Properties

Label 276.2.g.a
Level $276$
Weight $2$
Character orbit 276.g
Analytic conductor $2.204$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [276,2,Mod(137,276)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(276, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 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("276.137");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 276 = 2^{2} \cdot 3 \cdot 23 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 276.g (of order \(2\), degree \(1\), 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: \(2.20387109579\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.14453810176.7
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 9x^{6} + 15x^{4} - 30x^{2} + 64 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{4} \)
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.

\(f(q)\) \(=\) \( q + \beta_{4} q^{3} + \beta_{5} q^{5} - \beta_{7} q^{7} + ( - \beta_{3} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{4} q^{3} + \beta_{5} q^{5} - \beta_{7} q^{7} + ( - \beta_{3} - 1) q^{9} + (\beta_{6} + \beta_{5}) q^{11} + (\beta_{4} - \beta_{2}) q^{13} + (\beta_{6} - \beta_1) q^{15} + ( - 2 \beta_{6} - \beta_{5}) q^{17} + (\beta_{7} + \beta_{6} + \cdots - 2 \beta_1) q^{19}+ \cdots + (3 \beta_{7} + \beta_{6} - \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 2 q^{3} - 6 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 2 q^{3} - 6 q^{9} + 4 q^{13} + 8 q^{27} - 20 q^{31} + 18 q^{39} - 32 q^{49} + 32 q^{55} - 14 q^{69} + 4 q^{73} - 34 q^{75} - 46 q^{81} - 24 q^{85} - 2 q^{87} + 46 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 9x^{6} + 15x^{4} - 30x^{2} + 64 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 2\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -3\nu^{6} - 20\nu^{4} - 67\nu^{2} - 97 ) / 103 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 4\nu^{6} + 61\nu^{4} + 158\nu^{2} - 214 ) / 103 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -6\nu^{6} - 40\nu^{4} - 31\nu^{2} + 115 ) / 103 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -23\nu^{7} - 119\nu^{5} - 33\nu^{3} + 458\nu ) / 824 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -27\nu^{7} - 283\nu^{5} - 397\nu^{3} + 2114\nu ) / 824 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -29\nu^{7} - 365\nu^{5} - 1403\nu^{3} - 354\nu ) / 824 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{4} - 2\beta_{2} - 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -2\beta_{7} + 3\beta_{6} - \beta_{5} - 4\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -2\beta_{4} + 3\beta_{3} + 8\beta_{2} + 16 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 5\beta_{7} - 19\beta_{6} + 16\beta_{5} + 21\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -9\beta_{4} - 20\beta_{3} - 43\beta_{2} - 72 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -23\beta_{7} + 94\beta_{6} - 153\beta_{5} - 83\beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/276\mathbb{Z}\right)^\times\).

\(n\) \(97\) \(139\) \(185\)
\(\chi(n)\) \(-1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
137.1
−0.331077 2.33494i
0.331077 + 2.33494i
−0.331077 + 2.33494i
0.331077 2.33494i
−1.06789 0.545948i
1.06789 + 0.545948i
−1.06789 + 0.545948i
1.06789 0.545948i
0 −0.780776 1.54609i 0 −3.02045 0 2.62238i 0 −1.78078 + 2.41430i 0
137.2 0 −0.780776 1.54609i 0 3.02045 0 2.62238i 0 −1.78078 + 2.41430i 0
137.3 0 −0.780776 + 1.54609i 0 −3.02045 0 2.62238i 0 −1.78078 2.41430i 0
137.4 0 −0.780776 + 1.54609i 0 3.02045 0 2.62238i 0 −1.78078 2.41430i 0
137.5 0 1.28078 1.16602i 0 −0.936426 0 3.88884i 0 0.280776 2.98683i 0
137.6 0 1.28078 1.16602i 0 0.936426 0 3.88884i 0 0.280776 2.98683i 0
137.7 0 1.28078 + 1.16602i 0 −0.936426 0 3.88884i 0 0.280776 + 2.98683i 0
137.8 0 1.28078 + 1.16602i 0 0.936426 0 3.88884i 0 0.280776 + 2.98683i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 137.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
23.b odd 2 1 inner
69.c even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 276.2.g.a 8
3.b odd 2 1 inner 276.2.g.a 8
4.b odd 2 1 1104.2.m.b 8
12.b even 2 1 1104.2.m.b 8
23.b odd 2 1 inner 276.2.g.a 8
69.c even 2 1 inner 276.2.g.a 8
92.b even 2 1 1104.2.m.b 8
276.h odd 2 1 1104.2.m.b 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
276.2.g.a 8 1.a even 1 1 trivial
276.2.g.a 8 3.b odd 2 1 inner
276.2.g.a 8 23.b odd 2 1 inner
276.2.g.a 8 69.c even 2 1 inner
1104.2.m.b 8 4.b odd 2 1
1104.2.m.b 8 12.b even 2 1
1104.2.m.b 8 92.b even 2 1
1104.2.m.b 8 276.h odd 2 1

Hecke kernels

This newform subspace is the entire newspace \(S_{2}^{\mathrm{new}}(276, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{4} - T^{3} + 2 T^{2} + \cdots + 9)^{2} \) Copy content Toggle raw display
$5$ \( (T^{4} - 10 T^{2} + 8)^{2} \) Copy content Toggle raw display
$7$ \( (T^{4} + 22 T^{2} + 104)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} - 20 T^{2} + 32)^{2} \) Copy content Toggle raw display
$13$ \( (T^{2} - T - 4)^{4} \) Copy content Toggle raw display
$17$ \( (T^{4} - 58 T^{2} + 8)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 82 T^{2} + 1664)^{2} \) Copy content Toggle raw display
$23$ \( T^{8} - 20 T^{6} + \cdots + 279841 \) Copy content Toggle raw display
$29$ \( (T^{4} + 59 T^{2} + 832)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} + 5 T - 32)^{4} \) Copy content Toggle raw display
$37$ \( (T^{4} + 92 T^{2} + 416)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 115 T^{2} + 208)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 82 T^{2} + 1664)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 123 T^{2} + 208)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} - 190 T^{2} + 8192)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} + 60 T^{2} + 832)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 88 T^{2} + 1664)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} + 198 T^{2} + 8424)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 15 T^{2} + 52)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} - T - 38)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} + 146 T^{2} + 416)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} - 116 T^{2} + 32)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 62 T^{2} + 128)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 116 T^{2} + 1664)^{2} \) Copy content Toggle raw display
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