Properties

Label 900.2.z.a
Level $900$
Weight $2$
Character orbit 900.z
Analytic conductor $7.187$
Analytic rank $0$
Dimension $16$
CM discriminant -4
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [900,2,Mod(179,900)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(900, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([5, 5, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("900.179");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 900 = 2^{2} \cdot 3^{2} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 900.z (of order \(10\), degree \(4\), 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: \(7.18653618192\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(4\) over \(\Q(\zeta_{10})\)
Coefficient field: \(\Q(\zeta_{40})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - x^{12} + x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 3^{8} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{10}]$

$q$-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.

\(f(q)\) \(=\) \( q + \beta_{11} q^{2} - 2 \beta_{7} q^{4} + ( - \beta_{12} + \beta_{8}) q^{5} - 2 \beta_{8} q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{11} q^{2} - 2 \beta_{7} q^{4} + ( - \beta_{12} + \beta_{8}) q^{5} - 2 \beta_{8} q^{8} + (\beta_{9} + \beta_{2}) q^{10} + ( - 4 \beta_{7} + 2 \beta_{4} + \cdots + 2) q^{13}+ \cdots - 7 \beta_{11} q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 8 q^{4}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 8 q^{4} + 4 q^{10} - 16 q^{16} + 16 q^{25} - 60 q^{34} - 20 q^{37} + 8 q^{40} - 112 q^{49} - 40 q^{61} - 32 q^{64} + 120 q^{85}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

\(\beta_{1}\)\(=\) \( 3\zeta_{40}^{2} \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \zeta_{40}^{4} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( 3\zeta_{40}^{6} \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( \zeta_{40}^{8} \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( 3\zeta_{40}^{10} \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( \zeta_{40}^{11} + 2\zeta_{40} \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( \zeta_{40}^{12} \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( \zeta_{40}^{13} + \zeta_{40}^{3} \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( 3\zeta_{40}^{14} \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( \zeta_{40}^{15} + 2\zeta_{40}^{5} \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( -\zeta_{40}^{11} + \zeta_{40} \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( -\zeta_{40}^{13} + 2\zeta_{40}^{3} \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( -\zeta_{40}^{15} + \zeta_{40}^{5} \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( -\zeta_{40}^{13} + \zeta_{40}^{9} + 2\zeta_{40}^{7} - \zeta_{40}^{5} + \zeta_{40} \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( -\zeta_{40}^{15} + \zeta_{40}^{11} + \zeta_{40}^{9} - \zeta_{40}^{7} + \zeta_{40}^{3} \) Copy content Toggle raw display
\(\zeta_{40}\)\(=\) \( ( \beta_{11} + \beta_{6} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{2}\)\(=\) \( ( \beta_1 ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{3}\)\(=\) \( ( \beta_{12} + \beta_{8} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{4}\)\(=\) \( \beta_{2} \) Copy content Toggle raw display
\(\zeta_{40}^{5}\)\(=\) \( ( \beta_{13} + \beta_{10} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{6}\)\(=\) \( ( \beta_{3} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{7}\)\(=\) \( ( -\beta_{15} + \beta_{14} + \beta_{13} - \beta_{11} + \beta_{8} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{8}\)\(=\) \( \beta_{4} \) Copy content Toggle raw display
\(\zeta_{40}^{9}\)\(=\) \( ( 2\beta_{15} + \beta_{14} - \beta_{13} - \beta_{12} + \beta_{11} + \beta_{10} - \beta_{6} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{10}\)\(=\) \( ( \beta_{5} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{11}\)\(=\) \( ( -2\beta_{11} + \beta_{6} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{12}\)\(=\) \( \beta_{7} \) Copy content Toggle raw display
\(\zeta_{40}^{13}\)\(=\) \( ( -\beta_{12} + 2\beta_{8} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{14}\)\(=\) \( ( \beta_{9} ) / 3 \) Copy content Toggle raw display
\(\zeta_{40}^{15}\)\(=\) \( ( -2\beta_{13} + \beta_{10} ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/900\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(451\) \(577\)
\(\chi(n)\) \(-1\) \(-1\) \(\beta_{7}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
179.1
−0.891007 + 0.453990i
0.453990 + 0.891007i
−0.453990 0.891007i
0.891007 0.453990i
−0.156434 0.987688i
−0.987688 + 0.156434i
0.987688 0.156434i
0.156434 + 0.987688i
−0.156434 + 0.987688i
−0.987688 0.156434i
0.987688 + 0.156434i
0.156434 0.987688i
−0.891007 0.453990i
0.453990 0.891007i
−0.453990 + 0.891007i
0.891007 + 0.453990i
−0.437016 + 1.34500i 0 −1.61803 1.17557i −1.81894 1.30056i 0 0 2.28825 1.66251i 0 2.54415 1.87811i
179.2 −0.437016 + 1.34500i 0 −1.61803 1.17557i 0.674819 + 2.13181i 0 0 2.28825 1.66251i 0 −3.16219 0.0240055i
179.3 0.437016 1.34500i 0 −1.61803 1.17557i −0.674819 2.13181i 0 0 −2.28825 + 1.66251i 0 −3.16219 0.0240055i
179.4 0.437016 1.34500i 0 −1.61803 1.17557i 1.81894 + 1.30056i 0 0 −2.28825 + 1.66251i 0 2.54415 1.87811i
359.1 −1.14412 0.831254i 0 0.618034 + 1.90211i −2.23600 + 0.0169745i 0 0 0.874032 2.68999i 0 2.57237 + 1.83927i
359.2 −1.14412 0.831254i 0 0.618034 + 1.90211i 1.79899 + 1.32802i 0 0 0.874032 2.68999i 0 −0.954339 3.01484i
359.3 1.14412 + 0.831254i 0 0.618034 + 1.90211i −1.79899 1.32802i 0 0 −0.874032 + 2.68999i 0 −0.954339 3.01484i
359.4 1.14412 + 0.831254i 0 0.618034 + 1.90211i 2.23600 0.0169745i 0 0 −0.874032 + 2.68999i 0 2.57237 + 1.83927i
539.1 −1.14412 + 0.831254i 0 0.618034 1.90211i −2.23600 0.0169745i 0 0 0.874032 + 2.68999i 0 2.57237 1.83927i
539.2 −1.14412 + 0.831254i 0 0.618034 1.90211i 1.79899 1.32802i 0 0 0.874032 + 2.68999i 0 −0.954339 + 3.01484i
539.3 1.14412 0.831254i 0 0.618034 1.90211i −1.79899 + 1.32802i 0 0 −0.874032 2.68999i 0 −0.954339 + 3.01484i
539.4 1.14412 0.831254i 0 0.618034 1.90211i 2.23600 + 0.0169745i 0 0 −0.874032 2.68999i 0 2.57237 1.83927i
719.1 −0.437016 1.34500i 0 −1.61803 + 1.17557i −1.81894 + 1.30056i 0 0 2.28825 + 1.66251i 0 2.54415 + 1.87811i
719.2 −0.437016 1.34500i 0 −1.61803 + 1.17557i 0.674819 2.13181i 0 0 2.28825 + 1.66251i 0 −3.16219 + 0.0240055i
719.3 0.437016 + 1.34500i 0 −1.61803 + 1.17557i −0.674819 + 2.13181i 0 0 −2.28825 1.66251i 0 −3.16219 + 0.0240055i
719.4 0.437016 + 1.34500i 0 −1.61803 + 1.17557i 1.81894 1.30056i 0 0 −2.28825 1.66251i 0 2.54415 + 1.87811i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 179.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 CM by \(\Q(\sqrt{-1}) \)
3.b odd 2 1 inner
12.b even 2 1 inner
25.e even 10 1 inner
75.h odd 10 1 inner
100.h odd 10 1 inner
300.r even 10 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 900.2.z.a 16
3.b odd 2 1 inner 900.2.z.a 16
4.b odd 2 1 CM 900.2.z.a 16
12.b even 2 1 inner 900.2.z.a 16
25.e even 10 1 inner 900.2.z.a 16
75.h odd 10 1 inner 900.2.z.a 16
100.h odd 10 1 inner 900.2.z.a 16
300.r even 10 1 inner 900.2.z.a 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
900.2.z.a 16 1.a even 1 1 trivial
900.2.z.a 16 3.b odd 2 1 inner
900.2.z.a 16 4.b odd 2 1 CM
900.2.z.a 16 12.b even 2 1 inner
900.2.z.a 16 25.e even 10 1 inner
900.2.z.a 16 75.h odd 10 1 inner
900.2.z.a 16 100.h odd 10 1 inner
900.2.z.a 16 300.r even 10 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7} \) acting on \(S_{2}^{\mathrm{new}}(900, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{8} + 2 T^{6} + 4 T^{4} + \cdots + 16)^{2} \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( T^{16} - 8 T^{14} + \cdots + 390625 \) Copy content Toggle raw display
$7$ \( T^{16} \) Copy content Toggle raw display
$11$ \( T^{16} \) Copy content Toggle raw display
$13$ \( (T^{8} - 36 T^{6} + \cdots + 39601)^{2} \) Copy content Toggle raw display
$17$ \( T^{16} + \cdots + 8653650625 \) Copy content Toggle raw display
$19$ \( T^{16} \) Copy content Toggle raw display
$23$ \( T^{16} \) Copy content Toggle raw display
$29$ \( T^{16} + \cdots + 13561255518721 \) Copy content Toggle raw display
$31$ \( T^{16} \) Copy content Toggle raw display
$37$ \( (T^{8} + 10 T^{7} + \cdots + 885481)^{2} \) Copy content Toggle raw display
$41$ \( T^{16} + \cdots + 4287885459841 \) Copy content Toggle raw display
$43$ \( T^{16} \) Copy content Toggle raw display
$47$ \( T^{16} \) Copy content Toggle raw display
$53$ \( T^{16} + \cdots + 117874991850625 \) Copy content Toggle raw display
$59$ \( T^{16} \) Copy content Toggle raw display
$61$ \( (T^{8} + 20 T^{7} + \cdots + 3591025)^{2} \) Copy content Toggle raw display
$67$ \( T^{16} \) Copy content Toggle raw display
$71$ \( T^{16} \) Copy content Toggle raw display
$73$ \( (T^{8} - 36 T^{6} + \cdots + 219069601)^{2} \) Copy content Toggle raw display
$79$ \( T^{16} \) Copy content Toggle raw display
$83$ \( T^{16} \) Copy content Toggle raw display
$89$ \( T^{16} + \cdots + 10\!\cdots\!21 \) Copy content Toggle raw display
$97$ \( (T^{8} - 324 T^{6} + \cdots + 26204161)^{2} \) Copy content Toggle raw display
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