6 1624.cf odd 14 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{11}^{6} - 5T_{11}^{5} + 11T_{11}^{4} - 13T_{11}^{3} + 9T_{11}^{2} - 3T_{11} + 1 \) acting on \(S_{1}^{\mathrm{new}}(1624, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{6} - T^{5} + T^{4} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{6} \) Copy content Toggle raw display
$5$ \( T^{6} \) Copy content Toggle raw display
$7$ \( T^{6} + T^{5} + T^{4} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{6} - 5 T^{5} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( T^{6} \) Copy content Toggle raw display
$17$ \( T^{6} \) Copy content Toggle raw display
$19$ \( T^{6} \) Copy content Toggle raw display
$23$ \( T^{6} - 2 T^{5} + \cdots + 1 \) Copy content Toggle raw display
$29$ \( T^{6} - T^{5} + T^{4} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{6} \) Copy content Toggle raw display
$37$ \( T^{6} + 2 T^{5} + \cdots + 1 \) Copy content Toggle raw display
$41$ \( T^{6} \) Copy content Toggle raw display
$43$ \( T^{6} - 2 T^{5} + \cdots + 64 \) Copy content Toggle raw display
$47$ \( T^{6} \) Copy content Toggle raw display
$53$ \( T^{6} - 7 T^{3} + \cdots + 7 \) Copy content Toggle raw display
$59$ \( T^{6} \) Copy content Toggle raw display
$61$ \( T^{6} \) Copy content Toggle raw display
$67$ \( T^{6} + 7 T^{3} + \cdots + 7 \) Copy content Toggle raw display
$71$ \( T^{6} - 2 T^{5} + \cdots + 1 \) Copy content Toggle raw display
$73$ \( T^{6} \) Copy content Toggle raw display
$79$ \( T^{6} - 7 T^{5} + \cdots + 7 \) 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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