Properties

Label 154.2.e.e
Level $154$
Weight $2$
Character orbit 154.e
Analytic conductor $1.230$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [154,2,Mod(23,154)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(154, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([2, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("154.23");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 154 = 2 \cdot 7 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 154.e (of order \(3\), degree \(2\), 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: \(1.22969619113\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\Q(\sqrt{2}, \sqrt{-3})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 2x^{2} + 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{2} q^{2} + (\beta_{2} + \beta_1 + 1) q^{3} + ( - \beta_{2} - 1) q^{4} + (\beta_{3} - 2 \beta_{2} + \beta_1) q^{5} + (\beta_{3} - 1) q^{6} + ( - \beta_{3} + \beta_{2} + \beta_1) q^{7} + q^{8} + (2 \beta_{3} + 2 \beta_1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{2} q^{2} + (\beta_{2} + \beta_1 + 1) q^{3} + ( - \beta_{2} - 1) q^{4} + (\beta_{3} - 2 \beta_{2} + \beta_1) q^{5} + (\beta_{3} - 1) q^{6} + ( - \beta_{3} + \beta_{2} + \beta_1) q^{7} + q^{8} + (2 \beta_{3} + 2 \beta_1) q^{9} + (2 \beta_{2} - \beta_1 + 2) q^{10} + ( - \beta_{2} - 1) q^{11} + ( - \beta_{3} - \beta_{2} - \beta_1) q^{12} + (2 \beta_{3} - 1) q^{13} + (2 \beta_{3} - \beta_{2} + \beta_1 - 1) q^{14} - \beta_{3} q^{15} + \beta_{2} q^{16} + (2 \beta_{2} - 4 \beta_1 + 2) q^{17} - 2 \beta_1 q^{18} + (\beta_{3} - 2 \beta_{2} + \beta_1) q^{19} + ( - \beta_{3} - 2) q^{20} + (2 \beta_{3} + 4 \beta_{2} + 2 \beta_1 + 1) q^{21} + q^{22} + ( - 3 \beta_{3} - 2 \beta_{2} - 3 \beta_1) q^{23} + (\beta_{2} + \beta_1 + 1) q^{24} + ( - \beta_{2} + 4 \beta_1 - 1) q^{25} + ( - 2 \beta_{3} - \beta_{2} - 2 \beta_1) q^{26} + ( - \beta_{3} - 1) q^{27} + ( - \beta_{3} - 2 \beta_1 + 1) q^{28} + ( - 4 \beta_{3} - 3) q^{29} + (\beta_{3} + \beta_1) q^{30} + (4 \beta_{2} + 4) q^{31} + ( - \beta_{2} - 1) q^{32} + ( - \beta_{3} - \beta_{2} - \beta_1) q^{33} + ( - 4 \beta_{3} - 2) q^{34} + ( - 4 \beta_{3} + 4 \beta_{2} - 3 \beta_1) q^{35} - 2 \beta_{3} q^{36} + ( - \beta_{3} - 8 \beta_{2} - \beta_1) q^{37} + (2 \beta_{2} - \beta_1 + 2) q^{38} + ( - 5 \beta_{2} - 3 \beta_1 - 5) q^{39} + (\beta_{3} - 2 \beta_{2} + \beta_1) q^{40} + (\beta_{3} - 4) q^{41} + ( - 3 \beta_{2} - 2 \beta_1 - 4) q^{42} + 4 \beta_{3} q^{43} + \beta_{2} q^{44} + ( - 4 \beta_{2} + 4 \beta_1 - 4) q^{45} + (2 \beta_{2} + 3 \beta_1 + 2) q^{46} + ( - 6 \beta_{3} - 2 \beta_{2} - 6 \beta_1) q^{47} + (\beta_{3} - 1) q^{48} + (4 \beta_{3} + 5 \beta_{2} + 2 \beta_1 + 5) q^{49} + (4 \beta_{3} + 1) q^{50} + ( - 2 \beta_{3} - 6 \beta_{2} - 2 \beta_1) q^{51} + (\beta_{2} + 2 \beta_1 + 1) q^{52} + (2 \beta_{2} - 7 \beta_1 + 2) q^{53} + (\beta_{3} - \beta_{2} + \beta_1) q^{54} + ( - \beta_{3} - 2) q^{55} + ( - \beta_{3} + \beta_{2} + \beta_1) q^{56} - \beta_{3} q^{57} + (4 \beta_{3} - 3 \beta_{2} + 4 \beta_1) q^{58} + (7 \beta_{2} - \beta_1 + 7) q^{59} - \beta_1 q^{60} + (2 \beta_{3} + 9 \beta_{2} + 2 \beta_1) q^{61} - 4 q^{62} + (4 \beta_{2} - 2 \beta_1 - 4) q^{63} + q^{64} + (3 \beta_{3} - 2 \beta_{2} + 3 \beta_1) q^{65} + (\beta_{2} + \beta_1 + 1) q^{66} + ( - 7 \beta_{2} + 3 \beta_1 - 7) q^{67} + (4 \beta_{3} - 2 \beta_{2} + 4 \beta_1) q^{68} + ( - 5 \beta_{3} + 8) q^{69} + (\beta_{3} - 4 \beta_{2} + 4 \beta_1 - 4) q^{70} + (5 \beta_{3} - 4) q^{71} + (2 \beta_{3} + 2 \beta_1) q^{72} + (8 \beta_{2} + \beta_1 + 8) q^{73} + (8 \beta_{2} + \beta_1 + 8) q^{74} + (3 \beta_{3} + 7 \beta_{2} + 3 \beta_1) q^{75} + ( - \beta_{3} - 2) q^{76} + ( - \beta_{3} - 2 \beta_1 + 1) q^{77} + ( - 3 \beta_{3} + 5) q^{78} + ( - 3 \beta_{3} - 9 \beta_{2} - 3 \beta_1) q^{79} + (2 \beta_{2} - \beta_1 + 2) q^{80} + (\beta_{2} + 6 \beta_1 + 1) q^{81} + ( - \beta_{3} - 4 \beta_{2} - \beta_1) q^{82} + (10 \beta_{3} + 2) q^{83} + ( - 2 \beta_{3} - \beta_{2} + 3) q^{84} + (10 \beta_{3} + 12) q^{85} + ( - 4 \beta_{3} - 4 \beta_1) q^{86} + (5 \beta_{2} + \beta_1 + 5) q^{87} + ( - \beta_{2} - 1) q^{88} + (6 \beta_{3} + 4 \beta_{2} + 6 \beta_1) q^{89} + (4 \beta_{3} + 4) q^{90} + ( - \beta_{3} - 5 \beta_{2} - 3 \beta_1 - 8) q^{91} + (3 \beta_{3} - 2) q^{92} + (4 \beta_{3} + 4 \beta_{2} + 4 \beta_1) q^{93} + (2 \beta_{2} + 6 \beta_1 + 2) q^{94} + ( - 6 \beta_{2} + 4 \beta_1 - 6) q^{95} + ( - \beta_{3} - \beta_{2} - \beta_1) q^{96} + (2 \beta_{3} - 1) q^{97} + ( - 2 \beta_{3} - 4 \beta_1 - 5) q^{98} - 2 \beta_{3} q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 2 q^{2} + 2 q^{3} - 2 q^{4} + 4 q^{5} - 4 q^{6} - 2 q^{7} + 4 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 2 q^{2} + 2 q^{3} - 2 q^{4} + 4 q^{5} - 4 q^{6} - 2 q^{7} + 4 q^{8} + 4 q^{10} - 2 q^{11} + 2 q^{12} - 4 q^{13} - 2 q^{14} - 2 q^{16} + 4 q^{17} + 4 q^{19} - 8 q^{20} - 4 q^{21} + 4 q^{22} + 4 q^{23} + 2 q^{24} - 2 q^{25} + 2 q^{26} - 4 q^{27} + 4 q^{28} - 12 q^{29} + 8 q^{31} - 2 q^{32} + 2 q^{33} - 8 q^{34} - 8 q^{35} + 16 q^{37} + 4 q^{38} - 10 q^{39} + 4 q^{40} - 16 q^{41} - 10 q^{42} - 2 q^{44} - 8 q^{45} + 4 q^{46} + 4 q^{47} - 4 q^{48} + 10 q^{49} + 4 q^{50} + 12 q^{51} + 2 q^{52} + 4 q^{53} + 2 q^{54} - 8 q^{55} - 2 q^{56} + 6 q^{58} + 14 q^{59} - 18 q^{61} - 16 q^{62} - 24 q^{63} + 4 q^{64} + 4 q^{65} + 2 q^{66} - 14 q^{67} + 4 q^{68} + 32 q^{69} - 8 q^{70} - 16 q^{71} + 16 q^{73} + 16 q^{74} - 14 q^{75} - 8 q^{76} + 4 q^{77} + 20 q^{78} + 18 q^{79} + 4 q^{80} + 2 q^{81} + 8 q^{82} + 8 q^{83} + 14 q^{84} + 48 q^{85} + 10 q^{87} - 2 q^{88} - 8 q^{89} + 16 q^{90} - 22 q^{91} - 8 q^{92} - 8 q^{93} + 4 q^{94} - 12 q^{95} + 2 q^{96} - 4 q^{97} - 20 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 2x^{2} + 4 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{2} ) / 2 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} ) / 2 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( 2\beta_{2} \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 2\beta_{3} \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/154\mathbb{Z}\right)^\times\).

\(n\) \(45\) \(57\)
\(\chi(n)\) \(\beta_{2}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
23.1
−0.707107 1.22474i
0.707107 + 1.22474i
−0.707107 + 1.22474i
0.707107 1.22474i
−0.500000 + 0.866025i −0.207107 0.358719i −0.500000 0.866025i 1.70711 2.95680i 0.414214 −2.62132 0.358719i 1.00000 1.41421 2.44949i 1.70711 + 2.95680i
23.2 −0.500000 + 0.866025i 1.20711 + 2.09077i −0.500000 0.866025i 0.292893 0.507306i −2.41421 1.62132 + 2.09077i 1.00000 −1.41421 + 2.44949i 0.292893 + 0.507306i
67.1 −0.500000 0.866025i −0.207107 + 0.358719i −0.500000 + 0.866025i 1.70711 + 2.95680i 0.414214 −2.62132 + 0.358719i 1.00000 1.41421 + 2.44949i 1.70711 2.95680i
67.2 −0.500000 0.866025i 1.20711 2.09077i −0.500000 + 0.866025i 0.292893 + 0.507306i −2.41421 1.62132 2.09077i 1.00000 −1.41421 2.44949i 0.292893 0.507306i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 154.2.e.e 4
3.b odd 2 1 1386.2.k.t 4
4.b odd 2 1 1232.2.q.f 4
7.b odd 2 1 1078.2.e.m 4
7.c even 3 1 inner 154.2.e.e 4
7.c even 3 1 1078.2.a.t 2
7.d odd 6 1 1078.2.a.x 2
7.d odd 6 1 1078.2.e.m 4
21.g even 6 1 9702.2.a.ch 2
21.h odd 6 1 1386.2.k.t 4
21.h odd 6 1 9702.2.a.cx 2
28.f even 6 1 8624.2.a.bh 2
28.g odd 6 1 1232.2.q.f 4
28.g odd 6 1 8624.2.a.cc 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
154.2.e.e 4 1.a even 1 1 trivial
154.2.e.e 4 7.c even 3 1 inner
1078.2.a.t 2 7.c even 3 1
1078.2.a.x 2 7.d odd 6 1
1078.2.e.m 4 7.b odd 2 1
1078.2.e.m 4 7.d odd 6 1
1232.2.q.f 4 4.b odd 2 1
1232.2.q.f 4 28.g odd 6 1
1386.2.k.t 4 3.b odd 2 1
1386.2.k.t 4 21.h odd 6 1
8624.2.a.bh 2 28.f even 6 1
8624.2.a.cc 2 28.g odd 6 1
9702.2.a.ch 2 21.g even 6 1
9702.2.a.cx 2 21.h odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(154, [\chi])\):

\( T_{3}^{4} - 2T_{3}^{3} + 5T_{3}^{2} + 2T_{3} + 1 \) Copy content Toggle raw display
\( T_{13}^{2} + 2T_{13} - 7 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} + T + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{4} - 2 T^{3} + 5 T^{2} + 2 T + 1 \) Copy content Toggle raw display
$5$ \( T^{4} - 4 T^{3} + 14 T^{2} - 8 T + 4 \) Copy content Toggle raw display
$7$ \( T^{4} + 2 T^{3} - 3 T^{2} + 14 T + 49 \) Copy content Toggle raw display
$11$ \( (T^{2} + T + 1)^{2} \) Copy content Toggle raw display
$13$ \( (T^{2} + 2 T - 7)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} - 4 T^{3} + 44 T^{2} + 112 T + 784 \) Copy content Toggle raw display
$19$ \( T^{4} - 4 T^{3} + 14 T^{2} - 8 T + 4 \) Copy content Toggle raw display
$23$ \( T^{4} - 4 T^{3} + 30 T^{2} + 56 T + 196 \) Copy content Toggle raw display
$29$ \( (T^{2} + 6 T - 23)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} - 4 T + 16)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} - 16 T^{3} + 194 T^{2} + \cdots + 3844 \) Copy content Toggle raw display
$41$ \( (T^{2} + 8 T + 14)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} - 32)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} - 4 T^{3} + 84 T^{2} + \cdots + 4624 \) Copy content Toggle raw display
$53$ \( T^{4} - 4 T^{3} + 110 T^{2} + \cdots + 8836 \) Copy content Toggle raw display
$59$ \( T^{4} - 14 T^{3} + 149 T^{2} + \cdots + 2209 \) Copy content Toggle raw display
$61$ \( T^{4} + 18 T^{3} + 251 T^{2} + \cdots + 5329 \) Copy content Toggle raw display
$67$ \( T^{4} + 14 T^{3} + 165 T^{2} + \cdots + 961 \) Copy content Toggle raw display
$71$ \( (T^{2} + 8 T - 34)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} - 16 T^{3} + 194 T^{2} + \cdots + 3844 \) Copy content Toggle raw display
$79$ \( T^{4} - 18 T^{3} + 261 T^{2} + \cdots + 3969 \) Copy content Toggle raw display
$83$ \( (T^{2} - 4 T - 196)^{2} \) Copy content Toggle raw display
$89$ \( T^{4} + 8 T^{3} + 120 T^{2} + \cdots + 3136 \) Copy content Toggle raw display
$97$ \( (T^{2} + 2 T - 7)^{2} \) Copy content Toggle raw display
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