Properties

Label 400.4.n.g
Level $400$
Weight $4$
Character orbit 400.n
Analytic conductor $23.601$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [400,4,Mod(143,400)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(400, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 0, 3]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("400.143");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 400 = 2^{4} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 400.n (of order \(4\), degree \(2\), 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: \(23.6007640023\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: 16.0.11007531417600000000.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 7x^{12} + 48x^{8} - 7x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{36}\cdot 3^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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 basis \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{8} q^{3} + (2 \beta_{9} + \beta_{6}) q^{7} + (\beta_{13} - 22 \beta_{3}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{8} q^{3} + (2 \beta_{9} + \beta_{6}) q^{7} + (\beta_{13} - 22 \beta_{3}) q^{9} + (\beta_{11} - 4 \beta_{7}) q^{11} + (\beta_{15} + 14 \beta_{4}) q^{13} + ( - 5 \beta_{14} + 11 \beta_{2}) q^{17} + ( - 9 \beta_{10} + 14 \beta_{5}) q^{19} + (3 \beta_{12} - 116) q^{21} + ( - 6 \beta_{8} + 14 \beta_1) q^{23} + (13 \beta_{9} + 31 \beta_{6}) q^{27} + (3 \beta_{13} - 54 \beta_{3}) q^{29} + (10 \beta_{11} - 54 \beta_{7}) q^{31} + ( - 2 \beta_{15} + 19 \beta_{4}) q^{33} + (3 \beta_{14} - 120 \beta_{2}) q^{37} + (20 \beta_{10} - 71 \beta_{5}) q^{39} + ( - 4 \beta_{12} - 123) q^{41} + (38 \beta_{8} + 41 \beta_1) q^{43} + ( - 24 \beta_{9} + 79 \beta_{6}) q^{47} + ( - 8 \beta_{13} - 39 \beta_{3}) q^{49} + ( - 41 \beta_{11} - 196 \beta_{7}) q^{51} + (2 \beta_{15} + 242 \beta_{4}) q^{53} + (23 \beta_{14} - 417 \beta_{2}) q^{57} + ( - 12 \beta_{10} + 9 \beta_{5}) q^{59} + ( - 13 \beta_{12} - 124) q^{61} + ( - 116 \beta_{8} + 66 \beta_1) q^{63} + ( - 83 \beta_{9} + 113 \beta_{6}) q^{67} + ( - 20 \beta_{13} + 546 \beta_{3}) q^{69} + (40 \beta_{11} - 133 \beta_{7}) q^{71} + ( - \beta_{15} - 103 \beta_{4}) q^{73} + (\beta_{14} - 4 \beta_{2}) q^{77} + (50 \beta_{10} - 165 \beta_{5}) q^{79} + (17 \beta_{12} - 601) q^{81} + (129 \beta_{8} + 83 \beta_1) q^{83} + (108 \beta_{9} + 93 \beta_{6}) q^{87} + (19 \beta_{13} - 813 \beta_{3}) q^{89} + ( - 52 \beta_{11} - 138 \beta_{7}) q^{91} + ( - 34 \beta_{15} + 106 \beta_{4}) q^{93} + ( - 20 \beta_{14} - 252 \beta_{2}) q^{97} + ( - 20 \beta_{10} - 33 \beta_{5}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 1856 q^{21} - 1968 q^{41} - 1984 q^{61} - 9616 q^{81}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 7x^{12} + 48x^{8} - 7x^{4} + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{15} - 305\nu^{3} ) / 12 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 3\nu^{13} - 20\nu^{9} + 136\nu^{5} + 19\nu ) / 12 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -7\nu^{14} + 48\nu^{10} - 330\nu^{6} + \nu^{2} ) / 18 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -15\nu^{15} + 104\nu^{11} - 712\nu^{7} + 53\nu^{3} ) / 12 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 9\nu^{14} - 64\nu^{10} + 440\nu^{6} - 127\nu^{2} ) / 12 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 17\nu^{13} - 120\nu^{9} + 816\nu^{5} - 119\nu ) / 12 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -7\nu^{12} + 48\nu^{8} - 336\nu^{4} + 25 ) / 12 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 3\nu^{15} - 126\nu^{14} - 2\nu^{12} + 864\nu^{10} - 5904\nu^{6} + 915\nu^{3} + 18\nu^{2} - 322 ) / 72 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( - 126 \nu^{14} + 51 \nu^{13} + 2 \nu^{12} + 864 \nu^{10} - 360 \nu^{9} - 5904 \nu^{6} + 2448 \nu^{5} + \cdots + 322 ) / 72 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 134 \nu^{15} + 9 \nu^{14} - 26 \nu^{13} - 928 \nu^{11} - 64 \nu^{10} + 176 \nu^{9} + 6368 \nu^{7} + \cdots - 170 \nu ) / 24 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 134 \nu^{15} + 26 \nu^{13} - 7 \nu^{12} - 928 \nu^{11} - 176 \nu^{9} + 48 \nu^{8} + 6368 \nu^{7} + \cdots + 25 ) / 24 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( \nu^{15} - 19\nu^{13} + 132\nu^{9} - 912\nu^{5} + 341\nu^{3} + 133\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -\nu^{15} - 19\nu^{13} + 132\nu^{9} - 912\nu^{5} - 341\nu^{3} + 133\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( -10\nu^{14} + 8\nu^{12} + 72\nu^{10} - 56\nu^{8} - 492\nu^{6} + 376\nu^{4} + 142\nu^{2} - 28 ) / 3 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 10\nu^{14} + 8\nu^{12} - 72\nu^{10} - 56\nu^{8} + 492\nu^{6} + 376\nu^{4} - 142\nu^{2} - 28 ) / 3 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{13} + \beta_{12} + 6\beta_{11} - 6\beta_{10} - 3\beta_{7} + 4\beta_{6} + 3\beta_{5} - 24\beta_{2} ) / 96 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{15} - \beta_{14} + 2\beta_{9} + 2\beta_{8} - \beta_{6} - 12\beta_{5} - 24\beta_{3} + \beta_1 ) / 32 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -\beta_{13} + \beta_{12} + 8\beta_1 ) / 24 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -3\beta_{15} - 3\beta_{14} - 6\beta_{9} + 6\beta_{8} - 28\beta_{7} + 3\beta_{6} + 3\beta _1 + 56 ) / 32 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 5 \beta_{13} - 5 \beta_{12} + 30 \beta_{11} - 30 \beta_{10} - 15 \beta_{7} - 44 \beta_{6} + \cdots - 264 \beta_{2} ) / 96 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 2\beta_{9} + 2\beta_{8} - \beta_{6} - 18\beta_{3} + \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 13 \beta_{13} + 13 \beta_{12} + 78 \beta_{11} + 78 \beta_{10} - 39 \beta_{7} - 39 \beta_{5} + \cdots + 116 \beta_1 ) / 96 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( -21\beta_{15} - 21\beta_{14} + 42\beta_{9} - 42\beta_{8} - 188\beta_{7} - 21\beta_{6} - 21\beta _1 - 376 ) / 32 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -17\beta_{13} - 17\beta_{12} - 152\beta_{6} ) / 24 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( - 55 \beta_{15} + 55 \beta_{14} + 110 \beta_{9} + 110 \beta_{8} - 55 \beta_{6} + 492 \beta_{5} + \cdots + 55 \beta_1 ) / 32 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 89 \beta_{13} - 89 \beta_{12} + 534 \beta_{11} + 534 \beta_{10} - 267 \beta_{7} - 267 \beta_{5} + \cdots - 796 \beta_1 ) / 96 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( 18\beta_{9} - 18\beta_{8} - 9\beta_{6} - 9\beta _1 - 161 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 233 \beta_{13} - 233 \beta_{12} - 1398 \beta_{11} + 1398 \beta_{10} + 699 \beta_{7} + \cdots + 12504 \beta_{2} ) / 96 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 377 \beta_{15} + 377 \beta_{14} - 754 \beta_{9} - 754 \beta_{8} + 377 \beta_{6} + 3372 \beta_{5} + \cdots - 377 \beta_1 ) / 32 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 305\beta_{13} - 305\beta_{12} - 2728\beta_1 ) / 24 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/400\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(177\) \(351\)
\(\chi(n)\) \(1\) \(-\beta_{3}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
143.1
−0.596975 + 0.159959i
0.159959 0.596975i
0.596975 0.159959i
−0.159959 + 0.596975i
1.56290 0.418778i
−0.418778 + 1.56290i
−1.56290 + 0.418778i
0.418778 1.56290i
0.159959 + 0.596975i
−0.596975 0.159959i
−0.159959 0.596975i
0.596975 + 0.159959i
−0.418778 1.56290i
1.56290 + 0.418778i
0.418778 + 1.56290i
−1.56290 0.418778i
0 −6.59346 + 6.59346i 0 0 0 17.4296 + 17.4296i 0 59.9473i 0
143.2 0 −6.59346 + 6.59346i 0 0 0 17.4296 + 17.4296i 0 59.9473i 0
143.3 0 −2.35082 + 2.35082i 0 0 0 0.458991 + 0.458991i 0 15.9473i 0
143.4 0 −2.35082 + 2.35082i 0 0 0 0.458991 + 0.458991i 0 15.9473i 0
143.5 0 2.35082 2.35082i 0 0 0 −0.458991 0.458991i 0 15.9473i 0
143.6 0 2.35082 2.35082i 0 0 0 −0.458991 0.458991i 0 15.9473i 0
143.7 0 6.59346 6.59346i 0 0 0 −17.4296 17.4296i 0 59.9473i 0
143.8 0 6.59346 6.59346i 0 0 0 −17.4296 17.4296i 0 59.9473i 0
207.1 0 −6.59346 6.59346i 0 0 0 17.4296 17.4296i 0 59.9473i 0
207.2 0 −6.59346 6.59346i 0 0 0 17.4296 17.4296i 0 59.9473i 0
207.3 0 −2.35082 2.35082i 0 0 0 0.458991 0.458991i 0 15.9473i 0
207.4 0 −2.35082 2.35082i 0 0 0 0.458991 0.458991i 0 15.9473i 0
207.5 0 2.35082 + 2.35082i 0 0 0 −0.458991 + 0.458991i 0 15.9473i 0
207.6 0 2.35082 + 2.35082i 0 0 0 −0.458991 + 0.458991i 0 15.9473i 0
207.7 0 6.59346 + 6.59346i 0 0 0 −17.4296 + 17.4296i 0 59.9473i 0
207.8 0 6.59346 + 6.59346i 0 0 0 −17.4296 + 17.4296i 0 59.9473i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 143.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
5.b even 2 1 inner
5.c odd 4 2 inner
20.d odd 2 1 inner
20.e even 4 2 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 400.4.n.g 16
4.b odd 2 1 inner 400.4.n.g 16
5.b even 2 1 inner 400.4.n.g 16
5.c odd 4 2 inner 400.4.n.g 16
20.d odd 2 1 inner 400.4.n.g 16
20.e even 4 2 inner 400.4.n.g 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
400.4.n.g 16 1.a even 1 1 trivial
400.4.n.g 16 4.b odd 2 1 inner
400.4.n.g 16 5.b even 2 1 inner
400.4.n.g 16 5.c odd 4 2 inner
400.4.n.g 16 20.d odd 2 1 inner
400.4.n.g 16 20.e even 4 2 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{8} + 7682T_{3}^{4} + 923521 \) acting on \(S_{4}^{\mathrm{new}}(400, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} + 7682 T^{4} + 923521)^{2} \) Copy content Toggle raw display
$5$ \( T^{16} \) Copy content Toggle raw display
$7$ \( (T^{8} + 369152 T^{4} + 65536)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} + 534 T^{2} + 729)^{4} \) Copy content Toggle raw display
$13$ \( (T^{8} + 4539168 T^{4} + 136048896)^{2} \) Copy content Toggle raw display
$17$ \( (T^{8} + \cdots + 18\!\cdots\!61)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 21606 T^{2} + 74597769)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} + \cdots + 64\!\cdots\!16)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + 31752 T^{2} + 100881936)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} + 81624 T^{2} + 282643344)^{4} \) Copy content Toggle raw display
$37$ \( (T^{8} + \cdots + 22\!\cdots\!00)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} + 246 T - 7911)^{8} \) Copy content Toggle raw display
$43$ \( (T^{8} + \cdots + 26\!\cdots\!16)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} + \cdots + 36\!\cdots\!16)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} + \cdots + 91\!\cdots\!56)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 34776 T^{2} + 294877584)^{4} \) Copy content Toggle raw display
$61$ \( (T^{2} + 248 T - 227984)^{8} \) Copy content Toggle raw display
$67$ \( (T^{8} + \cdots + 70\!\cdots\!21)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 690456 T^{2} + 1503267984)^{4} \) Copy content Toggle raw display
$73$ \( (T^{8} + \cdots + 96\!\cdots\!81)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} - 1070400 T^{2} + 4199040000)^{4} \) Copy content Toggle raw display
$83$ \( (T^{8} + \cdots + 18\!\cdots\!21)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 2361618 T^{2} + 19917394641)^{4} \) Copy content Toggle raw display
$97$ \( (T^{8} + \cdots + 4902433652736)^{2} \) Copy content Toggle raw display
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