Properties

Label 50.6.b.a
Level $50$
Weight $6$
Character orbit 50.b
Analytic conductor $8.019$
Analytic rank $0$
Dimension $2$
Inner twists $2$

Related objects

Downloads

Learn more

Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [50,6,Mod(49,50)] 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("50.49"); S:= CuspForms(chi, 6); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(50, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([1])) N = Newforms(chi, 6, names="a")
 
Level: \( N \) \(=\) \( 50 = 2 \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 6 \)
Character orbit: \([\chi]\) \(=\) 50.b (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [2,0,0,-32,0,-192] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(6)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(8.01919099065\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 10)
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 \(\beta = 2i\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 \beta q^{2} + 12 \beta q^{3} - 16 q^{4} - 96 q^{6} + 86 \beta q^{7} - 32 \beta q^{8} - 333 q^{9} + 132 q^{11} - 192 \beta q^{12} - 473 \beta q^{13} - 688 q^{14} + 256 q^{16} + 111 \beta q^{17} - 666 \beta q^{18} + \cdots - 43956 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 32 q^{4} - 192 q^{6} - 666 q^{9} + 264 q^{11} - 1376 q^{14} + 512 q^{16} - 1000 q^{19} - 8256 q^{21} + 3072 q^{24} + 7568 q^{26} - 4380 q^{29} + 4624 q^{31} - 1776 q^{34} + 10656 q^{36} + 45408 q^{39}+ \cdots - 87912 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/50\mathbb{Z}\right)^\times\).

\(n\) \(27\)
\(\chi(n)\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
49.1
1.00000i
1.00000i
4.00000i 24.0000i −16.0000 0 −96.0000 172.000i 64.0000i −333.000 0
49.2 4.00000i 24.0000i −16.0000 0 −96.0000 172.000i 64.0000i −333.000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 50.6.b.a 2
3.b odd 2 1 450.6.c.h 2
4.b odd 2 1 400.6.c.b 2
5.b even 2 1 inner 50.6.b.a 2
5.c odd 4 1 10.6.a.b 1
5.c odd 4 1 50.6.a.d 1
15.d odd 2 1 450.6.c.h 2
15.e even 4 1 90.6.a.d 1
15.e even 4 1 450.6.a.l 1
20.d odd 2 1 400.6.c.b 2
20.e even 4 1 80.6.a.a 1
20.e even 4 1 400.6.a.n 1
35.f even 4 1 490.6.a.a 1
40.i odd 4 1 320.6.a.b 1
40.k even 4 1 320.6.a.o 1
60.l odd 4 1 720.6.a.j 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
10.6.a.b 1 5.c odd 4 1
50.6.a.d 1 5.c odd 4 1
50.6.b.a 2 1.a even 1 1 trivial
50.6.b.a 2 5.b even 2 1 inner
80.6.a.a 1 20.e even 4 1
90.6.a.d 1 15.e even 4 1
320.6.a.b 1 40.i odd 4 1
320.6.a.o 1 40.k even 4 1
400.6.a.n 1 20.e even 4 1
400.6.c.b 2 4.b odd 2 1
400.6.c.b 2 20.d odd 2 1
450.6.a.l 1 15.e even 4 1
450.6.c.h 2 3.b odd 2 1
450.6.c.h 2 15.d odd 2 1
490.6.a.a 1 35.f even 4 1
720.6.a.j 1 60.l odd 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{2} + 576 \) acting on \(S_{6}^{\mathrm{new}}(50, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + 16 \) Copy content Toggle raw display
$3$ \( T^{2} + 576 \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} + 29584 \) Copy content Toggle raw display
$11$ \( (T - 132)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 894916 \) Copy content Toggle raw display
$17$ \( T^{2} + 49284 \) Copy content Toggle raw display
$19$ \( (T + 500)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 12702096 \) Copy content Toggle raw display
$29$ \( (T + 2190)^{2} \) Copy content Toggle raw display
$31$ \( (T - 2312)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 126382564 \) Copy content Toggle raw display
$41$ \( (T - 1242)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 425349376 \) Copy content Toggle raw display
$47$ \( T^{2} + 43401744 \) Copy content Toggle raw display
$53$ \( T^{2} + 443776356 \) Copy content Toggle raw display
$59$ \( (T + 7980)^{2} \) Copy content Toggle raw display
$61$ \( (T - 16622)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} + 3268864 \) Copy content Toggle raw display
$71$ \( (T + 24528)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 419184676 \) Copy content Toggle raw display
$79$ \( (T - 46240)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 2660083776 \) Copy content Toggle raw display
$89$ \( (T - 110310)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 6143737924 \) Copy content Toggle raw display
show more
show less