Properties

Label 8.5.d.b
Level 8
Weight 5
Character orbit 8.d
Analytic conductor 0.827
Analytic rank 0
Dimension 2
CM No
Inner twists 2

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Newspace parameters

Level: \( N \) = \( 8 = 2^{3} \)
Weight: \( k \) = \( 5 \)
Character orbit: \([\chi]\) = 8.d (of order \(2\) and degree \(1\))

Newform invariants

Self dual: No
Analytic conductor: \(0.826959704671\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-15}) \)
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 2 \)
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = \sqrt{-15}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( -1 - \beta ) q^{2} + 6 q^{3} + ( -14 + 2 \beta ) q^{4} + 8 \beta q^{5} + ( -6 - 6 \beta ) q^{6} -16 \beta q^{7} + ( 44 + 12 \beta ) q^{8} -45 q^{9} +O(q^{10})\) \( q + ( -1 - \beta ) q^{2} + 6 q^{3} + ( -14 + 2 \beta ) q^{4} + 8 \beta q^{5} + ( -6 - 6 \beta ) q^{6} -16 \beta q^{7} + ( 44 + 12 \beta ) q^{8} -45 q^{9} + ( 120 - 8 \beta ) q^{10} -26 q^{11} + ( -84 + 12 \beta ) q^{12} -8 \beta q^{13} + ( -240 + 16 \beta ) q^{14} + 48 \beta q^{15} + ( 136 - 56 \beta ) q^{16} + 226 q^{17} + ( 45 + 45 \beta ) q^{18} + 134 q^{19} + ( -240 - 112 \beta ) q^{20} -96 \beta q^{21} + ( 26 + 26 \beta ) q^{22} + 80 \beta q^{23} + ( 264 + 72 \beta ) q^{24} -335 q^{25} + ( -120 + 8 \beta ) q^{26} -756 q^{27} + ( 480 + 224 \beta ) q^{28} + 88 \beta q^{29} + ( 720 - 48 \beta ) q^{30} -320 \beta q^{31} + ( -976 - 80 \beta ) q^{32} -156 q^{33} + ( -226 - 226 \beta ) q^{34} + 1920 q^{35} + ( 630 - 90 \beta ) q^{36} + 456 \beta q^{37} + ( -134 - 134 \beta ) q^{38} -48 \beta q^{39} + ( -1440 + 352 \beta ) q^{40} + 994 q^{41} + ( -1440 + 96 \beta ) q^{42} -1882 q^{43} + ( 364 - 52 \beta ) q^{44} -360 \beta q^{45} + ( 1200 - 80 \beta ) q^{46} + 544 \beta q^{47} + ( 816 - 336 \beta ) q^{48} -1439 q^{49} + ( 335 + 335 \beta ) q^{50} + 1356 q^{51} + ( 240 + 112 \beta ) q^{52} -984 \beta q^{53} + ( 756 + 756 \beta ) q^{54} -208 \beta q^{55} + ( 2880 - 704 \beta ) q^{56} + 804 q^{57} + ( 1320 - 88 \beta ) q^{58} -5018 q^{59} + ( -1440 - 672 \beta ) q^{60} + 536 \beta q^{61} + ( -4800 + 320 \beta ) q^{62} + 720 \beta q^{63} + ( -224 + 1056 \beta ) q^{64} + 960 q^{65} + ( 156 + 156 \beta ) q^{66} + 8006 q^{67} + ( -3164 + 452 \beta ) q^{68} + 480 \beta q^{69} + ( -1920 - 1920 \beta ) q^{70} -144 \beta q^{71} + ( -1980 - 540 \beta ) q^{72} + 386 q^{73} + ( 6840 - 456 \beta ) q^{74} -2010 q^{75} + ( -1876 + 268 \beta ) q^{76} + 416 \beta q^{77} + ( -720 + 48 \beta ) q^{78} -2848 \beta q^{79} + ( 6720 + 1088 \beta ) q^{80} -891 q^{81} + ( -994 - 994 \beta ) q^{82} -2234 q^{83} + ( 2880 + 1344 \beta ) q^{84} + 1808 \beta q^{85} + ( 1882 + 1882 \beta ) q^{86} + 528 \beta q^{87} + ( -1144 - 312 \beta ) q^{88} -10046 q^{89} + ( -5400 + 360 \beta ) q^{90} -1920 q^{91} + ( -2400 - 1120 \beta ) q^{92} -1920 \beta q^{93} + ( 8160 - 544 \beta ) q^{94} + 1072 \beta q^{95} + ( -5856 - 480 \beta ) q^{96} + 8738 q^{97} + ( 1439 + 1439 \beta ) q^{98} + 1170 q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2q - 2q^{2} + 12q^{3} - 28q^{4} - 12q^{6} + 88q^{8} - 90q^{9} + O(q^{10}) \) \( 2q - 2q^{2} + 12q^{3} - 28q^{4} - 12q^{6} + 88q^{8} - 90q^{9} + 240q^{10} - 52q^{11} - 168q^{12} - 480q^{14} + 272q^{16} + 452q^{17} + 90q^{18} + 268q^{19} - 480q^{20} + 52q^{22} + 528q^{24} - 670q^{25} - 240q^{26} - 1512q^{27} + 960q^{28} + 1440q^{30} - 1952q^{32} - 312q^{33} - 452q^{34} + 3840q^{35} + 1260q^{36} - 268q^{38} - 2880q^{40} + 1988q^{41} - 2880q^{42} - 3764q^{43} + 728q^{44} + 2400q^{46} + 1632q^{48} - 2878q^{49} + 670q^{50} + 2712q^{51} + 480q^{52} + 1512q^{54} + 5760q^{56} + 1608q^{57} + 2640q^{58} - 10036q^{59} - 2880q^{60} - 9600q^{62} - 448q^{64} + 1920q^{65} + 312q^{66} + 16012q^{67} - 6328q^{68} - 3840q^{70} - 3960q^{72} + 772q^{73} + 13680q^{74} - 4020q^{75} - 3752q^{76} - 1440q^{78} + 13440q^{80} - 1782q^{81} - 1988q^{82} - 4468q^{83} + 5760q^{84} + 3764q^{86} - 2288q^{88} - 20092q^{89} - 10800q^{90} - 3840q^{91} - 4800q^{92} + 16320q^{94} - 11712q^{96} + 17476q^{97} + 2878q^{98} + 2340q^{99} + O(q^{100}) \)

Character Values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/8\mathbb{Z}\right)^\times\).

\(n\) \(5\) \(7\)
\(\chi(n)\) \(-1\) \(-1\)

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.

Label \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
3.1
0.500000 + 1.93649i
0.500000 1.93649i
−1.00000 3.87298i 6.00000 −14.0000 + 7.74597i 30.9839i −6.00000 23.2379i 61.9677i 44.0000 + 46.4758i −45.0000 120.000 30.9839i
3.2 −1.00000 + 3.87298i 6.00000 −14.0000 7.74597i 30.9839i −6.00000 + 23.2379i 61.9677i 44.0000 46.4758i −45.0000 120.000 + 30.9839i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char. orbit Parity Mult. Self Twist Proved
1.a Even 1 trivial yes
8.d Odd 1 yes

Hecke kernels

This newform can be constructed as the kernel of the linear operator \( T_{3} - 6 \) acting on \(S_{5}^{\mathrm{new}}(8, [\chi])\).