Properties

Label 2205.2.a.t
Level $2205$
Weight $2$
Character orbit 2205.a
Self dual yes
Analytic conductor $17.607$
Analytic rank $0$
Dimension $2$
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] = [2205,2,Mod(1,2205)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2205, 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("2205.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2205 = 3^{2} \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2205.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: \(17.6070136457\)
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: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 245)
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 \(\beta = \sqrt{2}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta q^{2} - q^{5} - 2 \beta q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q + \beta q^{2} - q^{5} - 2 \beta q^{8} - \beta q^{10} + ( - 2 \beta + 3) q^{11} + (\beta + 3) q^{13} - 4 q^{16} + ( - 3 \beta + 1) q^{17} + 6 q^{19} + (3 \beta - 4) q^{22} + ( - \beta - 6) q^{23} + q^{25} + (3 \beta + 2) q^{26} + (4 \beta + 3) q^{29} + (3 \beta + 6) q^{31} + (\beta - 6) q^{34} + (3 \beta - 2) q^{37} + 6 \beta q^{38} + 2 \beta q^{40} + (3 \beta + 2) q^{41} + 2 q^{43} + ( - 6 \beta - 2) q^{46} + (3 \beta + 3) q^{47} + \beta q^{50} - 3 \beta q^{53} + (2 \beta - 3) q^{55} + (3 \beta + 8) q^{58} + (3 \beta - 2) q^{59} - 2 \beta q^{61} + (6 \beta + 6) q^{62} + 8 q^{64} + ( - \beta - 3) q^{65} + ( - 3 \beta - 4) q^{67} + ( - 2 \beta + 6) q^{71} - 6 \beta q^{73} + ( - 2 \beta + 6) q^{74} + (6 \beta - 7) q^{79} + 4 q^{80} + (2 \beta + 6) q^{82} + (3 \beta - 1) q^{85} + 2 \beta q^{86} + ( - 6 \beta + 8) q^{88} + 8 q^{89} + (3 \beta + 6) q^{94} - 6 q^{95} + (3 \beta + 9) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{5}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{5} + 6 q^{11} + 6 q^{13} - 8 q^{16} + 2 q^{17} + 12 q^{19} - 8 q^{22} - 12 q^{23} + 2 q^{25} + 4 q^{26} + 6 q^{29} + 12 q^{31} - 12 q^{34} - 4 q^{37} + 4 q^{41} + 4 q^{43} - 4 q^{46} + 6 q^{47} - 6 q^{55} + 16 q^{58} - 4 q^{59} + 12 q^{62} + 16 q^{64} - 6 q^{65} - 8 q^{67} + 12 q^{71} + 12 q^{74} - 14 q^{79} + 8 q^{80} + 12 q^{82} - 2 q^{85} + 16 q^{88} + 16 q^{89} + 12 q^{94} - 12 q^{95} + 18 q^{97}+O(q^{100}) \) 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
−1.41421 0 0 −1.00000 0 0 2.82843 0 1.41421
1.2 1.41421 0 0 −1.00000 0 0 −2.82843 0 −1.41421
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(3\) \(-1\)
\(5\) \(1\)
\(7\) \(1\)

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 2205.2.a.t 2
3.b odd 2 1 245.2.a.f yes 2
7.b odd 2 1 2205.2.a.v 2
12.b even 2 1 3920.2.a.br 2
15.d odd 2 1 1225.2.a.p 2
15.e even 4 2 1225.2.b.j 4
21.c even 2 1 245.2.a.e 2
21.g even 6 2 245.2.e.g 4
21.h odd 6 2 245.2.e.f 4
84.h odd 2 1 3920.2.a.bw 2
105.g even 2 1 1225.2.a.r 2
105.k odd 4 2 1225.2.b.i 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
245.2.a.e 2 21.c even 2 1
245.2.a.f yes 2 3.b odd 2 1
245.2.e.f 4 21.h odd 6 2
245.2.e.g 4 21.g even 6 2
1225.2.a.p 2 15.d odd 2 1
1225.2.a.r 2 105.g even 2 1
1225.2.b.i 4 105.k odd 4 2
1225.2.b.j 4 15.e even 4 2
2205.2.a.t 2 1.a even 1 1 trivial
2205.2.a.v 2 7.b odd 2 1
3920.2.a.br 2 12.b even 2 1
3920.2.a.bw 2 84.h odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(2205))\):

\( T_{2}^{2} - 2 \) Copy content Toggle raw display
\( T_{11}^{2} - 6T_{11} + 1 \) Copy content Toggle raw display
\( T_{13}^{2} - 6T_{13} + 7 \) Copy content Toggle raw display
\( T_{17}^{2} - 2T_{17} - 17 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} - 2 \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( (T + 1)^{2} \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} - 6T + 1 \) Copy content Toggle raw display
$13$ \( T^{2} - 6T + 7 \) Copy content Toggle raw display
$17$ \( T^{2} - 2T - 17 \) Copy content Toggle raw display
$19$ \( (T - 6)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 12T + 34 \) Copy content Toggle raw display
$29$ \( T^{2} - 6T - 23 \) Copy content Toggle raw display
$31$ \( T^{2} - 12T + 18 \) Copy content Toggle raw display
$37$ \( T^{2} + 4T - 14 \) Copy content Toggle raw display
$41$ \( T^{2} - 4T - 14 \) Copy content Toggle raw display
$43$ \( (T - 2)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} - 6T - 9 \) Copy content Toggle raw display
$53$ \( T^{2} - 18 \) Copy content Toggle raw display
$59$ \( T^{2} + 4T - 14 \) Copy content Toggle raw display
$61$ \( T^{2} - 8 \) Copy content Toggle raw display
$67$ \( T^{2} + 8T - 2 \) Copy content Toggle raw display
$71$ \( T^{2} - 12T + 28 \) Copy content Toggle raw display
$73$ \( T^{2} - 72 \) Copy content Toggle raw display
$79$ \( T^{2} + 14T - 23 \) Copy content Toggle raw display
$83$ \( T^{2} \) Copy content Toggle raw display
$89$ \( (T - 8)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} - 18T + 63 \) Copy content Toggle raw display
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