Properties

Label 128.4.b.d
Level 128
Weight 4
Character orbit 128.b
Analytic conductor 7.552
Analytic rank 0
Dimension 2
CM no
Inner twists 2

Related objects

Downloads

Learn more about

Newspace parameters

Level: \( N \) \(=\) \( 128 = 2^{7} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 128.b (of order \(2\), degree \(1\), minimal)

Newform invariants

Self dual: no
Analytic conductor: \(7.55224448073\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
Defining polynomial: \(x^{2} + 1\)
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

Coefficients of the \(q\)-expansion are expressed in terms of \(i = \sqrt{-1}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 8 i q^{3} + 12 i q^{5} + 32 q^{7} -37 q^{9} +O(q^{10})\) \( q + 8 i q^{3} + 12 i q^{5} + 32 q^{7} -37 q^{9} + 8 i q^{11} + 20 i q^{13} -96 q^{15} -98 q^{17} -88 i q^{19} + 256 i q^{21} -32 q^{23} -19 q^{25} -80 i q^{27} -172 i q^{29} + 256 q^{31} -64 q^{33} + 384 i q^{35} + 92 i q^{37} -160 q^{39} -102 q^{41} + 296 i q^{43} -444 i q^{45} + 320 q^{47} + 681 q^{49} -784 i q^{51} + 76 i q^{53} -96 q^{55} + 704 q^{57} -408 i q^{59} -636 i q^{61} -1184 q^{63} -240 q^{65} + 552 i q^{67} -256 i q^{69} + 416 q^{71} -138 q^{73} -152 i q^{75} + 256 i q^{77} + 64 q^{79} -359 q^{81} + 392 i q^{83} -1176 i q^{85} + 1376 q^{87} + 582 q^{89} + 640 i q^{91} + 2048 i q^{93} + 1056 q^{95} + 238 q^{97} -296 i q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2q + 64q^{7} - 74q^{9} + O(q^{10}) \) \( 2q + 64q^{7} - 74q^{9} - 192q^{15} - 196q^{17} - 64q^{23} - 38q^{25} + 512q^{31} - 128q^{33} - 320q^{39} - 204q^{41} + 640q^{47} + 1362q^{49} - 192q^{55} + 1408q^{57} - 2368q^{63} - 480q^{65} + 832q^{71} - 276q^{73} + 128q^{79} - 718q^{81} + 2752q^{87} + 1164q^{89} + 2112q^{95} + 476q^{97} + O(q^{100}) \)

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/128\mathbb{Z}\right)^\times\).

\(n\) \(5\) \(127\)
\(\chi(n)\) \(-1\) \(1\)

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 \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
65.1
1.00000i
1.00000i
0 8.00000i 0 12.0000i 0 32.0000 0 −37.0000 0
65.2 0 8.00000i 0 12.0000i 0 32.0000 0 −37.0000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
8.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 128.4.b.d yes 2
3.b odd 2 1 1152.4.d.h 2
4.b odd 2 1 128.4.b.a 2
8.b even 2 1 inner 128.4.b.d yes 2
8.d odd 2 1 128.4.b.a 2
12.b even 2 1 1152.4.d.a 2
16.e even 4 1 256.4.a.c 1
16.e even 4 1 256.4.a.f 1
16.f odd 4 1 256.4.a.b 1
16.f odd 4 1 256.4.a.g 1
24.f even 2 1 1152.4.d.a 2
24.h odd 2 1 1152.4.d.h 2
48.i odd 4 1 2304.4.a.c 1
48.i odd 4 1 2304.4.a.m 1
48.k even 4 1 2304.4.a.d 1
48.k even 4 1 2304.4.a.n 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
128.4.b.a 2 4.b odd 2 1
128.4.b.a 2 8.d odd 2 1
128.4.b.d yes 2 1.a even 1 1 trivial
128.4.b.d yes 2 8.b even 2 1 inner
256.4.a.b 1 16.f odd 4 1
256.4.a.c 1 16.e even 4 1
256.4.a.f 1 16.e even 4 1
256.4.a.g 1 16.f odd 4 1
1152.4.d.a 2 12.b even 2 1
1152.4.d.a 2 24.f even 2 1
1152.4.d.h 2 3.b odd 2 1
1152.4.d.h 2 24.h odd 2 1
2304.4.a.c 1 48.i odd 4 1
2304.4.a.d 1 48.k even 4 1
2304.4.a.m 1 48.i odd 4 1
2304.4.a.n 1 48.k even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(128, [\chi])\):

\( T_{3}^{2} + 64 \)
\( T_{7} - 32 \)

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ 1
$3$ \( 1 + 10 T^{2} + 729 T^{4} \)
$5$ \( 1 - 106 T^{2} + 15625 T^{4} \)
$7$ \( ( 1 - 32 T + 343 T^{2} )^{2} \)
$11$ \( 1 - 2598 T^{2} + 1771561 T^{4} \)
$13$ \( 1 - 3994 T^{2} + 4826809 T^{4} \)
$17$ \( ( 1 + 98 T + 4913 T^{2} )^{2} \)
$19$ \( 1 - 5974 T^{2} + 47045881 T^{4} \)
$23$ \( ( 1 + 32 T + 12167 T^{2} )^{2} \)
$29$ \( 1 - 19194 T^{2} + 594823321 T^{4} \)
$31$ \( ( 1 - 256 T + 29791 T^{2} )^{2} \)
$37$ \( 1 - 92842 T^{2} + 2565726409 T^{4} \)
$41$ \( ( 1 + 102 T + 68921 T^{2} )^{2} \)
$43$ \( 1 - 71398 T^{2} + 6321363049 T^{4} \)
$47$ \( ( 1 - 320 T + 103823 T^{2} )^{2} \)
$53$ \( 1 - 291978 T^{2} + 22164361129 T^{4} \)
$59$ \( 1 - 244294 T^{2} + 42180533641 T^{4} \)
$61$ \( 1 - 49466 T^{2} + 51520374361 T^{4} \)
$67$ \( 1 - 296822 T^{2} + 90458382169 T^{4} \)
$71$ \( ( 1 - 416 T + 357911 T^{2} )^{2} \)
$73$ \( ( 1 + 138 T + 389017 T^{2} )^{2} \)
$79$ \( ( 1 - 64 T + 493039 T^{2} )^{2} \)
$83$ \( 1 - 989910 T^{2} + 326940373369 T^{4} \)
$89$ \( ( 1 - 582 T + 704969 T^{2} )^{2} \)
$97$ \( ( 1 - 238 T + 912673 T^{2} )^{2} \)
show more
show less