Properties

Label 1456.2.j.a
Level $1456$
Weight $2$
Character orbit 1456.j
Analytic conductor $11.626$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1456,2,Mod(1119,1456)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1456, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 1, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1456.1119");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1456 = 2^{4} \cdot 7 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1456.j (of order \(2\), degree \(1\), 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: \(11.6262185343\)
Analytic rank: \(0\)
Dimension: \(16\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 20 x^{13} - 9 x^{12} + 42 x^{11} + 200 x^{10} - 26 x^{9} - 305 x^{8} - 922 x^{7} + 3202 x^{6} + \cdots + 1444 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{7} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{10} q^{3} + \beta_{14} q^{5} + (\beta_{13} - \beta_{2}) q^{7} + ( - \beta_{4} + 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{10} q^{3} + \beta_{14} q^{5} + (\beta_{13} - \beta_{2}) q^{7} + ( - \beta_{4} + 1) q^{9} + ( - \beta_{12} + \beta_{11} + \cdots - \beta_{2}) q^{11}+ \cdots + ( - \beta_{12} + 3 \beta_{11} + \cdots - 3 \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 16 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 16 q^{9} + 8 q^{21} + 4 q^{25} + 4 q^{29} + 4 q^{49} - 36 q^{53} + 32 q^{57} + 4 q^{65} - 20 q^{77} + 16 q^{81} - 56 q^{85} - 24 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 20 x^{13} - 9 x^{12} + 42 x^{11} + 200 x^{10} - 26 x^{9} - 305 x^{8} - 922 x^{7} + 3202 x^{6} + \cdots + 1444 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( - 330884890797308 \nu^{15} + 333264059208032 \nu^{14} + \cdots - 21\!\cdots\!96 ) / 43\!\cdots\!71 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 27\!\cdots\!46 \nu^{15} + \cdots - 17\!\cdots\!90 ) / 34\!\cdots\!68 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 596302979571489 \nu^{15} + \cdots - 16\!\cdots\!10 ) / 43\!\cdots\!71 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 808613637925352 \nu^{15} + \cdots + 69\!\cdots\!96 ) / 43\!\cdots\!71 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 13\!\cdots\!64 \nu^{15} - 569667636501451 \nu^{14} + \cdots + 36\!\cdots\!24 ) / 43\!\cdots\!71 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 8028712719625 \nu^{15} - 3301751612019 \nu^{14} - 2073103843696 \nu^{13} + \cdots + 25\!\cdots\!92 ) / 13\!\cdots\!86 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 25\!\cdots\!47 \nu^{15} + \cdots + 75\!\cdots\!50 ) / 34\!\cdots\!68 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 40\!\cdots\!08 \nu^{15} + \cdots - 12\!\cdots\!80 ) / 43\!\cdots\!71 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( - 19\!\cdots\!61 \nu^{15} + \cdots + 76\!\cdots\!44 ) / 17\!\cdots\!84 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( - 21\!\cdots\!13 \nu^{15} + \cdots + 57\!\cdots\!72 ) / 17\!\cdots\!84 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 44\!\cdots\!85 \nu^{15} + \cdots + 17\!\cdots\!40 ) / 34\!\cdots\!68 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 61\!\cdots\!13 \nu^{15} + \cdots + 23\!\cdots\!72 ) / 34\!\cdots\!68 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 64\!\cdots\!29 \nu^{15} + \cdots + 17\!\cdots\!88 ) / 34\!\cdots\!68 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 95\!\cdots\!67 \nu^{15} + \cdots - 29\!\cdots\!16 ) / 43\!\cdots\!71 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( - 92\!\cdots\!35 \nu^{15} + \cdots + 24\!\cdots\!92 ) / 34\!\cdots\!68 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{15} + \beta_{13} + \beta_{12} - \beta_{11} + \beta_{10} + \beta_{8} + \beta_{4} ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{14} + \beta_{10} - 2\beta_{9} - \beta_{8} - 2\beta_{7} + 2\beta_{6} - \beta_{5} + 2\beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( - \beta_{15} + 6 \beta_{14} - 3 \beta_{13} + 3 \beta_{12} + \beta_{11} + 7 \beta_{10} - 6 \beta_{9} + \cdots + 16 ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{12} - 9\beta_{11} + 6\beta_{9} - 4\beta_{7} + 5\beta_{4} + 4\beta_{3} - 4\beta_{2} - 6\beta _1 + 4 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 5 \beta_{15} + 18 \beta_{14} - 19 \beta_{13} - 19 \beta_{12} + 5 \beta_{11} + 37 \beta_{10} - 66 \beta_{9} + \cdots - 56 ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( - 12 \beta_{15} + 51 \beta_{14} - 8 \beta_{13} + 37 \beta_{10} + 2 \beta_{9} - 67 \beta_{8} + \cdots - 2 \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 81 \beta_{15} + 130 \beta_{14} + 65 \beta_{13} - 65 \beta_{12} - 81 \beta_{11} - 343 \beta_{10} + \cdots + 368 ) / 4 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( - 51 \beta_{12} - 67 \beta_{11} + 19 \beta_{9} - 208 \beta_{7} - 13 \beta_{4} - 83 \beta_{3} + \cdots - 250 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( \beta_{15} + 1190 \beta_{14} + 75 \beta_{13} + 75 \beta_{12} + \beta_{11} - 39 \beta_{10} - 470 \beta_{9} + \cdots - 1928 ) / 4 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 380 \beta_{15} + 1533 \beta_{14} + 562 \beta_{13} - 2571 \beta_{10} + 2568 \beta_{9} + \cdots - 2568 \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 4981 \beta_{15} - 3036 \beta_{14} + 755 \beta_{13} - 755 \beta_{12} - 4981 \beta_{11} - 14369 \beta_{10} + \cdots - 6972 ) / 4 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( 67 \beta_{12} + 861 \beta_{11} - 3746 \beta_{9} - 4124 \beta_{7} - 11299 \beta_{4} - 14416 \beta_{3} + \cdots - 32124 ) / 2 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 11889 \beta_{15} + 32308 \beta_{14} + 6845 \beta_{13} + 6845 \beta_{12} + 11889 \beta_{11} + \cdots - 67204 ) / 4 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 46950 \beta_{15} - 28377 \beta_{14} + 10472 \beta_{13} - 147929 \beta_{10} + 89504 \beta_{9} + \cdots - 89504 \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 16149 \beta_{15} - 323516 \beta_{14} + 13845 \beta_{13} - 13845 \beta_{12} - 16149 \beta_{11} + \cdots - 774388 ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1456\mathbb{Z}\right)^\times\).

\(n\) \(561\) \(911\) \(1093\) \(1249\)
\(\chi(n)\) \(1\) \(-1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1119.1
−2.01498 0.824242i
−2.01498 + 0.824242i
1.47303 + 1.22455i
1.47303 1.22455i
0.247483 0.537458i
0.247483 + 0.537458i
−0.615409 + 2.42121i
−0.615409 2.42121i
2.42121 0.615409i
2.42121 + 0.615409i
0.537458 0.247483i
0.537458 + 0.247483i
−1.22455 1.47303i
−1.22455 + 1.47303i
−0.824242 2.01498i
−0.824242 + 2.01498i
0 −3.11102 0 0.739531i 0 −0.953027 2.46814i 0 6.67845 0
1119.2 0 −3.11102 0 0.739531i 0 −0.953027 + 2.46814i 0 6.67845 0
1119.3 0 −1.87164 0 0.330638i 0 2.52093 + 0.803059i 0 0.503039 0
1119.4 0 −1.87164 0 0.330638i 0 2.52093 0.803059i 0 0.503039 0
1119.5 0 −1.55888 0 3.64989i 0 −2.63133 + 0.275914i 0 −0.569882 0
1119.6 0 −1.55888 0 3.64989i 0 −2.63133 0.275914i 0 −0.569882 0
1119.7 0 −0.623212 0 2.24100i 0 0.559261 + 2.58597i 0 −2.61161 0
1119.8 0 −0.623212 0 2.24100i 0 0.559261 2.58597i 0 −2.61161 0
1119.9 0 0.623212 0 2.24100i 0 −0.559261 2.58597i 0 −2.61161 0
1119.10 0 0.623212 0 2.24100i 0 −0.559261 + 2.58597i 0 −2.61161 0
1119.11 0 1.55888 0 3.64989i 0 2.63133 0.275914i 0 −0.569882 0
1119.12 0 1.55888 0 3.64989i 0 2.63133 + 0.275914i 0 −0.569882 0
1119.13 0 1.87164 0 0.330638i 0 −2.52093 0.803059i 0 0.503039 0
1119.14 0 1.87164 0 0.330638i 0 −2.52093 + 0.803059i 0 0.503039 0
1119.15 0 3.11102 0 0.739531i 0 0.953027 + 2.46814i 0 6.67845 0
1119.16 0 3.11102 0 0.739531i 0 0.953027 2.46814i 0 6.67845 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1119.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
7.b odd 2 1 inner
28.d even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1456.2.j.a 16
4.b odd 2 1 inner 1456.2.j.a 16
7.b odd 2 1 inner 1456.2.j.a 16
28.d even 2 1 inner 1456.2.j.a 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1456.2.j.a 16 1.a even 1 1 trivial
1456.2.j.a 16 4.b odd 2 1 inner
1456.2.j.a 16 7.b odd 2 1 inner
1456.2.j.a 16 28.d even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{8} - 16T_{3}^{6} + 72T_{3}^{4} - 108T_{3}^{2} + 32 \) acting on \(S_{2}^{\mathrm{new}}(1456, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} - 16 T^{6} + \cdots + 32)^{2} \) Copy content Toggle raw display
$5$ \( (T^{8} + 19 T^{6} + 79 T^{4} + \cdots + 4)^{2} \) Copy content Toggle raw display
$7$ \( T^{16} - 2 T^{14} + \cdots + 5764801 \) Copy content Toggle raw display
$11$ \( (T^{8} + 50 T^{6} + 580 T^{4} + \cdots + 8)^{2} \) Copy content Toggle raw display
$13$ \( (T^{2} + 1)^{8} \) Copy content Toggle raw display
$17$ \( (T^{8} + 68 T^{6} + \cdots + 44944)^{2} \) Copy content Toggle raw display
$19$ \( (T^{8} - 39 T^{6} + \cdots + 1250)^{2} \) Copy content Toggle raw display
$23$ \( (T^{8} + 57 T^{6} + \cdots + 200)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} - T^{3} - 21 T^{2} + \cdots - 16)^{4} \) Copy content Toggle raw display
$31$ \( (T^{8} - 131 T^{6} + \cdots + 458882)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} - 38 T^{2} + \cdots + 316)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} + 4)^{8} \) Copy content Toggle raw display
$43$ \( (T^{8} + 217 T^{6} + \cdots + 1248200)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} - 159 T^{6} + \cdots + 1140050)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 9 T^{3} + \cdots - 1046)^{4} \) Copy content Toggle raw display
$59$ \( (T^{8} - 286 T^{6} + \cdots + 15814688)^{2} \) Copy content Toggle raw display
$61$ \( (T^{8} + 192 T^{6} + \cdots + 102400)^{2} \) Copy content Toggle raw display
$67$ \( (T^{8} + 346 T^{6} + \cdots + 22044800)^{2} \) Copy content Toggle raw display
$71$ \( (T^{8} + 122 T^{6} + \cdots + 6728)^{2} \) Copy content Toggle raw display
$73$ \( (T^{8} + 311 T^{6} + \cdots + 538756)^{2} \) Copy content Toggle raw display
$79$ \( (T^{8} + 369 T^{6} + \cdots + 35011712)^{2} \) Copy content Toggle raw display
$83$ \( (T^{8} - 491 T^{6} + \cdots + 25647122)^{2} \) Copy content Toggle raw display
$89$ \( (T^{8} + 415 T^{6} + \cdots + 96786244)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} + 335 T^{6} + \cdots + 4813636)^{2} \) Copy content Toggle raw display
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