Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [2816,2,Mod(1407,2816)] 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("2816.1407"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(2816, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([1, 1, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 2816 = 2^{8} \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2816.g (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [12,0,8,0,0,0,0,0,4] 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: \(22.4858732092\)
Analytic rank: \(0\)
Dimension: \(12\)
Coefficient field: 12.0.653473922154496.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{12} - 4x^{10} + 13x^{8} - 28x^{6} + 52x^{4} - 64x^{2} + 64 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{11} \)
Twist minimal: no (minimal twist has level 352)
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{11}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_{8} + 1) q^{3} + \beta_{4} q^{5} - \beta_{11} q^{7} + (\beta_{9} - 2 \beta_{8} + 1) q^{9} + ( - \beta_{9} + \beta_{8} - \beta_{2}) q^{11} + (\beta_{11} + \beta_{5}) q^{13} + ( - \beta_{7} + \beta_1) q^{15}+ \cdots + (\beta_{9} + 2 \beta_{8} - \beta_{6} + \cdots - 7) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 12 q + 8 q^{3} + 4 q^{9} + 4 q^{11} + 4 q^{25} + 32 q^{27} - 16 q^{33} + 44 q^{49} - 72 q^{59} + 8 q^{67} + 56 q^{75} + 12 q^{81} - 96 q^{91} - 64 q^{97} - 76 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{12} - 4x^{10} + 13x^{8} - 28x^{6} + 52x^{4} - 64x^{2} + 64 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{10} - 6\nu^{8} + 9\nu^{6} - 14\nu^{4} ) / 32 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{9} + 2\nu^{7} - 9\nu^{5} + 10\nu^{3} - 16\nu ) / 8 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{11} + 4\nu^{9} - 5\nu^{7} + 12\nu^{5} - 12\nu^{3} + 16\nu ) / 16 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -\nu^{10} + 10\nu^{8} - 17\nu^{6} + 50\nu^{4} - 72\nu^{2} + 96 ) / 32 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -3\nu^{11} + 6\nu^{9} - 19\nu^{7} + 30\nu^{5} - 24\nu^{3} ) / 32 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{11} - 4\nu^{9} + 13\nu^{7} - 28\nu^{5} + 52\nu^{3} - 32\nu ) / 16 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 3\nu^{10} - 10\nu^{8} + 27\nu^{6} - 34\nu^{4} + 64\nu^{2} - 32 ) / 32 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -\nu^{10} + 4\nu^{8} - 13\nu^{6} + 28\nu^{4} - 36\nu^{2} + 48 ) / 16 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -\nu^{10} + 2\nu^{8} - 5\nu^{6} + 10\nu^{4} - 12\nu^{2} + 8 ) / 8 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( -\nu^{11} + 4\nu^{9} - 13\nu^{7} + 28\nu^{5} - 52\nu^{3} + 96\nu ) / 16 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( \nu^{11} - 6\nu^{9} + 17\nu^{7} - 30\nu^{5} + 40\nu^{3} - 48\nu ) / 16 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{10} + \beta_{6} ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{8} + \beta_{7} - \beta_{4} - 2\beta _1 + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -\beta_{11} + 3\beta_{6} + 2\beta_{5} - \beta_{3} - 2\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{9} + 2\beta_{8} + 3\beta_{7} - \beta _1 - 4 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2\beta_{11} - \beta_{10} + \beta_{6} + 4\beta_{5} - 2\beta_{3} - 8\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 4\beta_{9} - 5\beta_{8} + 3\beta_{7} + 5\beta_{4} + 2\beta _1 - 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 9\beta_{11} - 3\beta_{6} - 2\beta_{5} + 9\beta_{3} - 6\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( -\beta_{9} - 10\beta_{8} - 3\beta_{7} + 8\beta_{4} - 7\beta _1 + 4 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -10\beta_{11} - 7\beta_{10} - \beta_{6} - 20\beta_{5} + 26\beta_{3} + 8\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -28\beta_{9} + 13\beta_{8} - 3\beta_{7} + 3\beta_{4} - 10\beta _1 - 23 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( -49\beta_{11} - 24\beta_{10} + 3\beta_{6} - 46\beta_{5} - 17\beta_{3} - 10\beta_{2} ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2816\mathbb{Z}\right)^\times\).

\(n\) \(1025\) \(1541\) \(2047\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1407.1
−1.35489 + 0.405301i
1.35489 0.405301i
−1.35489 0.405301i
1.35489 + 0.405301i
−1.16947 0.795191i
1.16947 + 0.795191i
−1.16947 + 0.795191i
1.16947 0.795191i
0.892524 + 1.09700i
−0.892524 1.09700i
0.892524 1.09700i
−0.892524 + 1.09700i
0 −1.34292 0 2.48929i 0 −1.62121 0 −1.19656 0
1407.2 0 −1.34292 0 2.48929i 0 1.62121 0 −1.19656 0
1407.3 0 −1.34292 0 2.48929i 0 −1.62121 0 −1.19656 0
1407.4 0 −1.34292 0 2.48929i 0 1.62121 0 −1.19656 0
1407.5 0 0.529317 0 2.77846i 0 −3.18077 0 −2.71982 0
1407.6 0 0.529317 0 2.77846i 0 3.18077 0 −2.71982 0
1407.7 0 0.529317 0 2.77846i 0 −3.18077 0 −2.71982 0
1407.8 0 0.529317 0 2.77846i 0 3.18077 0 −2.71982 0
1407.9 0 2.81361 0 0.289169i 0 −4.38799 0 4.91638 0
1407.10 0 2.81361 0 0.289169i 0 4.38799 0 4.91638 0
1407.11 0 2.81361 0 0.289169i 0 −4.38799 0 4.91638 0
1407.12 0 2.81361 0 0.289169i 0 4.38799 0 4.91638 0
\(n\): e.g. 2-40 or 80-90
Embeddings: e.g. 1-3 or 1407.12
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
8.d odd 2 1 inner
11.b odd 2 1 inner
88.g even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2816.2.g.i 12
4.b odd 2 1 2816.2.g.d 12
8.b even 2 1 2816.2.g.d 12
8.d odd 2 1 inner 2816.2.g.i 12
11.b odd 2 1 inner 2816.2.g.i 12
16.e even 4 1 352.2.e.a 12
16.e even 4 1 704.2.e.d 12
16.f odd 4 1 352.2.e.a 12
16.f odd 4 1 704.2.e.d 12
44.c even 2 1 2816.2.g.d 12
48.i odd 4 1 3168.2.o.e 12
48.k even 4 1 3168.2.o.e 12
88.b odd 2 1 2816.2.g.d 12
88.g even 2 1 inner 2816.2.g.i 12
176.i even 4 1 352.2.e.a 12
176.i even 4 1 704.2.e.d 12
176.l odd 4 1 352.2.e.a 12
176.l odd 4 1 704.2.e.d 12
528.s odd 4 1 3168.2.o.e 12
528.x even 4 1 3168.2.o.e 12
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
352.2.e.a 12 16.e even 4 1
352.2.e.a 12 16.f odd 4 1
352.2.e.a 12 176.i even 4 1
352.2.e.a 12 176.l odd 4 1
704.2.e.d 12 16.e even 4 1
704.2.e.d 12 16.f odd 4 1
704.2.e.d 12 176.i even 4 1
704.2.e.d 12 176.l odd 4 1
2816.2.g.d 12 4.b odd 2 1
2816.2.g.d 12 8.b even 2 1
2816.2.g.d 12 44.c even 2 1
2816.2.g.d 12 88.b odd 2 1
2816.2.g.i 12 1.a even 1 1 trivial
2816.2.g.i 12 8.d odd 2 1 inner
2816.2.g.i 12 11.b odd 2 1 inner
2816.2.g.i 12 88.g even 2 1 inner
3168.2.o.e 12 48.i odd 4 1
3168.2.o.e 12 48.k even 4 1
3168.2.o.e 12 528.s odd 4 1
3168.2.o.e 12 528.x even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2816, [\chi])\):

\( T_{3}^{3} - 2T_{3}^{2} - 3T_{3} + 2 \) Copy content Toggle raw display
\( T_{7}^{6} - 32T_{7}^{4} + 272T_{7}^{2} - 512 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{12} \) Copy content Toggle raw display
$3$ \( (T^{3} - 2 T^{2} - 3 T + 2)^{4} \) Copy content Toggle raw display
$5$ \( (T^{6} + 14 T^{4} + 49 T^{2} + 4)^{2} \) Copy content Toggle raw display
$7$ \( (T^{6} - 32 T^{4} + \cdots - 512)^{2} \) Copy content Toggle raw display
$11$ \( (T^{6} - 2 T^{5} + \cdots + 1331)^{2} \) Copy content Toggle raw display
$13$ \( (T^{6} - 40 T^{4} + \cdots - 128)^{2} \) Copy content Toggle raw display
$17$ \( (T^{6} + 64 T^{4} + \cdots + 8192)^{2} \) Copy content Toggle raw display
$19$ \( (T^{6} + 104 T^{4} + \cdots + 15488)^{2} \) Copy content Toggle raw display
$23$ \( (T^{6} + 50 T^{4} + \cdots + 3844)^{2} \) Copy content Toggle raw display
$29$ \( (T^{6} - 136 T^{4} + \cdots - 32768)^{2} \) Copy content Toggle raw display
$31$ \( (T^{6} + 98 T^{4} + \cdots + 1156)^{2} \) Copy content Toggle raw display
$37$ \( (T^{6} + 14 T^{4} + 49 T^{2} + 4)^{2} \) Copy content Toggle raw display
$41$ \( (T^{6} + 160 T^{4} + \cdots + 147968)^{2} \) Copy content Toggle raw display
$43$ \( (T^{6} + 72 T^{4} + \cdots + 2048)^{2} \) Copy content Toggle raw display
$47$ \( (T^{6} + 156 T^{4} + \cdots + 118336)^{2} \) Copy content Toggle raw display
$53$ \( (T^{6} + 140 T^{4} + \cdots + 64)^{2} \) Copy content Toggle raw display
$59$ \( (T^{3} + 18 T^{2} + \cdots - 34)^{4} \) Copy content Toggle raw display
$61$ \( (T^{6} - 136 T^{4} + \cdots - 2048)^{2} \) Copy content Toggle raw display
$67$ \( (T^{3} - 2 T^{2} + \cdots + 362)^{4} \) Copy content Toggle raw display
$71$ \( (T^{6} + 242 T^{4} + \cdots + 24964)^{2} \) Copy content Toggle raw display
$73$ \( (T^{6} + 160 T^{4} + \cdots + 147968)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} - 128)^{6} \) Copy content Toggle raw display
$83$ \( (T^{6} + 264 T^{4} + \cdots + 131072)^{2} \) Copy content Toggle raw display
$89$ \( (T^{3} - 187 T - 358)^{4} \) Copy content Toggle raw display
$97$ \( (T^{3} + 16 T^{2} + \cdots - 722)^{4} \) Copy content Toggle raw display
show more
show less