Properties

Label 2400.2.bh.a
Level $2400$
Weight $2$
Character orbit 2400.bh
Analytic conductor $19.164$
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] = [2400,2,Mod(943,2400)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2400, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 2, 0, 3]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2400.943");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2400 = 2^{5} \cdot 3 \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2400.bh (of order \(4\), degree \(2\), not 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: \(19.1640964851\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: 16.0.29960650073923649536.7
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 7x^{12} + 40x^{8} - 112x^{4} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{17}]\)
Coefficient ring index: \( 2^{22} \)
Twist minimal: no (minimal twist has level 600)
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.

\(f(q)\) \(=\) \( q - \beta_{8} q^{3} + \beta_{15} q^{7} - \beta_1 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{8} q^{3} + \beta_{15} q^{7} - \beta_1 q^{9} - 2 q^{11} - \beta_{4} q^{13} + ( - \beta_{14} + \beta_{3}) q^{17} + (\beta_{10} + \beta_1) q^{19} + \beta_{5} q^{21} - \beta_{11} q^{23} + \beta_{3} q^{27} + 2 \beta_{12} q^{29} + ( - \beta_{7} - 2 \beta_{5}) q^{31} + 2 \beta_{8} q^{33} + ( - 2 \beta_{15} - \beta_{9}) q^{37} + \beta_{12} q^{39} + 2 \beta_{13} q^{41} + (2 \beta_{8} + 2 \beta_{6}) q^{43} + (\beta_{15} + 2 \beta_{9}) q^{47} + (2 \beta_{10} - 3 \beta_1) q^{49} + (\beta_{13} - 1) q^{51} + 2 \beta_{11} q^{53} + ( - \beta_{14} - \beta_{3}) q^{57} + (2 \beta_{10} - 4 \beta_1) q^{59} - 2 \beta_{7} q^{61} - \beta_{11} q^{63} + (2 \beta_{14} - 6 \beta_{3}) q^{67} - \beta_{2} q^{69} + ( - 2 \beta_{7} + 4 \beta_{5}) q^{71} - 8 \beta_{8} q^{73} - 2 \beta_{15} q^{77} + (3 \beta_{12} + 2 \beta_{2}) q^{79} - q^{81} - 4 \beta_{8} q^{83} + 2 \beta_{9} q^{87} + 2 \beta_{10} q^{89} + (2 \beta_{13} - 2) q^{91} + (2 \beta_{11} + \beta_{4}) q^{93} + (2 \beta_{14} + 6 \beta_{3}) q^{97} + 2 \beta_1 q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 32 q^{11} - 16 q^{51} - 16 q^{81} - 32 q^{91}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 7x^{12} + 40x^{8} - 112x^{4} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{10} - 3\nu^{6} + 12\nu^{2} ) / 16 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{14} - 3\nu^{10} - 4\nu^{6} + 96\nu^{2} ) / 64 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{15} + 3\nu^{11} + 4\nu^{7} + 32\nu^{3} ) / 256 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{9} - 3\nu^{5} + 20\nu ) / 4 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{12} - 5\nu^{8} + 28\nu^{4} - 128 ) / 32 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -3\nu^{13} - 15\nu^{9} + 20\nu^{5} ) / 128 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( \nu^{12} - 3\nu^{8} + 28\nu^{4} - 32 ) / 16 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -3\nu^{13} + 17\nu^{9} - 76\nu^{5} + 128\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( \nu^{15} + \nu^{11} + 16\nu^{7} - 16\nu^{3} ) / 64 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( \nu^{14} - 5\nu^{10} + 34\nu^{6} - 24\nu^{2} ) / 32 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( \nu^{13} - 3\nu^{9} - 4\nu^{5} + 32\nu ) / 32 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( -\nu^{14} + 5\nu^{10} - 18\nu^{6} + 40\nu^{2} ) / 16 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -\nu^{12} + 7\nu^{8} - 24\nu^{4} + 56 ) / 8 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( -5\nu^{15} + 63\nu^{11} - 252\nu^{7} + 864\nu^{3} ) / 256 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( \nu^{15} - 5\nu^{11} + 18\nu^{7} - 8\nu^{3} ) / 32 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{8} + \beta_{6} + \beta_{4} ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{12} + \beta_{10} + 2\beta_{2} - \beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 2\beta_{15} + \beta_{14} - \beta_{9} + 7\beta_{3} ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{13} + 3\beta_{7} + 2\beta_{5} + 7 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -6\beta_{11} - 9\beta_{8} + \beta_{6} + 3\beta_{4} ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 3\beta_{12} + 7\beta_{10} - 2\beta_{2} + \beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 2\beta_{15} - \beta_{14} + 5\beta_{9} + 41\beta_{3} ) / 4 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 7\beta_{13} + 13\beta_{7} - 2\beta_{5} - 31 ) / 4 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -18\beta_{11} - 7\beta_{8} - 17\beta_{6} + 5\beta_{4} ) / 4 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -3\beta_{12} + 9\beta_{10} - 30\beta_{2} + 79\beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( -18\beta_{15} + \beta_{14} + 43\beta_{9} + 23\beta_{3} ) / 4 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( -7\beta_{13} + 19\beta_{7} - 62\beta_{5} - 161 ) / 4 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 50\beta_{11} - 25\beta_{8} - 79\beta_{6} - 5\beta_{4} ) / 4 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( -93\beta_{12} - 41\beta_{10} - 34\beta_{2} + 337\beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 18\beta_{15} + 31\beta_{14} + 117\beta_{9} - 567\beta_{3} ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2400\mathbb{Z}\right)^\times\).

\(n\) \(577\) \(901\) \(1601\) \(1951\)
\(\chi(n)\) \(\beta_{1}\) \(-1\) \(1\) \(-1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
943.1
−1.32968 0.481610i
1.38588 0.281691i
−0.281691 + 1.38588i
−0.481610 1.32968i
0.481610 + 1.32968i
0.281691 1.38588i
−1.38588 + 0.281691i
1.32968 + 0.481610i
−1.32968 + 0.481610i
1.38588 + 0.281691i
−0.281691 1.38588i
−0.481610 + 1.32968i
0.481610 1.32968i
0.281691 + 1.38588i
−1.38588 0.281691i
1.32968 0.481610i
0 −0.707107 0.707107i 0 0 0 −3.02045 3.02045i 0 1.00000i 0
943.2 0 −0.707107 0.707107i 0 0 0 −0.936426 0.936426i 0 1.00000i 0
943.3 0 −0.707107 0.707107i 0 0 0 0.936426 + 0.936426i 0 1.00000i 0
943.4 0 −0.707107 0.707107i 0 0 0 3.02045 + 3.02045i 0 1.00000i 0
943.5 0 0.707107 + 0.707107i 0 0 0 −3.02045 3.02045i 0 1.00000i 0
943.6 0 0.707107 + 0.707107i 0 0 0 −0.936426 0.936426i 0 1.00000i 0
943.7 0 0.707107 + 0.707107i 0 0 0 0.936426 + 0.936426i 0 1.00000i 0
943.8 0 0.707107 + 0.707107i 0 0 0 3.02045 + 3.02045i 0 1.00000i 0
1807.1 0 −0.707107 + 0.707107i 0 0 0 −3.02045 + 3.02045i 0 1.00000i 0
1807.2 0 −0.707107 + 0.707107i 0 0 0 −0.936426 + 0.936426i 0 1.00000i 0
1807.3 0 −0.707107 + 0.707107i 0 0 0 0.936426 0.936426i 0 1.00000i 0
1807.4 0 −0.707107 + 0.707107i 0 0 0 3.02045 3.02045i 0 1.00000i 0
1807.5 0 0.707107 0.707107i 0 0 0 −3.02045 + 3.02045i 0 1.00000i 0
1807.6 0 0.707107 0.707107i 0 0 0 −0.936426 + 0.936426i 0 1.00000i 0
1807.7 0 0.707107 0.707107i 0 0 0 0.936426 0.936426i 0 1.00000i 0
1807.8 0 0.707107 0.707107i 0 0 0 3.02045 3.02045i 0 1.00000i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 943.8
Significant digits:
Format:

Inner twists

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

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2400.2.bh.a 16
4.b odd 2 1 600.2.v.a 16
5.b even 2 1 inner 2400.2.bh.a 16
5.c odd 4 2 inner 2400.2.bh.a 16
8.b even 2 1 600.2.v.a 16
8.d odd 2 1 inner 2400.2.bh.a 16
20.d odd 2 1 600.2.v.a 16
20.e even 4 2 600.2.v.a 16
40.e odd 2 1 inner 2400.2.bh.a 16
40.f even 2 1 600.2.v.a 16
40.i odd 4 2 600.2.v.a 16
40.k even 4 2 inner 2400.2.bh.a 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
600.2.v.a 16 4.b odd 2 1
600.2.v.a 16 8.b even 2 1
600.2.v.a 16 20.d odd 2 1
600.2.v.a 16 20.e even 4 2
600.2.v.a 16 40.f even 2 1
600.2.v.a 16 40.i odd 4 2
2400.2.bh.a 16 1.a even 1 1 trivial
2400.2.bh.a 16 5.b even 2 1 inner
2400.2.bh.a 16 5.c odd 4 2 inner
2400.2.bh.a 16 8.d odd 2 1 inner
2400.2.bh.a 16 40.e odd 2 1 inner
2400.2.bh.a 16 40.k even 4 2 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{8} + 336T_{7}^{4} + 1024 \) acting on \(S_{2}^{\mathrm{new}}(2400, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{4} + 1)^{4} \) Copy content Toggle raw display
$5$ \( T^{16} \) Copy content Toggle raw display
$7$ \( (T^{8} + 336 T^{4} + 1024)^{2} \) Copy content Toggle raw display
$11$ \( (T + 2)^{16} \) Copy content Toggle raw display
$13$ \( (T^{8} + 528 T^{4} + 16384)^{2} \) Copy content Toggle raw display
$17$ \( (T^{8} + 784 T^{4} + 65536)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 36 T^{2} + 256)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} + 336 T^{4} + 1024)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} - 112 T^{2} + 2048)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} + 124 T^{2} + 512)^{4} \) Copy content Toggle raw display
$37$ \( (T^{8} + 4368 T^{4} + 4194304)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} - 68)^{8} \) Copy content Toggle raw display
$43$ \( (T^{8} + 12544 T^{4} + 16777216)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} + 13392 T^{4} + 1024)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} + 5376 T^{4} + 262144)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} + 168 T^{2} + 2704)^{4} \) Copy content Toggle raw display
$61$ \( (T^{4} + 112 T^{2} + 2048)^{4} \) Copy content Toggle raw display
$67$ \( (T^{8} + 41216 T^{4} + 1048576)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 368 T^{2} + 32768)^{4} \) Copy content Toggle raw display
$73$ \( (T^{4} + 4096)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} - 284 T^{2} + 512)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} + 256)^{4} \) Copy content Toggle raw display
$89$ \( (T^{2} + 68)^{8} \) Copy content Toggle raw display
$97$ \( (T^{8} + 41216 T^{4} + 1048576)^{2} \) Copy content Toggle raw display
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