Properties

Label 900.2.r.b
Level $900$
Weight $2$
Character orbit 900.r
Analytic conductor $7.187$
Analytic rank $0$
Dimension $8$
Inner twists $8$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [900,2,Mod(551,900)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("900.551"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(900, base_ring=CyclotomicField(6)) chi = DirichletCharacter(H, H._module([3, 1, 0])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 900 = 2^{2} \cdot 3^{2} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 900.r (of order \(6\), degree \(2\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [8,0,0,8,0,0,0,0,-12,0,0,0] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(12)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(7.18653618192\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\Q(\zeta_{24})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2^{2}\cdot 3^{2} \)
Twist minimal: no (minimal twist has level 180)
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content gp:mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{3} q^{2} + (\beta_{4} - \beta_{2}) q^{3} + ( - 2 \beta_1 + 2) q^{4} + \beta_{7} q^{6} + (2 \beta_{4} - \beta_{2}) q^{7} + (2 \beta_{5} - 2 \beta_{3}) q^{8} - 3 \beta_1 q^{9} + ( - \beta_{7} - \beta_{6}) q^{11}+ \cdots + (6 \beta_{7} - 3 \beta_{6}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 8 q^{4} - 12 q^{9} - 16 q^{16} - 12 q^{29} + 8 q^{34} - 48 q^{36} - 36 q^{41} + 8 q^{49} - 28 q^{61} - 64 q^{64} + 72 q^{66} + 36 q^{69} + 24 q^{74} - 36 q^{81} - 72 q^{84}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

\(\beta_{1}\)\(=\) \( \zeta_{24}^{4} \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \zeta_{24}^{6} + \zeta_{24}^{2} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( -\zeta_{24}^{7} + \zeta_{24} \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( -\zeta_{24}^{6} + 2\zeta_{24}^{2} \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( -\zeta_{24}^{7} + \zeta_{24}^{5} + \zeta_{24}^{3} \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( \zeta_{24}^{7} - \zeta_{24}^{5} + \zeta_{24}^{3} + 2\zeta_{24} \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( 2\zeta_{24}^{7} + \zeta_{24}^{5} - \zeta_{24}^{3} + \zeta_{24} \) Copy content Toggle raw display
\(\zeta_{24}\)\(=\) \( ( \beta_{7} + \beta_{6} + 3\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\zeta_{24}^{2}\)\(=\) \( ( \beta_{4} + \beta_{2} ) / 3 \) Copy content Toggle raw display
\(\zeta_{24}^{3}\)\(=\) \( ( -\beta_{7} + 2\beta_{6} + 3\beta_{5} - 3\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\zeta_{24}^{4}\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\zeta_{24}^{5}\)\(=\) \( ( 2\beta_{7} - \beta_{6} + 3\beta_{5} ) / 6 \) Copy content Toggle raw display
\(\zeta_{24}^{6}\)\(=\) \( ( -\beta_{4} + 2\beta_{2} ) / 3 \) Copy content Toggle raw display
\(\zeta_{24}^{7}\)\(=\) \( ( \beta_{7} + \beta_{6} - 3\beta_{3} ) / 6 \) Copy content Toggle raw display

Character values

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

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

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
551.1
0.258819 + 0.965926i
0.965926 0.258819i
−0.258819 0.965926i
−0.965926 + 0.258819i
0.258819 0.965926i
0.965926 + 0.258819i
−0.258819 + 0.965926i
−0.965926 0.258819i
−1.22474 0.707107i −0.866025 1.50000i 1.00000 + 1.73205i 0 2.44949i −2.59808 1.50000i 2.82843i −1.50000 + 2.59808i 0
551.2 −1.22474 0.707107i 0.866025 + 1.50000i 1.00000 + 1.73205i 0 2.44949i 2.59808 + 1.50000i 2.82843i −1.50000 + 2.59808i 0
551.3 1.22474 + 0.707107i −0.866025 1.50000i 1.00000 + 1.73205i 0 2.44949i −2.59808 1.50000i 2.82843i −1.50000 + 2.59808i 0
551.4 1.22474 + 0.707107i 0.866025 + 1.50000i 1.00000 + 1.73205i 0 2.44949i 2.59808 + 1.50000i 2.82843i −1.50000 + 2.59808i 0
851.1 −1.22474 + 0.707107i −0.866025 + 1.50000i 1.00000 1.73205i 0 2.44949i −2.59808 + 1.50000i 2.82843i −1.50000 2.59808i 0
851.2 −1.22474 + 0.707107i 0.866025 1.50000i 1.00000 1.73205i 0 2.44949i 2.59808 1.50000i 2.82843i −1.50000 2.59808i 0
851.3 1.22474 0.707107i −0.866025 + 1.50000i 1.00000 1.73205i 0 2.44949i −2.59808 + 1.50000i 2.82843i −1.50000 2.59808i 0
851.4 1.22474 0.707107i 0.866025 1.50000i 1.00000 1.73205i 0 2.44949i 2.59808 1.50000i 2.82843i −1.50000 2.59808i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 551.4
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
9.d odd 6 1 inner
20.d odd 2 1 inner
36.h even 6 1 inner
45.h odd 6 1 inner
180.n even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 900.2.r.b 8
4.b odd 2 1 inner 900.2.r.b 8
5.b even 2 1 inner 900.2.r.b 8
5.c odd 4 1 180.2.n.a 4
5.c odd 4 1 180.2.n.b yes 4
9.d odd 6 1 inner 900.2.r.b 8
15.e even 4 1 540.2.n.a 4
15.e even 4 1 540.2.n.b 4
20.d odd 2 1 inner 900.2.r.b 8
20.e even 4 1 180.2.n.a 4
20.e even 4 1 180.2.n.b yes 4
36.h even 6 1 inner 900.2.r.b 8
45.h odd 6 1 inner 900.2.r.b 8
45.k odd 12 1 540.2.n.a 4
45.k odd 12 1 540.2.n.b 4
45.l even 12 1 180.2.n.a 4
45.l even 12 1 180.2.n.b yes 4
60.l odd 4 1 540.2.n.a 4
60.l odd 4 1 540.2.n.b 4
180.n even 6 1 inner 900.2.r.b 8
180.v odd 12 1 180.2.n.a 4
180.v odd 12 1 180.2.n.b yes 4
180.x even 12 1 540.2.n.a 4
180.x even 12 1 540.2.n.b 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
180.2.n.a 4 5.c odd 4 1
180.2.n.a 4 20.e even 4 1
180.2.n.a 4 45.l even 12 1
180.2.n.a 4 180.v odd 12 1
180.2.n.b yes 4 5.c odd 4 1
180.2.n.b yes 4 20.e even 4 1
180.2.n.b yes 4 45.l even 12 1
180.2.n.b yes 4 180.v odd 12 1
540.2.n.a 4 15.e even 4 1
540.2.n.a 4 45.k odd 12 1
540.2.n.a 4 60.l odd 4 1
540.2.n.a 4 180.x even 12 1
540.2.n.b 4 15.e even 4 1
540.2.n.b 4 45.k odd 12 1
540.2.n.b 4 60.l odd 4 1
540.2.n.b 4 180.x even 12 1
900.2.r.b 8 1.a even 1 1 trivial
900.2.r.b 8 4.b odd 2 1 inner
900.2.r.b 8 5.b even 2 1 inner
900.2.r.b 8 9.d odd 6 1 inner
900.2.r.b 8 20.d odd 2 1 inner
900.2.r.b 8 36.h even 6 1 inner
900.2.r.b 8 45.h odd 6 1 inner
900.2.r.b 8 180.n even 6 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(900, [\chi])\):

\( T_{7}^{4} - 9T_{7}^{2} + 81 \) Copy content Toggle raw display
\( T_{13}^{4} + 6T_{13}^{2} + 36 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} - 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$3$ \( (T^{4} + 3 T^{2} + 9)^{2} \) Copy content Toggle raw display
$5$ \( T^{8} \) Copy content Toggle raw display
$7$ \( (T^{4} - 9 T^{2} + 81)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} + 18 T^{2} + 324)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 6 T^{2} + 36)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} + 2)^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} + 54)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} + 27 T^{2} + 729)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} + 3 T + 3)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} - 54 T^{2} + 2916)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} - 6)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} + 9 T + 27)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} - 36 T^{2} + 1296)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 27 T^{2} + 729)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} + 32)^{4} \) Copy content Toggle raw display
$59$ \( T^{8} \) Copy content Toggle raw display
$61$ \( (T^{2} + 7 T + 49)^{4} \) Copy content Toggle raw display
$67$ \( (T^{4} - 9 T^{2} + 81)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} - 18)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} - 24)^{4} \) Copy content Toggle raw display
$79$ \( T^{8} \) Copy content Toggle raw display
$83$ \( (T^{4} + 27 T^{2} + 729)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} + 75)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} + 216 T^{2} + 46656)^{2} \) Copy content Toggle raw display
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