Properties

Label 392.6.i.n
Level $392$
Weight $6$
Character orbit 392.i
Analytic conductor $62.870$
Analytic rank $0$
Dimension $8$
Inner twists $4$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [392,6,Mod(177,392)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("392.177"); S:= CuspForms(chi, 6); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(392, base_ring=CyclotomicField(6)) chi = DirichletCharacter(H, H._module([0, 0, 2])) N = Newforms(chi, 6, names="a")
 
Level: \( N \) \(=\) \( 392 = 2^{3} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 6 \)
Character orbit: \([\chi]\) \(=\) 392.i (of order \(3\), degree \(2\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [8,0,0,0,0,0,0,0,92] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(9)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(62.8704573667\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\mathbb{Q}[x]/(x^{8} + \cdots)\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 110x^{6} + 11956x^{4} + 15840x^{2} + 20736 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{9}]\)
Coefficient ring index: \( 2^{14} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content 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.

\(f(q)\) \(=\) \( q + \beta_{2} q^{3} - \beta_{5} q^{5} + ( - \beta_{7} - \beta_{4} - 23 \beta_{3} + 23) q^{9} + (3 \beta_{7} + 88 \beta_{3}) q^{11} + ( - 12 \beta_{6} + 11 \beta_{5} + \cdots + 11 \beta_1) q^{13} + (\beta_{4} + 28) q^{15}+ \cdots + ( - 157 \beta_{4} + 140312) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 92 q^{9} + 352 q^{11} + 224 q^{15} - 1968 q^{23} - 924 q^{25} + 8080 q^{29} - 10504 q^{37} + 9328 q^{39} + 57472 q^{43} - 23584 q^{51} + 28296 q^{53} + 125728 q^{57} - 146320 q^{65} + 72576 q^{67}+ \cdots + 1122496 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 110x^{6} + 11956x^{4} + 15840x^{2} + 20736 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{7} - 725432\nu ) / 71736 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{7} + 1299320\nu ) / 71736 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 55\nu^{6} + 5978\nu^{4} + 657580\nu^{2} + 871200 ) / 860832 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -\nu^{6} + 641740 ) / 2989 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 1669\nu^{7} + 185318\nu^{5} + 19954564\nu^{3} + 26436960\nu ) / 2582496 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{7} + 110\nu^{5} + 11956\nu^{3} + 15840\nu ) / 864 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -2953\nu^{6} - 328790\nu^{4} - 35306068\nu^{2} - 46775520 ) / 215208 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} + \beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} + \beta_{4} + 220\beta_{3} - 220 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 31\beta_{6} - 55\beta_{5} - 31\beta_{2} - 55\beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -55\beta_{7} - 11812\beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -1669\beta_{6} + 2989\beta_{5} ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -2989\beta_{4} + 641740 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 90679\beta_{2} + 162415\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/392\mathbb{Z}\right)^\times\).

\(n\) \(197\) \(295\) \(297\)
\(\chi(n)\) \(1\) \(1\) \(-1 + \beta_{3}\)

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
177.1
−0.575555 0.996890i
−5.21236 9.02808i
5.21236 + 9.02808i
0.575555 + 0.996890i
−0.575555 + 0.996890i
−5.21236 + 9.02808i
5.21236 9.02808i
0.575555 0.996890i
0 −10.4247 18.0562i 0 −5.82029 + 10.0810i 0 0 0 −95.8499 + 166.017i 0
177.2 0 −1.15111 1.99378i 0 40.5478 70.2309i 0 0 0 118.850 205.854i 0
177.3 0 1.15111 + 1.99378i 0 −40.5478 + 70.2309i 0 0 0 118.850 205.854i 0
177.4 0 10.4247 + 18.0562i 0 5.82029 10.0810i 0 0 0 −95.8499 + 166.017i 0
361.1 0 −10.4247 + 18.0562i 0 −5.82029 10.0810i 0 0 0 −95.8499 166.017i 0
361.2 0 −1.15111 + 1.99378i 0 40.5478 + 70.2309i 0 0 0 118.850 + 205.854i 0
361.3 0 1.15111 1.99378i 0 −40.5478 70.2309i 0 0 0 118.850 + 205.854i 0
361.4 0 10.4247 18.0562i 0 5.82029 + 10.0810i 0 0 0 −95.8499 166.017i 0
\(n\): e.g. 2-40 or 80-90
Embeddings: e.g. 1-3 or 177.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.b odd 2 1 inner
7.c even 3 1 inner
7.d odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 392.6.i.n 8
7.b odd 2 1 inner 392.6.i.n 8
7.c even 3 1 392.6.a.g 4
7.c even 3 1 inner 392.6.i.n 8
7.d odd 6 1 392.6.a.g 4
7.d odd 6 1 inner 392.6.i.n 8
28.f even 6 1 784.6.a.be 4
28.g odd 6 1 784.6.a.be 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
392.6.a.g 4 7.c even 3 1
392.6.a.g 4 7.d odd 6 1
392.6.i.n 8 1.a even 1 1 trivial
392.6.i.n 8 7.b odd 2 1 inner
392.6.i.n 8 7.c even 3 1 inner
392.6.i.n 8 7.d odd 6 1 inner
784.6.a.be 4 28.f even 6 1
784.6.a.be 4 28.g odd 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{8} + 440T_{3}^{6} + 191296T_{3}^{4} + 1013760T_{3}^{2} + 5308416 \) acting on \(S_{6}^{\mathrm{new}}(392, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( T^{8} + 440 T^{6} + \cdots + 5308416 \) Copy content Toggle raw display
$5$ \( T^{8} + \cdots + 794123370496 \) Copy content Toggle raw display
$7$ \( T^{8} \) Copy content Toggle raw display
$11$ \( (T^{4} - 176 T^{3} + \cdots + 165746694400)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} - 860728 T^{2} + 12619376896)^{2} \) Copy content Toggle raw display
$17$ \( T^{8} + \cdots + 29\!\cdots\!00 \) Copy content Toggle raw display
$19$ \( T^{8} + \cdots + 83\!\cdots\!56 \) Copy content Toggle raw display
$23$ \( (T^{4} + \cdots + 12192052690944)^{2} \) Copy content Toggle raw display
$29$ \( (T - 1010)^{8} \) Copy content Toggle raw display
$31$ \( T^{8} + \cdots + 15\!\cdots\!00 \) Copy content Toggle raw display
$37$ \( (T^{4} + \cdots + 64629186835984)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + \cdots + 37\!\cdots\!04)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} - 14368 T + 18005872)^{4} \) Copy content Toggle raw display
$47$ \( T^{8} + \cdots + 33\!\cdots\!56 \) Copy content Toggle raw display
$53$ \( (T^{4} + \cdots + 30\!\cdots\!00)^{2} \) Copy content Toggle raw display
$59$ \( T^{8} + \cdots + 30\!\cdots\!00 \) Copy content Toggle raw display
$61$ \( T^{8} + \cdots + 31\!\cdots\!16 \) Copy content Toggle raw display
$67$ \( (T^{4} + \cdots + 13\!\cdots\!04)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} - 88368 T + 1220405760)^{4} \) Copy content Toggle raw display
$73$ \( T^{8} + \cdots + 37\!\cdots\!16 \) Copy content Toggle raw display
$79$ \( (T^{4} + \cdots + 12\!\cdots\!24)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + \cdots + 81\!\cdots\!16)^{2} \) Copy content Toggle raw display
$89$ \( T^{8} + \cdots + 26\!\cdots\!96 \) Copy content Toggle raw display
$97$ \( (T^{4} + \cdots + 44\!\cdots\!56)^{2} \) Copy content Toggle raw display
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