Properties

Label 390.8.a.p
Level $390$
Weight $8$
Character orbit 390.a
Self dual yes
Analytic conductor $121.830$
Analytic rank $0$
Dimension $4$
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] = [390,8,Mod(1,390)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(390, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0]))
 
N = Newforms(chi, 8, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("390.1");
 
S:= CuspForms(chi, 8);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 390 = 2 \cdot 3 \cdot 5 \cdot 13 \)
Weight: \( k \) \(=\) \( 8 \)
Character orbit: \([\chi]\) \(=\) 390.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: \(121.830159939\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\mathbb{Q}[x]/(x^{4} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - 2x^{3} - 121275x^{2} - 12923350x + 102608000 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{3}\cdot 3\cdot 5 \)
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 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.

\(f(q)\) \(=\) \( q - 8 q^{2} + 27 q^{3} + 64 q^{4} - 125 q^{5} - 216 q^{6} + (\beta_{2} - \beta_1 + 588) q^{7} - 512 q^{8} + 729 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - 8 q^{2} + 27 q^{3} + 64 q^{4} - 125 q^{5} - 216 q^{6} + (\beta_{2} - \beta_1 + 588) q^{7} - 512 q^{8} + 729 q^{9} + 1000 q^{10} + ( - \beta_{3} - \beta_1 - 738) q^{11} + 1728 q^{12} + 2197 q^{13} + ( - 8 \beta_{2} + 8 \beta_1 - 4704) q^{14} - 3375 q^{15} + 4096 q^{16} + ( - 4 \beta_{3} + 5 \beta_{2} + \cdots - 1012) q^{17}+ \cdots + ( - 729 \beta_{3} - 729 \beta_1 - 538002) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 32 q^{2} + 108 q^{3} + 256 q^{4} - 500 q^{5} - 864 q^{6} + 2351 q^{7} - 2048 q^{8} + 2916 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 32 q^{2} + 108 q^{3} + 256 q^{4} - 500 q^{5} - 864 q^{6} + 2351 q^{7} - 2048 q^{8} + 2916 q^{9} + 4000 q^{10} - 2951 q^{11} + 6912 q^{12} + 8788 q^{13} - 18808 q^{14} - 13500 q^{15} + 16384 q^{16} - 4049 q^{17} - 23328 q^{18} + 50204 q^{19} - 32000 q^{20} + 63477 q^{21} + 23608 q^{22} + 20691 q^{23} - 55296 q^{24} + 62500 q^{25} - 70304 q^{26} + 78732 q^{27} + 150464 q^{28} - 51982 q^{29} + 108000 q^{30} + 55570 q^{31} - 131072 q^{32} - 79677 q^{33} + 32392 q^{34} - 293875 q^{35} + 186624 q^{36} + 537115 q^{37} - 401632 q^{38} + 237276 q^{39} + 256000 q^{40} - 390745 q^{41} - 507816 q^{42} - 364572 q^{43} - 188864 q^{44} - 364500 q^{45} - 165528 q^{46} - 258146 q^{47} + 442368 q^{48} + 2091033 q^{49} - 500000 q^{50} - 109323 q^{51} + 562432 q^{52} - 1097131 q^{53} - 629856 q^{54} + 368875 q^{55} - 1203712 q^{56} + 1355508 q^{57} + 415856 q^{58} + 541664 q^{59} - 864000 q^{60} + 4054055 q^{61} - 444560 q^{62} + 1713879 q^{63} + 1048576 q^{64} - 1098500 q^{65} + 637416 q^{66} + 5876932 q^{67} - 259136 q^{68} + 558657 q^{69} + 2351000 q^{70} + 4233661 q^{71} - 1492992 q^{72} + 3690762 q^{73} - 4296920 q^{74} + 1687500 q^{75} + 3213056 q^{76} + 411441 q^{77} - 1898208 q^{78} - 667479 q^{79} - 2048000 q^{80} + 2125764 q^{81} + 3125960 q^{82} - 3851892 q^{83} + 4062528 q^{84} + 506125 q^{85} + 2916576 q^{86} - 1403514 q^{87} + 1510912 q^{88} - 9247107 q^{89} + 2916000 q^{90} + 5165147 q^{91} + 1324224 q^{92} + 1500390 q^{93} + 2065168 q^{94} - 6275500 q^{95} - 3538944 q^{96} + 2491219 q^{97} - 16728264 q^{98} - 2151279 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - 2x^{3} - 121275x^{2} - 12923350x + 102608000 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 4\nu - 2 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{3} + 112\nu^{2} + 108955\nu + 3027200 ) / 4950 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} + 1868\nu^{2} - 429715\nu - 122936000 ) / 14850 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta _1 + 2 ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 15\beta_{3} + 5\beta_{2} + 81\beta _1 + 121282 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 3360\beta_{3} - 18680\beta_{2} + 127099\beta _1 + 39493878 ) / 4 \) 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
392.805
−132.367
7.42285
−265.861
−8.00000 27.0000 64.0000 −125.000 −216.000 −476.524 −512.000 729.000 1000.00
1.2 −8.00000 27.0000 64.0000 −125.000 −216.000 −317.559 −512.000 729.000 1000.00
1.3 −8.00000 27.0000 64.0000 −125.000 −216.000 1336.41 −512.000 729.000 1000.00
1.4 −8.00000 27.0000 64.0000 −125.000 −216.000 1808.67 −512.000 729.000 1000.00
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)
\(3\) \(-1\)
\(5\) \(1\)
\(13\) \(-1\)

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 390.8.a.p 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
390.8.a.p 4 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{4} - 2351T_{7}^{3} + 70998T_{7}^{2} + 1443473856T_{7} + 365770934496 \) acting on \(S_{8}^{\mathrm{new}}(\Gamma_0(390))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T + 8)^{4} \) Copy content Toggle raw display
$3$ \( (T - 27)^{4} \) Copy content Toggle raw display
$5$ \( (T + 125)^{4} \) Copy content Toggle raw display
$7$ \( T^{4} + \cdots + 365770934496 \) Copy content Toggle raw display
$11$ \( T^{4} + \cdots + 699584558400000 \) Copy content Toggle raw display
$13$ \( (T - 2197)^{4} \) Copy content Toggle raw display
$17$ \( T^{4} + \cdots - 10\!\cdots\!00 \) Copy content Toggle raw display
$19$ \( T^{4} + \cdots - 11\!\cdots\!00 \) Copy content Toggle raw display
$23$ \( T^{4} + \cdots - 95\!\cdots\!00 \) Copy content Toggle raw display
$29$ \( T^{4} + \cdots + 22\!\cdots\!40 \) Copy content Toggle raw display
$31$ \( T^{4} + \cdots + 51\!\cdots\!20 \) Copy content Toggle raw display
$37$ \( T^{4} + \cdots - 22\!\cdots\!44 \) Copy content Toggle raw display
$41$ \( T^{4} + \cdots + 93\!\cdots\!12 \) Copy content Toggle raw display
$43$ \( T^{4} + \cdots - 14\!\cdots\!84 \) Copy content Toggle raw display
$47$ \( T^{4} + \cdots - 41\!\cdots\!00 \) Copy content Toggle raw display
$53$ \( T^{4} + \cdots - 11\!\cdots\!40 \) Copy content Toggle raw display
$59$ \( T^{4} + \cdots + 13\!\cdots\!80 \) Copy content Toggle raw display
$61$ \( T^{4} + \cdots + 41\!\cdots\!40 \) Copy content Toggle raw display
$67$ \( T^{4} + \cdots - 14\!\cdots\!00 \) Copy content Toggle raw display
$71$ \( T^{4} + \cdots + 19\!\cdots\!40 \) Copy content Toggle raw display
$73$ \( T^{4} + \cdots - 35\!\cdots\!32 \) Copy content Toggle raw display
$79$ \( T^{4} + \cdots + 17\!\cdots\!12 \) Copy content Toggle raw display
$83$ \( T^{4} + \cdots + 48\!\cdots\!04 \) Copy content Toggle raw display
$89$ \( T^{4} + \cdots - 16\!\cdots\!56 \) Copy content Toggle raw display
$97$ \( T^{4} + \cdots - 14\!\cdots\!56 \) Copy content Toggle raw display
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