Properties

Label 884.1.ct.a
Level $884$
Weight $1$
Character orbit 884.ct
Analytic conductor $0.441$
Analytic rank $0$
Dimension $16$
Projective image $D_{48}$
CM discriminant -4
Inner twists $4$

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Newspace parameters

Level: \( N \) \(=\) \( 884 = 2^{2} \cdot 13 \cdot 17 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 884.ct (of order \(48\), degree \(16\), minimal)

Newform invariants

Self dual: no
Analytic conductor: \(0.441173471168\)
Analytic rank: \(0\)
Dimension: \(16\)
Coefficient field: \(\Q(\zeta_{48})\)
Defining polynomial: \(x^{16} - x^{8} + 1\)
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{48}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{48} - \cdots)\)

$q$-expansion

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q + \zeta_{48}^{17} q^{2} -\zeta_{48}^{10} q^{4} + ( \zeta_{48}^{2} - \zeta_{48}^{19} ) q^{5} + \zeta_{48}^{3} q^{8} + \zeta_{48}^{13} q^{9} +O(q^{10})\) \( q + \zeta_{48}^{17} q^{2} -\zeta_{48}^{10} q^{4} + ( \zeta_{48}^{2} - \zeta_{48}^{19} ) q^{5} + \zeta_{48}^{3} q^{8} + \zeta_{48}^{13} q^{9} + ( \zeta_{48}^{12} + \zeta_{48}^{19} ) q^{10} + \zeta_{48}^{23} q^{13} + \zeta_{48}^{20} q^{16} -\zeta_{48}^{18} q^{17} -\zeta_{48}^{6} q^{18} + ( -\zeta_{48}^{5} - \zeta_{48}^{12} ) q^{20} + ( \zeta_{48}^{4} - \zeta_{48}^{14} - \zeta_{48}^{21} ) q^{25} -\zeta_{48}^{16} q^{26} + ( -1 + \zeta_{48} ) q^{29} -\zeta_{48}^{13} q^{32} + \zeta_{48}^{11} q^{34} -\zeta_{48}^{23} q^{36} + ( \zeta_{48}^{10} - \zeta_{48}^{15} ) q^{37} + ( \zeta_{48}^{5} - \zeta_{48}^{22} ) q^{40} + ( -\zeta_{48}^{3} + \zeta_{48}^{16} ) q^{41} + ( \zeta_{48}^{8} + \zeta_{48}^{15} ) q^{45} -\zeta_{48}^{11} q^{49} + ( \zeta_{48}^{7} + \zeta_{48}^{14} + \zeta_{48}^{21} ) q^{50} + \zeta_{48}^{9} q^{52} + ( -\zeta_{48}^{8} + \zeta_{48}^{22} ) q^{53} + ( -\zeta_{48}^{17} + \zeta_{48}^{18} ) q^{58} + ( \zeta_{48}^{9} + \zeta_{48}^{14} ) q^{61} + \zeta_{48}^{6} q^{64} + ( -\zeta_{48} + \zeta_{48}^{18} ) q^{65} -\zeta_{48}^{4} q^{68} + \zeta_{48}^{16} q^{72} + ( -\zeta_{48}^{4} - \zeta_{48}^{17} ) q^{73} + ( -\zeta_{48}^{3} + \zeta_{48}^{8} ) q^{74} + ( \zeta_{48}^{15} + \zeta_{48}^{22} ) q^{80} -\zeta_{48}^{2} q^{81} + ( -\zeta_{48}^{9} - \zeta_{48}^{20} ) q^{82} + ( -\zeta_{48}^{13} - \zeta_{48}^{20} ) q^{85} + ( \zeta_{48}^{5} + \zeta_{48}^{11} ) q^{89} + ( -\zeta_{48} - \zeta_{48}^{8} ) q^{90} + ( \zeta_{48}^{7} - \zeta_{48}^{22} ) q^{97} + \zeta_{48}^{4} q^{98} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16q + O(q^{10}) \) \( 16q + 8q^{26} - 16q^{29} - 8q^{41} + 8q^{45} - 8q^{53} - 8q^{72} + 8q^{74} - 8q^{90} + O(q^{100}) \)

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/884\mathbb{Z}\right)^\times\).

\(n\) \(105\) \(443\) \(613\)
\(\chi(n)\) \(-\zeta_{48}^{21}\) \(-1\) \(-\zeta_{48}^{4}\)

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.

Label \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
7.1
0.793353 + 0.608761i
−0.991445 0.130526i
0.991445 0.130526i
−0.793353 0.608761i
0.130526 + 0.991445i
0.608761 0.793353i
−0.608761 0.793353i
0.793353 0.608761i
−0.130526 0.991445i
0.991445 + 0.130526i
−0.991445 + 0.130526i
0.130526 0.991445i
−0.793353 + 0.608761i
−0.608761 + 0.793353i
−0.130526 + 0.991445i
0.608761 + 0.793353i
0.130526 0.991445i 0 −0.965926 0.258819i −0.732626 + 1.09645i 0 0 −0.382683 + 0.923880i −0.608761 + 0.793353i 0.991445 + 0.869474i
11.1 0.608761 0.793353i 0 −0.258819 0.965926i 0.172572 + 0.867580i 0 0 −0.923880 0.382683i 0.130526 0.991445i 0.793353 + 0.391239i
71.1 −0.608761 0.793353i 0 −0.258819 + 0.965926i 1.75928 + 0.349942i 0 0 0.923880 0.382683i −0.130526 0.991445i −0.793353 1.60876i
163.1 −0.130526 + 0.991445i 0 −0.965926 0.258819i 1.25026 + 0.835400i 0 0 0.382683 0.923880i 0.608761 0.793353i −0.991445 + 1.13053i
175.1 0.793353 0.608761i 0 0.258819 0.965926i −0.357164 0.534534i 0 0 −0.382683 0.923880i 0.991445 0.130526i −0.608761 0.206647i
215.1 −0.991445 0.130526i 0 0.965926 + 0.258819i −0.389345 1.95737i 0 0 −0.923880 0.382683i 0.793353 + 0.608761i 0.130526 + 1.99144i
275.1 0.991445 0.130526i 0 0.965926 0.258819i −0.128293 0.0255190i 0 0 0.923880 0.382683i −0.793353 + 0.608761i −0.130526 0.00855514i
379.1 0.130526 + 0.991445i 0 −0.965926 + 0.258819i −0.732626 1.09645i 0 0 −0.382683 0.923880i −0.608761 0.793353i 0.991445 0.869474i
539.1 −0.793353 + 0.608761i 0 0.258819 0.965926i −1.57469 + 1.05217i 0 0 0.382683 + 0.923880i −0.991445 + 0.130526i 0.608761 1.79335i
635.1 −0.608761 + 0.793353i 0 −0.258819 0.965926i 1.75928 0.349942i 0 0 0.923880 + 0.382683i −0.130526 + 0.991445i −0.793353 + 1.60876i
643.1 0.608761 + 0.793353i 0 −0.258819 + 0.965926i 0.172572 0.867580i 0 0 −0.923880 + 0.382683i 0.130526 + 0.991445i 0.793353 0.391239i
687.1 0.793353 + 0.608761i 0 0.258819 + 0.965926i −0.357164 + 0.534534i 0 0 −0.382683 + 0.923880i 0.991445 + 0.130526i −0.608761 + 0.206647i
743.1 −0.130526 0.991445i 0 −0.965926 + 0.258819i 1.25026 0.835400i 0 0 0.382683 + 0.923880i 0.608761 + 0.793353i −0.991445 1.13053i
839.1 0.991445 + 0.130526i 0 0.965926 + 0.258819i −0.128293 + 0.0255190i 0 0 0.923880 + 0.382683i −0.793353 0.608761i −0.130526 + 0.00855514i
843.1 −0.793353 0.608761i 0 0.258819 + 0.965926i −1.57469 1.05217i 0 0 0.382683 0.923880i −0.991445 0.130526i 0.608761 + 1.79335i
847.1 −0.991445 + 0.130526i 0 0.965926 0.258819i −0.389345 + 1.95737i 0 0 −0.923880 + 0.382683i 0.793353 0.608761i 0.130526 1.99144i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 847.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 CM by \(\Q(\sqrt{-1}) \)
221.bi even 48 1 inner
884.ct odd 48 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 884.1.ct.a yes 16
4.b odd 2 1 CM 884.1.ct.a yes 16
13.f odd 12 1 884.1.cn.a 16
17.e odd 16 1 884.1.cn.a 16
52.l even 12 1 884.1.cn.a 16
68.i even 16 1 884.1.cn.a 16
221.bi even 48 1 inner 884.1.ct.a yes 16
884.ct odd 48 1 inner 884.1.ct.a yes 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
884.1.cn.a 16 13.f odd 12 1
884.1.cn.a 16 17.e odd 16 1
884.1.cn.a 16 52.l even 12 1
884.1.cn.a 16 68.i even 16 1
884.1.ct.a yes 16 1.a even 1 1 trivial
884.1.ct.a yes 16 4.b odd 2 1 CM
884.1.ct.a yes 16 221.bi even 48 1 inner
884.1.ct.a yes 16 884.ct odd 48 1 inner

Hecke kernels

This newform subspace is the entire newspace \(S_{1}^{\mathrm{new}}(884, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( 1 - T^{8} + T^{16} \)
$3$ \( T^{16} \)
$5$ \( 1 + 16 T + 76 T^{2} + 96 T^{3} + 146 T^{4} + 24 T^{5} + 112 T^{6} - 96 T^{7} + 2 T^{8} - 32 T^{9} + 52 T^{10} - 2 T^{12} - 8 T^{13} + T^{16} \)
$7$ \( T^{16} \)
$11$ \( T^{16} \)
$13$ \( 1 - T^{8} + T^{16} \)
$17$ \( ( 1 + T^{4} )^{4} \)
$19$ \( T^{16} \)
$23$ \( T^{16} \)
$29$ \( 1 + 8 T + 92 T^{2} + 504 T^{3} + 1750 T^{4} + 4312 T^{5} + 7980 T^{6} + 11432 T^{7} + 12869 T^{8} + 11440 T^{9} + 8008 T^{10} + 4368 T^{11} + 1820 T^{12} + 560 T^{13} + 120 T^{14} + 16 T^{15} + T^{16} \)
$31$ \( T^{16} \)
$37$ \( 1 - 8 T + 76 T^{2} - 192 T^{3} + 140 T^{4} + 40 T^{6} - 96 T^{7} + 5 T^{8} + 40 T^{9} + 52 T^{10} - 2 T^{12} - 8 T^{13} + T^{16} \)
$41$ \( 1 + 16 T + 92 T^{2} + 168 T^{3} + 196 T^{4} + 392 T^{5} + 756 T^{6} + 1024 T^{7} + 1109 T^{8} + 1016 T^{9} + 784 T^{10} + 504 T^{11} + 266 T^{12} + 112 T^{13} + 36 T^{14} + 8 T^{15} + T^{16} \)
$43$ \( T^{16} \)
$47$ \( T^{16} \)
$53$ \( ( 1 + 8 T + 22 T^{2} + 20 T^{3} + 18 T^{4} + 16 T^{5} + 10 T^{6} + 4 T^{7} + T^{8} )^{2} \)
$59$ \( T^{16} \)
$61$ \( 1 + 8 T + 76 T^{2} + 192 T^{3} + 140 T^{4} + 40 T^{6} + 96 T^{7} + 5 T^{8} - 40 T^{9} + 52 T^{10} - 2 T^{12} + 8 T^{13} + T^{16} \)
$67$ \( T^{16} \)
$71$ \( T^{16} \)
$73$ \( 1 + 8 T + 56 T^{2} - 16 T^{3} + 86 T^{4} - 112 T^{5} + 44 T^{6} + 112 T^{7} + 18 T^{8} + 24 T^{9} - 16 T^{10} - 16 T^{11} + 10 T^{12} - 4 T^{14} + T^{16} \)
$79$ \( T^{16} \)
$83$ \( T^{16} \)
$89$ \( ( 4 + 8 T^{2} + 14 T^{4} + 4 T^{6} + T^{8} )^{2} \)
$97$ \( 4 - 16 T + 24 T^{2} - 96 T^{3} + 268 T^{4} - 288 T^{5} + 216 T^{6} - 32 T^{7} + 2 T^{8} - 8 T^{9} + 40 T^{10} - 16 T^{11} - 2 T^{12} + T^{16} \)
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