Properties

Label 418.2.a.e
Level $418$
Weight $2$
Character orbit 418.a
Self dual yes
Analytic conductor $3.338$
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] = [418,2,Mod(1,418)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(418, 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("418.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 418 = 2 \cdot 11 \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 418.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: \(3.33774680449\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{17}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x - 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
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 \(\beta = \frac{1}{2}(1 + \sqrt{17})\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - q^{2} + ( - \beta + 1) q^{3} + q^{4} + 2 q^{5} + (\beta - 1) q^{6} + (\beta + 1) q^{7} - q^{8} + ( - \beta + 2) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - q^{2} + ( - \beta + 1) q^{3} + q^{4} + 2 q^{5} + (\beta - 1) q^{6} + (\beta + 1) q^{7} - q^{8} + ( - \beta + 2) q^{9} - 2 q^{10} + q^{11} + ( - \beta + 1) q^{12} + ( - \beta - 1) q^{13} + ( - \beta - 1) q^{14} + ( - 2 \beta + 2) q^{15} + q^{16} + (\beta + 1) q^{17} + (\beta - 2) q^{18} - q^{19} + 2 q^{20} + ( - \beta - 3) q^{21} - q^{22} + (\beta + 3) q^{23} + (\beta - 1) q^{24} - q^{25} + (\beta + 1) q^{26} + (\beta + 3) q^{27} + (\beta + 1) q^{28} + (3 \beta - 1) q^{29} + (2 \beta - 2) q^{30} + 2 q^{31} - q^{32} + ( - \beta + 1) q^{33} + ( - \beta - 1) q^{34} + (2 \beta + 2) q^{35} + ( - \beta + 2) q^{36} + (2 \beta - 2) q^{37} + q^{38} + (\beta + 3) q^{39} - 2 q^{40} + 2 q^{41} + (\beta + 3) q^{42} + q^{44} + ( - 2 \beta + 4) q^{45} + ( - \beta - 3) q^{46} + 8 q^{47} + ( - \beta + 1) q^{48} + (3 \beta - 2) q^{49} + q^{50} + ( - \beta - 3) q^{51} + ( - \beta - 1) q^{52} + ( - 5 \beta + 5) q^{53} + ( - \beta - 3) q^{54} + 2 q^{55} + ( - \beta - 1) q^{56} + (\beta - 1) q^{57} + ( - 3 \beta + 1) q^{58} + (3 \beta - 3) q^{59} + ( - 2 \beta + 2) q^{60} - 4 \beta q^{61} - 2 q^{62} - 2 q^{63} + q^{64} + ( - 2 \beta - 2) q^{65} + (\beta - 1) q^{66} + (3 \beta - 3) q^{67} + (\beta + 1) q^{68} + ( - 3 \beta - 1) q^{69} + ( - 2 \beta - 2) q^{70} + 6 q^{71} + (\beta - 2) q^{72} + (3 \beta - 5) q^{73} + ( - 2 \beta + 2) q^{74} + (\beta - 1) q^{75} - q^{76} + (\beta + 1) q^{77} + ( - \beta - 3) q^{78} - 4 q^{79} + 2 q^{80} - 7 q^{81} - 2 q^{82} + ( - 4 \beta + 8) q^{83} + ( - \beta - 3) q^{84} + (2 \beta + 2) q^{85} + (\beta - 13) q^{87} - q^{88} + ( - 2 \beta - 4) q^{89} + (2 \beta - 4) q^{90} + ( - 3 \beta - 5) q^{91} + (\beta + 3) q^{92} + ( - 2 \beta + 2) q^{93} - 8 q^{94} - 2 q^{95} + (\beta - 1) q^{96} + (2 \beta - 4) q^{97} + ( - 3 \beta + 2) q^{98} + ( - \beta + 2) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{2} + q^{3} + 2 q^{4} + 4 q^{5} - q^{6} + 3 q^{7} - 2 q^{8} + 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{2} + q^{3} + 2 q^{4} + 4 q^{5} - q^{6} + 3 q^{7} - 2 q^{8} + 3 q^{9} - 4 q^{10} + 2 q^{11} + q^{12} - 3 q^{13} - 3 q^{14} + 2 q^{15} + 2 q^{16} + 3 q^{17} - 3 q^{18} - 2 q^{19} + 4 q^{20} - 7 q^{21} - 2 q^{22} + 7 q^{23} - q^{24} - 2 q^{25} + 3 q^{26} + 7 q^{27} + 3 q^{28} + q^{29} - 2 q^{30} + 4 q^{31} - 2 q^{32} + q^{33} - 3 q^{34} + 6 q^{35} + 3 q^{36} - 2 q^{37} + 2 q^{38} + 7 q^{39} - 4 q^{40} + 4 q^{41} + 7 q^{42} + 2 q^{44} + 6 q^{45} - 7 q^{46} + 16 q^{47} + q^{48} - q^{49} + 2 q^{50} - 7 q^{51} - 3 q^{52} + 5 q^{53} - 7 q^{54} + 4 q^{55} - 3 q^{56} - q^{57} - q^{58} - 3 q^{59} + 2 q^{60} - 4 q^{61} - 4 q^{62} - 4 q^{63} + 2 q^{64} - 6 q^{65} - q^{66} - 3 q^{67} + 3 q^{68} - 5 q^{69} - 6 q^{70} + 12 q^{71} - 3 q^{72} - 7 q^{73} + 2 q^{74} - q^{75} - 2 q^{76} + 3 q^{77} - 7 q^{78} - 8 q^{79} + 4 q^{80} - 14 q^{81} - 4 q^{82} + 12 q^{83} - 7 q^{84} + 6 q^{85} - 25 q^{87} - 2 q^{88} - 10 q^{89} - 6 q^{90} - 13 q^{91} + 7 q^{92} + 2 q^{93} - 16 q^{94} - 4 q^{95} - q^{96} - 6 q^{97} + q^{98} + 3 q^{99}+O(q^{100}) \) 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
2.56155
−1.56155
−1.00000 −1.56155 1.00000 2.00000 1.56155 3.56155 −1.00000 −0.561553 −2.00000
1.2 −1.00000 2.56155 1.00000 2.00000 −2.56155 −0.561553 −1.00000 3.56155 −2.00000
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)
\(11\) \(-1\)
\(19\) \(1\)

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 418.2.a.e 2
3.b odd 2 1 3762.2.a.y 2
4.b odd 2 1 3344.2.a.k 2
11.b odd 2 1 4598.2.a.bj 2
19.b odd 2 1 7942.2.a.x 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
418.2.a.e 2 1.a even 1 1 trivial
3344.2.a.k 2 4.b odd 2 1
3762.2.a.y 2 3.b odd 2 1
4598.2.a.bj 2 11.b odd 2 1
7942.2.a.x 2 19.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{2} - T_{3} - 4 \) acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(418))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - T - 4 \) Copy content Toggle raw display
$5$ \( (T - 2)^{2} \) Copy content Toggle raw display
$7$ \( T^{2} - 3T - 2 \) Copy content Toggle raw display
$11$ \( (T - 1)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 3T - 2 \) Copy content Toggle raw display
$17$ \( T^{2} - 3T - 2 \) Copy content Toggle raw display
$19$ \( (T + 1)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} - 7T + 8 \) Copy content Toggle raw display
$29$ \( T^{2} - T - 38 \) Copy content Toggle raw display
$31$ \( (T - 2)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 2T - 16 \) Copy content Toggle raw display
$41$ \( (T - 2)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} \) Copy content Toggle raw display
$47$ \( (T - 8)^{2} \) Copy content Toggle raw display
$53$ \( T^{2} - 5T - 100 \) Copy content Toggle raw display
$59$ \( T^{2} + 3T - 36 \) Copy content Toggle raw display
$61$ \( T^{2} + 4T - 64 \) Copy content Toggle raw display
$67$ \( T^{2} + 3T - 36 \) Copy content Toggle raw display
$71$ \( (T - 6)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 7T - 26 \) Copy content Toggle raw display
$79$ \( (T + 4)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} - 12T - 32 \) Copy content Toggle raw display
$89$ \( T^{2} + 10T + 8 \) Copy content Toggle raw display
$97$ \( T^{2} + 6T - 8 \) Copy content Toggle raw display
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