Properties

Label 2394.2.a.r
Level $2394$
Weight $2$
Character orbit 2394.a
Self dual yes
Analytic conductor $19.116$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $1$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2394,2,Mod(1,2394)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2394, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 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("2394.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2394 = 2 \cdot 3^{2} \cdot 7 \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2394.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: \(19.1161862439\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{2}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 798)
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 \(\beta = 2\sqrt{2}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - q^{2} + q^{4} + \beta q^{5} + q^{7} - q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q - q^{2} + q^{4} + \beta q^{5} + q^{7} - q^{8} - \beta q^{10} - 2 q^{11} + \beta q^{13} - q^{14} + q^{16} + q^{19} + \beta q^{20} + 2 q^{22} + (\beta - 2) q^{23} + 3 q^{25} - \beta q^{26} + q^{28} + ( - 2 \beta - 2) q^{29} + (\beta + 4) q^{31} - q^{32} + \beta q^{35} + (3 \beta + 2) q^{37} - q^{38} - \beta q^{40} + ( - 2 \beta + 2) q^{41} + 8 q^{43} - 2 q^{44} + ( - \beta + 2) q^{46} + \beta q^{47} + q^{49} - 3 q^{50} + \beta q^{52} + (2 \beta - 2) q^{53} - 2 \beta q^{55} - q^{56} + (2 \beta + 2) q^{58} + (2 \beta + 4) q^{59} + ( - 4 \beta - 2) q^{61} + ( - \beta - 4) q^{62} + q^{64} + 8 q^{65} + 10 q^{67} - \beta q^{70} + (2 \beta + 4) q^{71} + (2 \beta - 6) q^{73} + ( - 3 \beta - 2) q^{74} + q^{76} - 2 q^{77} + (\beta - 6) q^{79} + \beta q^{80} + (2 \beta - 2) q^{82} - 4 \beta q^{83} - 8 q^{86} + 2 q^{88} + 10 q^{89} + \beta q^{91} + (\beta - 2) q^{92} - \beta q^{94} + \beta q^{95} + ( - 4 \beta - 4) q^{97} - q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{2} + 2 q^{4} + 2 q^{7} - 2 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{2} + 2 q^{4} + 2 q^{7} - 2 q^{8} - 4 q^{11} - 2 q^{14} + 2 q^{16} + 2 q^{19} + 4 q^{22} - 4 q^{23} + 6 q^{25} + 2 q^{28} - 4 q^{29} + 8 q^{31} - 2 q^{32} + 4 q^{37} - 2 q^{38} + 4 q^{41} + 16 q^{43} - 4 q^{44} + 4 q^{46} + 2 q^{49} - 6 q^{50} - 4 q^{53} - 2 q^{56} + 4 q^{58} + 8 q^{59} - 4 q^{61} - 8 q^{62} + 2 q^{64} + 16 q^{65} + 20 q^{67} + 8 q^{71} - 12 q^{73} - 4 q^{74} + 2 q^{76} - 4 q^{77} - 12 q^{79} - 4 q^{82} - 16 q^{86} + 4 q^{88} + 20 q^{89} - 4 q^{92} - 8 q^{97} - 2 q^{98}+O(q^{100}) \) 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
−1.41421
1.41421
−1.00000 0 1.00000 −2.82843 0 1.00000 −1.00000 0 2.82843
1.2 −1.00000 0 1.00000 2.82843 0 1.00000 −1.00000 0 −2.82843
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)
\(3\) \(-1\)
\(7\) \(-1\)
\(19\) \(-1\)

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 2394.2.a.r 2
3.b odd 2 1 798.2.a.l 2
12.b even 2 1 6384.2.a.bq 2
21.c even 2 1 5586.2.a.bp 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
798.2.a.l 2 3.b odd 2 1
2394.2.a.r 2 1.a even 1 1 trivial
5586.2.a.bp 2 21.c even 2 1
6384.2.a.bq 2 12.b even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(2394))\):

\( T_{5}^{2} - 8 \) Copy content Toggle raw display
\( T_{11} + 2 \) Copy content Toggle raw display
\( T_{13}^{2} - 8 \) Copy content Toggle raw display
\( T_{17} \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} - 8 \) Copy content Toggle raw display
$7$ \( (T - 1)^{2} \) Copy content Toggle raw display
$11$ \( (T + 2)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} - 8 \) Copy content Toggle raw display
$17$ \( T^{2} \) Copy content Toggle raw display
$19$ \( (T - 1)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 4T - 4 \) Copy content Toggle raw display
$29$ \( T^{2} + 4T - 28 \) Copy content Toggle raw display
$31$ \( T^{2} - 8T + 8 \) Copy content Toggle raw display
$37$ \( T^{2} - 4T - 68 \) Copy content Toggle raw display
$41$ \( T^{2} - 4T - 28 \) Copy content Toggle raw display
$43$ \( (T - 8)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} - 8 \) Copy content Toggle raw display
$53$ \( T^{2} + 4T - 28 \) Copy content Toggle raw display
$59$ \( T^{2} - 8T - 16 \) Copy content Toggle raw display
$61$ \( T^{2} + 4T - 124 \) Copy content Toggle raw display
$67$ \( (T - 10)^{2} \) Copy content Toggle raw display
$71$ \( T^{2} - 8T - 16 \) Copy content Toggle raw display
$73$ \( T^{2} + 12T + 4 \) Copy content Toggle raw display
$79$ \( T^{2} + 12T + 28 \) Copy content Toggle raw display
$83$ \( T^{2} - 128 \) Copy content Toggle raw display
$89$ \( (T - 10)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 8T - 112 \) Copy content Toggle raw display
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