Properties

Label 448.5.c.b
Level $448$
Weight $5$
Character orbit 448.c
Self dual yes
Analytic conductor $46.310$
Analytic rank $0$
Dimension $1$
CM discriminant -7
Inner twists $2$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [448,5,Mod(321,448)] 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("448.321"); S:= CuspForms(chi, 5); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(448, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 1])) N = Newforms(chi, 5, names="a")
 
Level: \( N \) \(=\) \( 448 = 2^{6} \cdot 7 \)
Weight: \( k \) \(=\) \( 5 \)
Character orbit: \([\chi]\) \(=\) 448.c (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [1,0,0,0,0,0,49,0,81] 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: yes
Analytic conductor: \(46.3097434616\)
Analytic rank: \(0\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 7)
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

$q$-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)
 
\(f(q)\) \(=\) \( q + 49 q^{7} + 81 q^{9} + 206 q^{11} - 734 q^{23} + 625 q^{25} - 1234 q^{29} + 1294 q^{37} + 334 q^{43} + 2401 q^{49} + 5582 q^{53} + 3969 q^{63} - 4946 q^{67} + 2914 q^{71} + 10094 q^{77} - 3646 q^{79}+ \cdots + 16686 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/448\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(129\) \(197\)
\(\chi(n)\) \(1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
321.1
0
0 0 0 0 0 49.0000 0 81.0000 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
7.b odd 2 1 CM by \(\Q(\sqrt{-7}) \)

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 448.5.c.b 1
4.b odd 2 1 448.5.c.a 1
7.b odd 2 1 CM 448.5.c.b 1
8.b even 2 1 7.5.b.a 1
8.d odd 2 1 112.5.c.a 1
24.f even 2 1 1008.5.f.a 1
24.h odd 2 1 63.5.d.a 1
28.d even 2 1 448.5.c.a 1
40.f even 2 1 175.5.d.a 1
40.i odd 4 2 175.5.c.a 2
56.e even 2 1 112.5.c.a 1
56.h odd 2 1 7.5.b.a 1
56.j odd 6 2 49.5.d.a 2
56.p even 6 2 49.5.d.a 2
168.e odd 2 1 1008.5.f.a 1
168.i even 2 1 63.5.d.a 1
280.c odd 2 1 175.5.d.a 1
280.s even 4 2 175.5.c.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
7.5.b.a 1 8.b even 2 1
7.5.b.a 1 56.h odd 2 1
49.5.d.a 2 56.j odd 6 2
49.5.d.a 2 56.p even 6 2
63.5.d.a 1 24.h odd 2 1
63.5.d.a 1 168.i even 2 1
112.5.c.a 1 8.d odd 2 1
112.5.c.a 1 56.e even 2 1
175.5.c.a 2 40.i odd 4 2
175.5.c.a 2 280.s even 4 2
175.5.d.a 1 40.f even 2 1
175.5.d.a 1 280.c odd 2 1
448.5.c.a 1 4.b odd 2 1
448.5.c.a 1 28.d even 2 1
448.5.c.b 1 1.a even 1 1 trivial
448.5.c.b 1 7.b odd 2 1 CM
1008.5.f.a 1 24.f even 2 1
1008.5.f.a 1 168.e odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{5}^{\mathrm{new}}(448, [\chi])\):

\( T_{3} \) Copy content Toggle raw display
\( T_{11} - 206 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T \) Copy content Toggle raw display
$3$ \( T \) Copy content Toggle raw display
$5$ \( T \) Copy content Toggle raw display
$7$ \( T - 49 \) Copy content Toggle raw display
$11$ \( T - 206 \) Copy content Toggle raw display
$13$ \( T \) Copy content Toggle raw display
$17$ \( T \) Copy content Toggle raw display
$19$ \( T \) Copy content Toggle raw display
$23$ \( T + 734 \) Copy content Toggle raw display
$29$ \( T + 1234 \) Copy content Toggle raw display
$31$ \( T \) Copy content Toggle raw display
$37$ \( T - 1294 \) Copy content Toggle raw display
$41$ \( T \) Copy content Toggle raw display
$43$ \( T - 334 \) Copy content Toggle raw display
$47$ \( T \) Copy content Toggle raw display
$53$ \( T - 5582 \) Copy content Toggle raw display
$59$ \( T \) Copy content Toggle raw display
$61$ \( T \) Copy content Toggle raw display
$67$ \( T + 4946 \) Copy content Toggle raw display
$71$ \( T - 2914 \) Copy content Toggle raw display
$73$ \( T \) Copy content Toggle raw display
$79$ \( T + 3646 \) Copy content Toggle raw display
$83$ \( T \) Copy content Toggle raw display
$89$ \( T \) Copy content Toggle raw display
$97$ \( T \) Copy content Toggle raw display
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