Properties

Label 1575.2.g.b
Level $1575$
Weight $2$
Character orbit 1575.g
Analytic conductor $12.576$
Analytic rank $0$
Dimension $8$
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] = [1575,2,Mod(1574,1575)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1575, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1575.1574");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1575 = 3^{2} \cdot 5^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1575.g (of order \(2\), degree \(1\), 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: \(12.5764383184\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: \(\Q(\zeta_{24})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{2}\cdot 3^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{6} q^{2} + ( - \beta_{4} + \beta_1) q^{7} - 2 \beta_{6} q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{6} q^{2} + ( - \beta_{4} + \beta_1) q^{7} - 2 \beta_{6} q^{8} + \beta_{3} q^{11} + (2 \beta_{4} - \beta_1) q^{13} - \beta_{5} q^{14} - 4 q^{16} + ( - 2 \beta_{7} + \beta_{6}) q^{17} + ( - 2 \beta_{2} + 1) q^{19} + 2 \beta_1 q^{22} + 5 \beta_{6} q^{23} + (2 \beta_{5} + \beta_{3}) q^{26} - \beta_{3} q^{29} + ( - 2 \beta_{2} + 1) q^{31} + ( - 4 \beta_{2} + 2) q^{34} - 8 \beta_1 q^{37} + ( - 2 \beta_{7} + \beta_{6}) q^{38} + 5 \beta_1 q^{43} + 10 q^{46} + ( - 2 \beta_{7} + \beta_{6}) q^{47} + ( - \beta_{2} + 7) q^{49} - 4 \beta_{6} q^{53} + 2 \beta_{5} q^{56} - 2 \beta_1 q^{58} + ( - 2 \beta_{5} - \beta_{3}) q^{59} + (2 \beta_{2} - 1) q^{61} + ( - 2 \beta_{7} + \beta_{6}) q^{62} + 8 q^{64} + 7 \beta_1 q^{67} - 2 \beta_{3} q^{71} + (4 \beta_{4} - 2 \beta_1) q^{73} - 8 \beta_{3} q^{74} - \beta_{7} q^{77} - 14 q^{79} + ( - 2 \beta_{7} + \beta_{6}) q^{83} + 5 \beta_{3} q^{86} - 4 \beta_1 q^{88} + ( - 4 \beta_{5} - 2 \beta_{3}) q^{89} + (\beta_{2} - 14) q^{91} + ( - 4 \beta_{2} + 2) q^{94} + (2 \beta_{4} - \beta_1) q^{97} + ( - \beta_{7} + 7 \beta_{6}) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 32 q^{16} + 80 q^{46} + 52 q^{49} + 64 q^{64} - 112 q^{79} - 108 q^{91}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

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

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1575\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(451\) \(1226\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1574.1
−0.965926 + 0.258819i
−0.965926 0.258819i
0.258819 0.965926i
0.258819 + 0.965926i
0.965926 0.258819i
0.965926 + 0.258819i
−0.258819 + 0.965926i
−0.258819 0.965926i
−1.41421 0 0 0 0 −2.59808 0.500000i 2.82843 0 0
1574.2 −1.41421 0 0 0 0 −2.59808 + 0.500000i 2.82843 0 0
1574.3 −1.41421 0 0 0 0 2.59808 0.500000i 2.82843 0 0
1574.4 −1.41421 0 0 0 0 2.59808 + 0.500000i 2.82843 0 0
1574.5 1.41421 0 0 0 0 −2.59808 0.500000i −2.82843 0 0
1574.6 1.41421 0 0 0 0 −2.59808 + 0.500000i −2.82843 0 0
1574.7 1.41421 0 0 0 0 2.59808 0.500000i −2.82843 0 0
1574.8 1.41421 0 0 0 0 2.59808 + 0.500000i −2.82843 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1574.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
5.b even 2 1 inner
7.b odd 2 1 inner
15.d odd 2 1 inner
21.c even 2 1 inner
35.c odd 2 1 inner
105.g even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1575.2.g.b 8
3.b odd 2 1 inner 1575.2.g.b 8
5.b even 2 1 inner 1575.2.g.b 8
5.c odd 4 1 1575.2.b.d 4
5.c odd 4 1 1575.2.b.e yes 4
7.b odd 2 1 inner 1575.2.g.b 8
15.d odd 2 1 inner 1575.2.g.b 8
15.e even 4 1 1575.2.b.d 4
15.e even 4 1 1575.2.b.e yes 4
21.c even 2 1 inner 1575.2.g.b 8
35.c odd 2 1 inner 1575.2.g.b 8
35.f even 4 1 1575.2.b.d 4
35.f even 4 1 1575.2.b.e yes 4
105.g even 2 1 inner 1575.2.g.b 8
105.k odd 4 1 1575.2.b.d 4
105.k odd 4 1 1575.2.b.e yes 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1575.2.b.d 4 5.c odd 4 1
1575.2.b.d 4 15.e even 4 1
1575.2.b.d 4 35.f even 4 1
1575.2.b.d 4 105.k odd 4 1
1575.2.b.e yes 4 5.c odd 4 1
1575.2.b.e yes 4 15.e even 4 1
1575.2.b.e yes 4 35.f even 4 1
1575.2.b.e yes 4 105.k odd 4 1
1575.2.g.b 8 1.a even 1 1 trivial
1575.2.g.b 8 3.b odd 2 1 inner
1575.2.g.b 8 5.b even 2 1 inner
1575.2.g.b 8 7.b odd 2 1 inner
1575.2.g.b 8 15.d odd 2 1 inner
1575.2.g.b 8 21.c even 2 1 inner
1575.2.g.b 8 35.c odd 2 1 inner
1575.2.g.b 8 105.g even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1575, [\chi])\):

\( T_{2}^{2} - 2 \) Copy content Toggle raw display
\( T_{59}^{2} - 54 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} - 2)^{4} \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( T^{8} \) Copy content Toggle raw display
$7$ \( (T^{4} - 13 T^{2} + 49)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} + 2)^{4} \) Copy content Toggle raw display
$13$ \( (T^{2} - 27)^{4} \) Copy content Toggle raw display
$17$ \( (T^{2} + 54)^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} + 27)^{4} \) Copy content Toggle raw display
$23$ \( (T^{2} - 50)^{4} \) Copy content Toggle raw display
$29$ \( (T^{2} + 2)^{4} \) Copy content Toggle raw display
$31$ \( (T^{2} + 27)^{4} \) Copy content Toggle raw display
$37$ \( (T^{2} + 64)^{4} \) Copy content Toggle raw display
$41$ \( T^{8} \) Copy content Toggle raw display
$43$ \( (T^{2} + 25)^{4} \) Copy content Toggle raw display
$47$ \( (T^{2} + 54)^{4} \) Copy content Toggle raw display
$53$ \( (T^{2} - 32)^{4} \) Copy content Toggle raw display
$59$ \( (T^{2} - 54)^{4} \) Copy content Toggle raw display
$61$ \( (T^{2} + 27)^{4} \) Copy content Toggle raw display
$67$ \( (T^{2} + 49)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} + 8)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} - 108)^{4} \) Copy content Toggle raw display
$79$ \( (T + 14)^{8} \) Copy content Toggle raw display
$83$ \( (T^{2} + 54)^{4} \) Copy content Toggle raw display
$89$ \( (T^{2} - 216)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} - 27)^{4} \) Copy content Toggle raw display
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