Properties

Label 882.2.u.b
Level $882$
Weight $2$
Character orbit 882.u
Analytic conductor $7.043$
Analytic rank $0$
Dimension $6$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [882,2,Mod(127,882)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(882, base_ring=CyclotomicField(14))
 
chi = DirichletCharacter(H, H._module([0, 6]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("882.127");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 882 = 2 \cdot 3^{2} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 882.u (of order \(7\), 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: \(7.04280545828\)
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: no (minimal twist has level 294)
Sato-Tate group: $\mathrm{SU}(2)[C_{7}]$

$q$-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 \(\zeta_{14}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \zeta_{14}^{5} + \zeta_{14}^{4} + \cdots + 1) q^{2}+ \cdots - \zeta_{14}^{4} q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q + ( - \zeta_{14}^{5} + \zeta_{14}^{4} + \cdots + 1) q^{2}+ \cdots - 7 \zeta_{14}^{3} q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + q^{2} - q^{4} - 5 q^{5} + 7 q^{7} + q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 6 q + q^{2} - q^{4} - 5 q^{5} + 7 q^{7} + q^{8} + 5 q^{10} - 4 q^{11} + 13 q^{13} - 7 q^{14} - q^{16} - 9 q^{17} - 18 q^{19} + 2 q^{20} + 4 q^{22} + q^{23} + 8 q^{25} + 8 q^{26} - 23 q^{29} + 28 q^{31} + q^{32} - 5 q^{34} - 18 q^{37} + 11 q^{38} - 2 q^{40} + 20 q^{41} + 25 q^{43} + 3 q^{44} + 13 q^{46} + 28 q^{47} + 7 q^{49} + 20 q^{50} - 8 q^{52} - 22 q^{53} - 6 q^{55} + 7 q^{56} - 5 q^{58} + 38 q^{59} - 15 q^{61} - 7 q^{62} - q^{64} - 19 q^{65} - 60 q^{67} + 12 q^{68} + 14 q^{70} - 6 q^{71} + 17 q^{73} - 10 q^{74} + 10 q^{76} + 14 q^{77} - 42 q^{79} + 2 q^{80} - 20 q^{82} + 18 q^{83} + 11 q^{85} + 24 q^{86} - 3 q^{88} + 20 q^{89} + 35 q^{91} - 13 q^{92} + 28 q^{94} + 29 q^{95} - 7 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/882\mathbb{Z}\right)^\times\).

\(n\) \(199\) \(785\)
\(\chi(n)\) \(-\zeta_{14}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
127.1
0.900969 0.433884i
−0.623490 + 0.781831i
0.222521 0.974928i
0.222521 + 0.974928i
−0.623490 0.781831i
0.900969 + 0.433884i
0.900969 + 0.433884i 0 0.623490 + 0.781831i −0.0990311 0.433884i 0 2.06853 + 1.64960i 0.222521 + 0.974928i 0 0.0990311 0.433884i
253.1 −0.623490 0.781831i 0 −0.222521 + 0.974928i −1.62349 + 0.781831i 0 2.57942 0.588735i 0.900969 0.433884i 0 1.62349 + 0.781831i
379.1 0.222521 + 0.974928i 0 −0.900969 + 0.433884i −0.777479 0.974928i 0 −1.14795 + 2.38374i −0.623490 0.781831i 0 0.777479 0.974928i
505.1 0.222521 0.974928i 0 −0.900969 0.433884i −0.777479 + 0.974928i 0 −1.14795 2.38374i −0.623490 + 0.781831i 0 0.777479 + 0.974928i
631.1 −0.623490 + 0.781831i 0 −0.222521 0.974928i −1.62349 0.781831i 0 2.57942 + 0.588735i 0.900969 + 0.433884i 0 1.62349 0.781831i
757.1 0.900969 0.433884i 0 0.623490 0.781831i −0.0990311 + 0.433884i 0 2.06853 1.64960i 0.222521 0.974928i 0 0.0990311 + 0.433884i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 127.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
49.e even 7 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 882.2.u.b 6
3.b odd 2 1 294.2.i.a 6
49.e even 7 1 inner 882.2.u.b 6
147.l odd 14 1 294.2.i.a 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
294.2.i.a 6 3.b odd 2 1
294.2.i.a 6 147.l odd 14 1
882.2.u.b 6 1.a even 1 1 trivial
882.2.u.b 6 49.e even 7 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{6} + 5T_{5}^{5} + 11T_{5}^{4} + 13T_{5}^{3} + 9T_{5}^{2} + 3T_{5} + 1 \) acting on \(S_{2}^{\mathrm{new}}(882, [\chi])\). 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
$5$ \( T^{6} + 5 T^{5} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( T^{6} - 7 T^{5} + \cdots + 343 \) Copy content Toggle raw display
$11$ \( T^{6} + 4 T^{5} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( T^{6} - 13 T^{5} + \cdots + 169 \) Copy content Toggle raw display
$17$ \( T^{6} + 9 T^{5} + \cdots + 169 \) Copy content Toggle raw display
$19$ \( (T^{3} + 9 T^{2} + 6 T - 29)^{2} \) Copy content Toggle raw display
$23$ \( T^{6} - T^{5} + \cdots + 169 \) Copy content Toggle raw display
$29$ \( T^{6} + 23 T^{5} + \cdots + 28561 \) Copy content Toggle raw display
$31$ \( (T^{3} - 14 T^{2} + \cdots - 49)^{2} \) Copy content Toggle raw display
$37$ \( T^{6} + 18 T^{5} + \cdots + 9409 \) Copy content Toggle raw display
$41$ \( T^{6} - 20 T^{5} + \cdots + 312481 \) Copy content Toggle raw display
$43$ \( T^{6} - 25 T^{5} + \cdots + 63001 \) Copy content Toggle raw display
$47$ \( T^{6} - 28 T^{5} + \cdots + 405769 \) Copy content Toggle raw display
$53$ \( T^{6} + 22 T^{5} + \cdots + 27889 \) Copy content Toggle raw display
$59$ \( T^{6} - 38 T^{5} + \cdots + 452929 \) Copy content Toggle raw display
$61$ \( T^{6} + 15 T^{5} + \cdots + 44521 \) Copy content Toggle raw display
$67$ \( (T^{3} + 30 T^{2} + \cdots + 664)^{2} \) Copy content Toggle raw display
$71$ \( T^{6} + 6 T^{5} + \cdots + 1681 \) Copy content Toggle raw display
$73$ \( T^{6} - 17 T^{5} + \cdots + 841 \) Copy content Toggle raw display
$79$ \( (T^{3} + 21 T^{2} + \cdots + 91)^{2} \) Copy content Toggle raw display
$83$ \( T^{6} - 18 T^{5} + \cdots + 284089 \) Copy content Toggle raw display
$89$ \( T^{6} - 20 T^{5} + \cdots + 841 \) Copy content Toggle raw display
$97$ \( (T^{3} - 49 T + 91)^{2} \) Copy content Toggle raw display
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