Properties

Label 32.4.b.a
Level $32$
Weight $4$
Character orbit 32.b
Analytic conductor $1.888$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [32,4,Mod(17,32)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(32, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("32.17");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 32 = 2^{5} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 32.b (of order \(2\), degree \(1\), not 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: \(1.88806112018\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-7}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: no (minimal twist has level 8)
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 \(\beta = 2\sqrt{-7}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta q^{3} - 2 \beta q^{5} + 8 q^{7} - q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \beta q^{3} - 2 \beta q^{5} + 8 q^{7} - q^{9} + 3 \beta q^{11} + 10 \beta q^{13} - 56 q^{15} - 14 q^{17} + 7 \beta q^{19} - 8 \beta q^{21} + 152 q^{23} + 13 q^{25} - 26 \beta q^{27} - 30 \beta q^{29} - 224 q^{31} + 84 q^{33} - 16 \beta q^{35} + 46 \beta q^{37} + 280 q^{39} - 70 q^{41} + 83 \beta q^{43} + 2 \beta q^{45} - 336 q^{47} - 279 q^{49} + 14 \beta q^{51} + 6 \beta q^{53} + 168 q^{55} + 196 q^{57} - 101 \beta q^{59} + 18 \beta q^{61} - 8 q^{63} + 560 q^{65} - 33 \beta q^{67} - 152 \beta q^{69} + 72 q^{71} - 294 q^{73} - 13 \beta q^{75} + 24 \beta q^{77} + 464 q^{79} - 755 q^{81} + 103 \beta q^{83} + 28 \beta q^{85} - 840 q^{87} + 266 q^{89} + 80 \beta q^{91} + 224 \beta q^{93} + 392 q^{95} + 994 q^{97} - 3 \beta q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 16 q^{7} - 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 16 q^{7} - 2 q^{9} - 112 q^{15} - 28 q^{17} + 304 q^{23} + 26 q^{25} - 448 q^{31} + 168 q^{33} + 560 q^{39} - 140 q^{41} - 672 q^{47} - 558 q^{49} + 336 q^{55} + 392 q^{57} - 16 q^{63} + 1120 q^{65} + 144 q^{71} - 588 q^{73} + 928 q^{79} - 1510 q^{81} - 1680 q^{87} + 532 q^{89} + 784 q^{95} + 1988 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/32\mathbb{Z}\right)^\times\).

\(n\) \(5\) \(31\)
\(\chi(n)\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
17.1
0.500000 + 1.32288i
0.500000 1.32288i
0 5.29150i 0 10.5830i 0 8.00000 0 −1.00000 0
17.2 0 5.29150i 0 10.5830i 0 8.00000 0 −1.00000 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
8.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 32.4.b.a 2
3.b odd 2 1 288.4.d.a 2
4.b odd 2 1 8.4.b.a 2
5.b even 2 1 800.4.d.a 2
5.c odd 4 2 800.4.f.a 4
8.b even 2 1 inner 32.4.b.a 2
8.d odd 2 1 8.4.b.a 2
12.b even 2 1 72.4.d.b 2
16.e even 4 2 256.4.a.j 2
16.f odd 4 2 256.4.a.l 2
20.d odd 2 1 200.4.d.a 2
20.e even 4 2 200.4.f.a 4
24.f even 2 1 72.4.d.b 2
24.h odd 2 1 288.4.d.a 2
40.e odd 2 1 200.4.d.a 2
40.f even 2 1 800.4.d.a 2
40.i odd 4 2 800.4.f.a 4
40.k even 4 2 200.4.f.a 4
48.i odd 4 2 2304.4.a.v 2
48.k even 4 2 2304.4.a.bn 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
8.4.b.a 2 4.b odd 2 1
8.4.b.a 2 8.d odd 2 1
32.4.b.a 2 1.a even 1 1 trivial
32.4.b.a 2 8.b even 2 1 inner
72.4.d.b 2 12.b even 2 1
72.4.d.b 2 24.f even 2 1
200.4.d.a 2 20.d odd 2 1
200.4.d.a 2 40.e odd 2 1
200.4.f.a 4 20.e even 4 2
200.4.f.a 4 40.k even 4 2
256.4.a.j 2 16.e even 4 2
256.4.a.l 2 16.f odd 4 2
288.4.d.a 2 3.b odd 2 1
288.4.d.a 2 24.h odd 2 1
800.4.d.a 2 5.b even 2 1
800.4.d.a 2 40.f even 2 1
800.4.f.a 4 5.c odd 4 2
800.4.f.a 4 40.i odd 4 2
2304.4.a.v 2 48.i odd 4 2
2304.4.a.bn 2 48.k even 4 2

Hecke kernels

This newform subspace is the entire newspace \(S_{4}^{\mathrm{new}}(32, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} + 28 \) Copy content Toggle raw display
$5$ \( T^{2} + 112 \) Copy content Toggle raw display
$7$ \( (T - 8)^{2} \) Copy content Toggle raw display
$11$ \( T^{2} + 252 \) Copy content Toggle raw display
$13$ \( T^{2} + 2800 \) Copy content Toggle raw display
$17$ \( (T + 14)^{2} \) Copy content Toggle raw display
$19$ \( T^{2} + 1372 \) Copy content Toggle raw display
$23$ \( (T - 152)^{2} \) Copy content Toggle raw display
$29$ \( T^{2} + 25200 \) Copy content Toggle raw display
$31$ \( (T + 224)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 59248 \) Copy content Toggle raw display
$41$ \( (T + 70)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 192892 \) Copy content Toggle raw display
$47$ \( (T + 336)^{2} \) Copy content Toggle raw display
$53$ \( T^{2} + 1008 \) Copy content Toggle raw display
$59$ \( T^{2} + 285628 \) Copy content Toggle raw display
$61$ \( T^{2} + 9072 \) Copy content Toggle raw display
$67$ \( T^{2} + 30492 \) Copy content Toggle raw display
$71$ \( (T - 72)^{2} \) Copy content Toggle raw display
$73$ \( (T + 294)^{2} \) Copy content Toggle raw display
$79$ \( (T - 464)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 297052 \) Copy content Toggle raw display
$89$ \( (T - 266)^{2} \) Copy content Toggle raw display
$97$ \( (T - 994)^{2} \) Copy content Toggle raw display
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