Properties

Label 342.2.j.e
Level $342$
Weight $2$
Character orbit 342.j
Analytic conductor $2.731$
Analytic rank $0$
Dimension $8$
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] = [342,2,Mod(65,342)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(342, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("342.65");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 342 = 2 \cdot 3^{2} \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 342.j (of order \(6\), 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: \(2.73088374913\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: 8.0.152695449.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 2x^{7} + 3x^{5} - 5x^{4} + 6x^{3} - 16x + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 3 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

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

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 2x^{7} + 3x^{5} - 5x^{4} + 6x^{3} - 16x + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{6} - 2\nu^{5} + \nu^{3} - 3\nu^{2} + 10\nu - 8 ) / 12 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{7} - 4\nu^{6} + 11\nu^{4} - 3\nu^{3} - 4\nu^{2} - 16\nu - 24 ) / 24 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{6} + 4\nu^{5} + \nu^{3} + 3\nu^{2} - 8\nu + 4 ) / 12 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{7} - \nu^{6} - \nu^{4} - 6\nu^{3} - \nu^{2} + 8\nu - 12 ) / 12 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{7} + \nu^{6} + \nu^{4} + 6\nu^{3} - 11\nu^{2} + 4\nu + 12 ) / 12 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 5\nu^{7} - 4\nu^{6} - 4\nu^{5} + 7\nu^{4} - 7\nu^{3} + 16\nu^{2} + 12\nu - 64 ) / 24 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 4\nu^{7} - 3\nu^{6} - 4\nu^{5} + 8\nu^{4} - 13\nu^{3} + 17\nu^{2} + 28\nu - 52 ) / 12 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} - \beta_{6} + \beta_{5} + \beta_{3} - \beta_{2} + \beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} - \beta_{6} - 2\beta_{5} - 3\beta_{4} + \beta_{3} - \beta_{2} + \beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -\beta_{7} + 4\beta_{6} + 2\beta_{5} - 3\beta_{4} + 2\beta_{3} - 2\beta_{2} + 2\beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( \beta_{7} - \beta_{6} + \beta_{5} - \beta_{4} + \beta_{2} - \beta_1 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2\beta_{7} - 2\beta_{6} + 5\beta_{5} + 3\beta_{4} + 8\beta_{3} - 2\beta_{2} - 4\beta _1 - 6 ) / 3 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 2\beta_{7} + \beta_{6} + 8\beta_{5} - 7\beta_{3} - 5\beta_{2} - 19\beta _1 - 12 ) / 3 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -8\beta_{7} + 29\beta_{6} + 13\beta_{5} + 12\beta_{4} - 2\beta_{3} - 7\beta_{2} - 17\beta _1 + 24 ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/342\mathbb{Z}\right)^\times\).

\(n\) \(191\) \(325\)
\(\chi(n)\) \(1 + \beta_{6}\) \(1 + \beta_{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
65.1
−1.37475 + 0.331768i
1.05924 + 0.937022i
1.40702 + 0.142460i
−0.0915132 1.41125i
−1.37475 0.331768i
1.05924 0.937022i
1.40702 0.142460i
−0.0915132 + 1.41125i
0.500000 + 0.866025i −0.474693 + 1.66573i −0.500000 + 0.866025i 0.843540i −1.67991 + 0.421770i −0.874747 + 1.51511i −1.00000 −2.54933 1.58142i −0.730527 + 0.421770i
65.2 0.500000 + 0.866025i 0.218136 1.71826i −0.500000 + 0.866025i 1.34044i 1.59712 0.670219i 1.55924 2.70068i −1.00000 −2.90483 0.749627i 1.16085 0.670219i
65.3 0.500000 + 0.866025i 1.08014 + 1.35400i −0.500000 + 0.866025i 3.22485i −0.632527 + 1.61242i 1.90702 3.30306i −1.00000 −0.666611 + 2.92500i −2.79280 + 1.61242i
65.4 0.500000 + 0.866025i 1.67642 0.435444i −0.500000 + 0.866025i 2.46820i 1.21532 + 1.23410i 0.408487 0.707520i −1.00000 2.62078 1.45997i −2.13753 + 1.23410i
221.1 0.500000 0.866025i −0.474693 1.66573i −0.500000 0.866025i 0.843540i −1.67991 0.421770i −0.874747 1.51511i −1.00000 −2.54933 + 1.58142i −0.730527 0.421770i
221.2 0.500000 0.866025i 0.218136 + 1.71826i −0.500000 0.866025i 1.34044i 1.59712 + 0.670219i 1.55924 + 2.70068i −1.00000 −2.90483 + 0.749627i 1.16085 + 0.670219i
221.3 0.500000 0.866025i 1.08014 1.35400i −0.500000 0.866025i 3.22485i −0.632527 1.61242i 1.90702 + 3.30306i −1.00000 −0.666611 2.92500i −2.79280 1.61242i
221.4 0.500000 0.866025i 1.67642 + 0.435444i −0.500000 0.866025i 2.46820i 1.21532 1.23410i 0.408487 + 0.707520i −1.00000 2.62078 + 1.45997i −2.13753 1.23410i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 65.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
171.k even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 342.2.j.e 8
3.b odd 2 1 1026.2.j.e 8
9.c even 3 1 1026.2.n.e 8
9.d odd 6 1 342.2.n.e yes 8
19.d odd 6 1 342.2.n.e yes 8
57.f even 6 1 1026.2.n.e 8
171.k even 6 1 inner 342.2.j.e 8
171.s odd 6 1 1026.2.j.e 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
342.2.j.e 8 1.a even 1 1 trivial
342.2.j.e 8 171.k even 6 1 inner
342.2.n.e yes 8 9.d odd 6 1
342.2.n.e yes 8 19.d odd 6 1
1026.2.j.e 8 3.b odd 2 1
1026.2.j.e 8 171.s odd 6 1
1026.2.n.e 8 9.c even 3 1
1026.2.n.e 8 57.f even 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(342, [\chi])\):

\( T_{5}^{8} + 19T_{5}^{6} + 106T_{5}^{4} + 180T_{5}^{2} + 81 \) Copy content Toggle raw display
\( T_{7}^{8} - 6T_{7}^{7} + 32T_{7}^{6} - 66T_{7}^{5} + 159T_{7}^{4} - 120T_{7}^{3} + 509T_{7}^{2} - 357T_{7} + 289 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} - T + 1)^{4} \) Copy content Toggle raw display
$3$ \( T^{8} - 5 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$5$ \( T^{8} + 19 T^{6} + \cdots + 81 \) Copy content Toggle raw display
$7$ \( T^{8} - 6 T^{7} + \cdots + 289 \) Copy content Toggle raw display
$11$ \( T^{8} - 20 T^{6} + \cdots + 3249 \) Copy content Toggle raw display
$13$ \( T^{8} - 3 T^{7} + \cdots + 3969 \) Copy content Toggle raw display
$17$ \( T^{8} + 18 T^{7} + \cdots + 9 \) Copy content Toggle raw display
$19$ \( T^{8} - 3 T^{7} + \cdots + 130321 \) Copy content Toggle raw display
$23$ \( T^{8} + 12 T^{7} + \cdots + 40401 \) Copy content Toggle raw display
$29$ \( (T^{4} - 18 T^{3} + \cdots - 297)^{2} \) Copy content Toggle raw display
$31$ \( T^{8} - 9 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$37$ \( T^{8} + 174 T^{6} + \cdots + 3969 \) Copy content Toggle raw display
$41$ \( (T^{4} + 6 T^{3} + \cdots + 432)^{2} \) Copy content Toggle raw display
$43$ \( T^{8} - 13 T^{7} + \cdots + 14190289 \) Copy content Toggle raw display
$47$ \( T^{8} + 52 T^{6} + \cdots + 9 \) Copy content Toggle raw display
$53$ \( T^{8} - 3 T^{7} + \cdots + 531441 \) Copy content Toggle raw display
$59$ \( (T^{4} - 99 T^{2} + \cdots + 81)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} - 3 T^{3} + \cdots - 1043)^{2} \) Copy content Toggle raw display
$67$ \( T^{8} + 12 T^{7} + \cdots + 19210689 \) Copy content Toggle raw display
$71$ \( T^{8} + 18 T^{7} + \cdots + 6561 \) Copy content Toggle raw display
$73$ \( T^{8} - T^{7} + \cdots + 978121 \) Copy content Toggle raw display
$79$ \( T^{8} - 42 T^{7} + \cdots + 2047761 \) Copy content Toggle raw display
$83$ \( T^{8} - 18 T^{7} + \cdots + 59049 \) Copy content Toggle raw display
$89$ \( T^{8} + 6 T^{7} + \cdots + 17065161 \) Copy content Toggle raw display
$97$ \( T^{8} + 18 T^{7} + \cdots + 531441 \) Copy content Toggle raw display
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