Properties

Label 272.2.v.b
Level $272$
Weight $2$
Character orbit 272.v
Analytic conductor $2.172$
Analytic rank $0$
Dimension $4$
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] = [272,2,Mod(49,272)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(272, base_ring=CyclotomicField(8))
 
chi = DirichletCharacter(H, H._module([0, 0, 3]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("272.49");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 272 = 2^{4} \cdot 17 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 272.v (of order \(8\), degree \(4\), 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: \(2.17193093498\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{8})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 34)
Sato-Tate group: $\mathrm{SU}(2)[C_{8}]$

$q$-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 primitive root of unity \(\zeta_{8}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\zeta_{8}^{3} - \zeta_{8}^{2}) q^{3} + (2 \zeta_{8} - 2) q^{5} + (2 \zeta_{8}^{2} + 2 \zeta_{8}) q^{7} + ( - \zeta_{8}^{2} - \zeta_{8} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{8}^{3} - \zeta_{8}^{2}) q^{3} + (2 \zeta_{8} - 2) q^{5} + (2 \zeta_{8}^{2} + 2 \zeta_{8}) q^{7} + ( - \zeta_{8}^{2} - \zeta_{8} - 1) q^{9} + (\zeta_{8}^{3} - 2 \zeta_{8}^{2} + \cdots - 1) q^{11}+ \cdots + ( - \zeta_{8}^{3} + \zeta_{8}^{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 8 q^{5} - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 8 q^{5} - 4 q^{9} - 4 q^{11} - 8 q^{15} - 8 q^{19} + 16 q^{23} + 16 q^{25} + 12 q^{27} - 16 q^{33} - 8 q^{37} + 16 q^{41} - 12 q^{43} + 8 q^{45} - 16 q^{49} - 16 q^{51} + 8 q^{53} + 8 q^{57} + 4 q^{59} + 16 q^{61} + 8 q^{63} - 16 q^{65} + 24 q^{67} + 8 q^{71} + 28 q^{75} + 8 q^{77} + 8 q^{79} - 12 q^{83} - 8 q^{85} - 8 q^{87} - 32 q^{91} - 8 q^{93} - 12 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/272\mathbb{Z}\right)^\times\).

\(n\) \(69\) \(239\) \(241\)
\(\chi(n)\) \(1\) \(1\) \(\zeta_{8}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
49.1
−0.707107 + 0.707107i
0.707107 + 0.707107i
−0.707107 0.707107i
0.707107 0.707107i
0 0.707107 + 1.70711i 0 −3.41421 + 1.41421i 0 −1.41421 0.585786i 0 −0.292893 + 0.292893i 0
145.1 0 −0.707107 0.292893i 0 −0.585786 + 1.41421i 0 1.41421 + 3.41421i 0 −1.70711 1.70711i 0
161.1 0 0.707107 1.70711i 0 −3.41421 1.41421i 0 −1.41421 + 0.585786i 0 −0.292893 0.292893i 0
257.1 0 −0.707107 + 0.292893i 0 −0.585786 1.41421i 0 1.41421 3.41421i 0 −1.70711 + 1.70711i 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
17.d even 8 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 272.2.v.b 4
4.b odd 2 1 34.2.d.a 4
12.b even 2 1 306.2.l.c 4
17.d even 8 1 inner 272.2.v.b 4
17.e odd 16 2 4624.2.a.bn 4
20.d odd 2 1 850.2.l.a 4
20.e even 4 1 850.2.o.a 4
20.e even 4 1 850.2.o.b 4
68.d odd 2 1 578.2.d.b 4
68.f odd 4 1 578.2.d.a 4
68.f odd 4 1 578.2.d.c 4
68.g odd 8 1 34.2.d.a 4
68.g odd 8 1 578.2.d.a 4
68.g odd 8 1 578.2.d.b 4
68.g odd 8 1 578.2.d.c 4
68.i even 16 2 578.2.a.i 4
68.i even 16 2 578.2.b.d 4
68.i even 16 4 578.2.c.f 8
204.p even 8 1 306.2.l.c 4
204.t odd 16 2 5202.2.a.bw 4
340.w even 8 1 850.2.o.b 4
340.z even 8 1 850.2.o.a 4
340.ba odd 8 1 850.2.l.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
34.2.d.a 4 4.b odd 2 1
34.2.d.a 4 68.g odd 8 1
272.2.v.b 4 1.a even 1 1 trivial
272.2.v.b 4 17.d even 8 1 inner
306.2.l.c 4 12.b even 2 1
306.2.l.c 4 204.p even 8 1
578.2.a.i 4 68.i even 16 2
578.2.b.d 4 68.i even 16 2
578.2.c.f 8 68.i even 16 4
578.2.d.a 4 68.f odd 4 1
578.2.d.a 4 68.g odd 8 1
578.2.d.b 4 68.d odd 2 1
578.2.d.b 4 68.g odd 8 1
578.2.d.c 4 68.f odd 4 1
578.2.d.c 4 68.g odd 8 1
850.2.l.a 4 20.d odd 2 1
850.2.l.a 4 340.ba odd 8 1
850.2.o.a 4 20.e even 4 1
850.2.o.a 4 340.z even 8 1
850.2.o.b 4 20.e even 4 1
850.2.o.b 4 340.w even 8 1
4624.2.a.bn 4 17.e odd 16 2
5202.2.a.bw 4 204.t odd 16 2

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(272, [\chi])\):

\( T_{3}^{4} + 2T_{3}^{2} + 4T_{3} + 2 \) Copy content Toggle raw display
\( T_{5}^{4} + 8T_{5}^{3} + 24T_{5}^{2} + 32T_{5} + 32 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 2 T^{2} + \cdots + 2 \) Copy content Toggle raw display
$5$ \( T^{4} + 8 T^{3} + \cdots + 32 \) Copy content Toggle raw display
$7$ \( T^{4} + 8 T^{2} + \cdots + 32 \) Copy content Toggle raw display
$11$ \( T^{4} + 4 T^{3} + \cdots + 2 \) Copy content Toggle raw display
$13$ \( T^{4} + 24T^{2} + 16 \) Copy content Toggle raw display
$17$ \( T^{4} + 16T^{2} + 289 \) Copy content Toggle raw display
$19$ \( T^{4} + 8 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$23$ \( T^{4} - 16 T^{3} + \cdots + 512 \) Copy content Toggle raw display
$29$ \( T^{4} + 8 T^{2} + \cdots + 32 \) Copy content Toggle raw display
$31$ \( T^{4} + 8 T^{2} + \cdots + 32 \) Copy content Toggle raw display
$37$ \( T^{4} + 8 T^{3} + \cdots + 128 \) Copy content Toggle raw display
$41$ \( T^{4} - 16 T^{3} + \cdots + 4802 \) Copy content Toggle raw display
$43$ \( T^{4} + 12 T^{3} + \cdots + 324 \) Copy content Toggle raw display
$47$ \( T^{4} + 96T^{2} + 256 \) Copy content Toggle raw display
$53$ \( T^{4} - 8 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$59$ \( T^{4} - 4 T^{3} + \cdots + 4 \) Copy content Toggle raw display
$61$ \( T^{4} - 16 T^{3} + \cdots + 512 \) Copy content Toggle raw display
$67$ \( (T^{2} - 12 T + 34)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} - 8 T^{3} + \cdots + 128 \) Copy content Toggle raw display
$73$ \( T^{4} + 98 T^{2} + \cdots + 4802 \) Copy content Toggle raw display
$79$ \( T^{4} - 8 T^{3} + \cdots + 128 \) Copy content Toggle raw display
$83$ \( T^{4} + 12 T^{3} + \cdots + 196 \) Copy content Toggle raw display
$89$ \( T^{4} + 228T^{2} + 196 \) Copy content Toggle raw display
$97$ \( T^{4} + 12 T^{3} + \cdots + 162 \) Copy content Toggle raw display
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