Properties

Label 927.2.a.c
Level $927$
Weight $2$
Character orbit 927.a
Self dual yes
Analytic conductor $7.402$
Analytic rank $1$
Dimension $3$
CM no
Inner twists $1$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [927,2,Mod(1,927)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(927, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("927.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 927 = 3^{2} \cdot 103 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 927.a (trivial)

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: yes
Analytic conductor: \(7.40213226737\)
Analytic rank: \(1\)
Dimension: \(3\)
Coefficient field: 3.3.148.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - x^{2} - 3x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 309)
Fricke sign: \(1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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 \(1,\beta_1,\beta_2\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_1 q^{2} + (\beta_{2} + \beta_1) q^{4} - \beta_1 q^{5} + ( - \beta_{2} + \beta_1 - 1) q^{7} + ( - \beta_{2} - 1) q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_1 q^{2} + (\beta_{2} + \beta_1) q^{4} - \beta_1 q^{5} + ( - \beta_{2} + \beta_1 - 1) q^{7} + ( - \beta_{2} - 1) q^{8} + (\beta_{2} + \beta_1 + 2) q^{10} + (\beta_{2} + \beta_1 - 3) q^{11} + ( - 2 \beta_{2} - 1) q^{13} + ( - \beta_{2} + \beta_1 - 3) q^{14} + ( - 2 \beta_{2} - 1) q^{16} + (2 \beta_1 - 2) q^{17} + (2 \beta_{2} + 4) q^{19} + ( - \beta_{2} - 2 \beta_1 - 1) q^{20} + ( - \beta_{2} + \beta_1 - 1) q^{22} + ( - \beta_1 - 2) q^{23} + (\beta_{2} + \beta_1 - 3) q^{25} + (3 \beta_1 - 2) q^{26} + (\beta_{2} + \beta_1 - 1) q^{28} + (\beta_{2} + 3 \beta_1 - 1) q^{29} + ( - 2 \beta_1 + 3) q^{31} + (2 \beta_{2} + 3 \beta_1) q^{32} + ( - 2 \beta_{2} - 4) q^{34} + ( - \beta_{2} + \beta_1 - 3) q^{35} + (\beta_{2} - 3 \beta_1 - 1) q^{37} + ( - 6 \beta_1 + 2) q^{38} + (2 \beta_1 - 1) q^{40} + (3 \beta_{2} + \beta_1 - 1) q^{41} + (\beta_{2} - \beta_1) q^{43} + ( - 3 \beta_{2} - \beta_1 + 3) q^{44} + (\beta_{2} + 3 \beta_1 + 2) q^{46} + ( - \beta_{2} + 3 \beta_1 - 5) q^{47} + (2 \beta_{2} - 4 \beta_1 + 1) q^{49} + ( - \beta_{2} + \beta_1 - 1) q^{50} + (\beta_{2} - \beta_1 - 4) q^{52} + (\beta_{2} - \beta_1 + 3) q^{53} + ( - \beta_{2} + \beta_1 - 1) q^{55} + (\beta_{2} - 3 \beta_1 + 5) q^{56} + ( - 3 \beta_{2} - 3 \beta_1 - 5) q^{58} + ( - 2 \beta_{2} - 3 \beta_1 - 4) q^{59} + (3 \beta_{2} + 5 \beta_1 - 8) q^{61} + (2 \beta_{2} - \beta_1 + 4) q^{62} + (\beta_{2} - 5 \beta_1 - 2) q^{64} + (3 \beta_1 - 2) q^{65} + ( - 4 \beta_{2} - 1) q^{67} + (2 \beta_1 + 2) q^{68} + ( - \beta_{2} + 3 \beta_1 - 3) q^{70} + (4 \beta_{2} - 2 \beta_1 - 2) q^{71} + ( - \beta_{2} + 3 \beta_1 - 5) q^{73} + (3 \beta_{2} + 3 \beta_1 + 7) q^{74} + (2 \beta_{2} + 4 \beta_1 + 4) q^{76} + (4 \beta_{2} - 2 \beta_1 + 2) q^{77} + (3 \beta_{2} - \beta_1 + 1) q^{79} + (3 \beta_1 - 2) q^{80} + ( - \beta_{2} - 3 \beta_1 + 1) q^{82} + ( - \beta_{2} - 2 \beta_1 - 5) q^{83} + ( - 2 \beta_{2} - 4) q^{85} + (\beta_{2} + 3) q^{86} + (3 \beta_{2} - \beta_1 + 1) q^{88} + ( - 5 \beta_{2} - 3 \beta_1 - 7) q^{89} + (\beta_{2} - 5 \beta_1 + 9) q^{91} + ( - 3 \beta_{2} - 4 \beta_1 - 1) q^{92} + ( - 3 \beta_{2} + 3 \beta_1 - 7) q^{94} + ( - 6 \beta_1 + 2) q^{95} + (2 \beta_{2} - 6 \beta_1 + 3) q^{97} + (4 \beta_{2} + \beta_1 + 10) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q - q^{2} + q^{4} - q^{5} - 2 q^{7} - 3 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 3 q - q^{2} + q^{4} - q^{5} - 2 q^{7} - 3 q^{8} + 7 q^{10} - 8 q^{11} - 3 q^{13} - 8 q^{14} - 3 q^{16} - 4 q^{17} + 12 q^{19} - 5 q^{20} - 2 q^{22} - 7 q^{23} - 8 q^{25} - 3 q^{26} - 2 q^{28} + 7 q^{31} + 3 q^{32} - 12 q^{34} - 8 q^{35} - 6 q^{37} - q^{40} - 2 q^{41} - q^{43} + 8 q^{44} + 9 q^{46} - 12 q^{47} - q^{49} - 2 q^{50} - 13 q^{52} + 8 q^{53} - 2 q^{55} + 12 q^{56} - 18 q^{58} - 15 q^{59} - 19 q^{61} + 11 q^{62} - 11 q^{64} - 3 q^{65} - 3 q^{67} + 8 q^{68} - 6 q^{70} - 8 q^{71} - 12 q^{73} + 24 q^{74} + 16 q^{76} + 4 q^{77} + 2 q^{79} - 3 q^{80} - 17 q^{83} - 12 q^{85} + 9 q^{86} + 2 q^{88} - 24 q^{89} + 22 q^{91} - 7 q^{92} - 18 q^{94} + 3 q^{97} + 31 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 3x + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} - \nu - 2 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} + \beta _1 + 2 \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
2.17009
0.311108
−1.48119
−2.17009 0 2.70928 −2.17009 0 0.630898 −1.53919 0 4.70928
1.2 −0.311108 0 −1.90321 −0.311108 0 1.52543 1.21432 0 0.0967881
1.3 1.48119 0 0.193937 1.48119 0 −4.15633 −2.67513 0 2.19394
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(3\) \(-1\)
\(103\) \(-1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 927.2.a.c 3
3.b odd 2 1 309.2.a.b 3
12.b even 2 1 4944.2.a.v 3
15.d odd 2 1 7725.2.a.p 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
309.2.a.b 3 3.b odd 2 1
927.2.a.c 3 1.a even 1 1 trivial
4944.2.a.v 3 12.b even 2 1
7725.2.a.p 3 15.d odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{3} + T_{2}^{2} - 3T_{2} - 1 \) acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(927))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} + T^{2} - 3T - 1 \) Copy content Toggle raw display
$3$ \( T^{3} \) Copy content Toggle raw display
$5$ \( T^{3} + T^{2} - 3T - 1 \) Copy content Toggle raw display
$7$ \( T^{3} + 2 T^{2} + \cdots + 4 \) Copy content Toggle raw display
$11$ \( T^{3} + 8 T^{2} + \cdots + 4 \) Copy content Toggle raw display
$13$ \( T^{3} + 3 T^{2} + \cdots - 31 \) Copy content Toggle raw display
$17$ \( T^{3} + 4 T^{2} + \cdots - 16 \) Copy content Toggle raw display
$19$ \( T^{3} - 12 T^{2} + \cdots + 16 \) Copy content Toggle raw display
$23$ \( T^{3} + 7 T^{2} + \cdots + 5 \) Copy content Toggle raw display
$29$ \( T^{3} - 28T - 52 \) Copy content Toggle raw display
$31$ \( T^{3} - 7 T^{2} + \cdots + 19 \) Copy content Toggle raw display
$37$ \( T^{3} + 6 T^{2} + \cdots - 148 \) Copy content Toggle raw display
$41$ \( T^{3} + 2 T^{2} + \cdots + 52 \) Copy content Toggle raw display
$43$ \( T^{3} + T^{2} - 9T - 13 \) Copy content Toggle raw display
$47$ \( T^{3} + 12 T^{2} + \cdots - 20 \) Copy content Toggle raw display
$53$ \( T^{3} - 8 T^{2} + \cdots - 4 \) Copy content Toggle raw display
$59$ \( T^{3} + 15 T^{2} + \cdots + 17 \) Copy content Toggle raw display
$61$ \( T^{3} + 19 T^{2} + \cdots - 607 \) Copy content Toggle raw display
$67$ \( T^{3} + 3 T^{2} + \cdots - 191 \) Copy content Toggle raw display
$71$ \( T^{3} + 8 T^{2} + \cdots - 368 \) Copy content Toggle raw display
$73$ \( T^{3} + 12 T^{2} + \cdots - 20 \) Copy content Toggle raw display
$79$ \( T^{3} - 2 T^{2} + \cdots + 20 \) Copy content Toggle raw display
$83$ \( T^{3} + 17 T^{2} + \cdots + 125 \) Copy content Toggle raw display
$89$ \( T^{3} + 24 T^{2} + \cdots - 556 \) Copy content Toggle raw display
$97$ \( T^{3} - 3 T^{2} + \cdots - 449 \) Copy content Toggle raw display
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