Properties

Label 448.4.p.e
Level $448$
Weight $4$
Character orbit 448.p
Analytic conductor $26.433$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $4$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [448,4,Mod(255,448)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(448, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 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("448.255");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 448 = 2^{6} \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 448.p (of order \(6\), degree \(2\), 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: \(26.4328556826\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\Q(\sqrt{-3}, \sqrt{7})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 7x^{2} + 49 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 112)
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 basis \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_1 q^{3} + (5 \beta_{2} + 10) q^{5} + (5 \beta_{3} + 8 \beta_1) q^{7} - 20 \beta_{2} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_1 q^{3} + (5 \beta_{2} + 10) q^{5} + (5 \beta_{3} + 8 \beta_1) q^{7} - 20 \beta_{2} q^{9} + ( - 30 \beta_{3} - 15 \beta_1) q^{11} + ( - 60 \beta_{2} - 30) q^{13} + (5 \beta_{3} + 10 \beta_1) q^{15} + (5 \beta_{2} - 5) q^{17} + ( - 25 \beta_{3} - 25 \beta_1) q^{19} + (21 \beta_{2} - 35) q^{21} + (11 \beta_{3} - 11 \beta_1) q^{23} + ( - 50 \beta_{2} - 50) q^{25} - 47 \beta_{3} q^{27} + 168 q^{29} + 85 \beta_1 q^{31} + (105 \beta_{2} + 210) q^{33} + (65 \beta_{3} + 55 \beta_1) q^{35} + 245 \beta_{2} q^{37} + ( - 60 \beta_{3} - 30 \beta_1) q^{39} + (52 \beta_{2} + 26) q^{41} + (66 \beta_{3} + 132 \beta_1) q^{43} + ( - 100 \beta_{2} + 100) q^{45} + ( - 159 \beta_{3} - 159 \beta_1) q^{47} + ( - 112 \beta_{2} - 385) q^{49} + (5 \beta_{3} - 5 \beta_1) q^{51} + ( - 345 \beta_{2} - 345) q^{53} - 225 \beta_{3} q^{55} + 175 q^{57} + 165 \beta_1 q^{59} + ( - 229 \beta_{2} - 458) q^{61} + ( - 60 \beta_{3} + 100 \beta_1) q^{63} - 450 \beta_{2} q^{65} + ( - 194 \beta_{3} - 97 \beta_1) q^{67} + ( - 154 \beta_{2} - 77) q^{69} + ( - 10 \beta_{3} - 20 \beta_1) q^{71} + (555 \beta_{2} - 555) q^{73} + ( - 50 \beta_{3} - 50 \beta_1) q^{75} + (1365 \beta_{2} + 1155) q^{77} + ( - 45 \beta_{3} + 45 \beta_1) q^{79} + ( - 211 \beta_{2} - 211) q^{81} - 336 \beta_{3} q^{83} - 75 q^{85} + 168 \beta_1 q^{87} + (873 \beta_{2} + 1746) q^{89} + ( - 330 \beta_{3} + 60 \beta_1) q^{91} + 595 \beta_{2} q^{93} + ( - 250 \beta_{3} - 125 \beta_1) q^{95} + (500 \beta_{2} + 250) q^{97} + ( - 300 \beta_{3} - 600 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 30 q^{5} + 40 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + 30 q^{5} + 40 q^{9} - 30 q^{17} - 182 q^{21} - 100 q^{25} + 672 q^{29} + 630 q^{33} - 490 q^{37} + 600 q^{45} - 1316 q^{49} - 690 q^{53} + 700 q^{57} - 1374 q^{61} + 900 q^{65} - 3330 q^{73} + 1890 q^{77} - 422 q^{81} - 300 q^{85} + 5238 q^{89} - 1190 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 7x^{2} + 49 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{2} ) / 7 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} ) / 7 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( 7\beta_{2} \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 7\beta_{3} \) Copy content Toggle raw display

Character values

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

\(n\) \(127\) \(129\) \(197\)
\(\chi(n)\) \(-1\) \(-\beta_{2}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
255.1
−1.32288 + 2.29129i
1.32288 2.29129i
−1.32288 2.29129i
1.32288 + 2.29129i
0 −1.32288 + 2.29129i 0 7.50000 4.33013i 0 2.64575 + 18.3303i 0 10.0000 + 17.3205i 0
255.2 0 1.32288 2.29129i 0 7.50000 4.33013i 0 −2.64575 18.3303i 0 10.0000 + 17.3205i 0
383.1 0 −1.32288 2.29129i 0 7.50000 + 4.33013i 0 2.64575 18.3303i 0 10.0000 17.3205i 0
383.2 0 1.32288 + 2.29129i 0 7.50000 + 4.33013i 0 −2.64575 + 18.3303i 0 10.0000 17.3205i 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
4.b odd 2 1 inner
7.d odd 6 1 inner
28.f even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 448.4.p.e 4
4.b odd 2 1 inner 448.4.p.e 4
7.d odd 6 1 inner 448.4.p.e 4
8.b even 2 1 112.4.p.e 4
8.d odd 2 1 112.4.p.e 4
28.f even 6 1 inner 448.4.p.e 4
56.j odd 6 1 112.4.p.e 4
56.j odd 6 1 784.4.f.f 4
56.k odd 6 1 784.4.f.f 4
56.m even 6 1 112.4.p.e 4
56.m even 6 1 784.4.f.f 4
56.p even 6 1 784.4.f.f 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
112.4.p.e 4 8.b even 2 1
112.4.p.e 4 8.d odd 2 1
112.4.p.e 4 56.j odd 6 1
112.4.p.e 4 56.m even 6 1
448.4.p.e 4 1.a even 1 1 trivial
448.4.p.e 4 4.b odd 2 1 inner
448.4.p.e 4 7.d odd 6 1 inner
448.4.p.e 4 28.f even 6 1 inner
784.4.f.f 4 56.j odd 6 1
784.4.f.f 4 56.k odd 6 1
784.4.f.f 4 56.m even 6 1
784.4.f.f 4 56.p even 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{4} + 7T_{3}^{2} + 49 \) acting on \(S_{4}^{\mathrm{new}}(448, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 7T^{2} + 49 \) Copy content Toggle raw display
$5$ \( (T^{2} - 15 T + 75)^{2} \) Copy content Toggle raw display
$7$ \( T^{4} + 658 T^{2} + 117649 \) Copy content Toggle raw display
$11$ \( T^{4} - 4725 T^{2} + 22325625 \) Copy content Toggle raw display
$13$ \( (T^{2} + 2700)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} + 15 T + 75)^{2} \) Copy content Toggle raw display
$19$ \( T^{4} + 4375 T^{2} + 19140625 \) Copy content Toggle raw display
$23$ \( T^{4} - 2541 T^{2} + 6456681 \) Copy content Toggle raw display
$29$ \( (T - 168)^{4} \) Copy content Toggle raw display
$31$ \( T^{4} + \cdots + 2557830625 \) Copy content Toggle raw display
$37$ \( (T^{2} + 245 T + 60025)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} + 2028)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 91476)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + \cdots + 31317319089 \) Copy content Toggle raw display
$53$ \( (T^{2} + 345 T + 119025)^{2} \) Copy content Toggle raw display
$59$ \( T^{4} + \cdots + 36318830625 \) Copy content Toggle raw display
$61$ \( (T^{2} + 687 T + 157323)^{2} \) Copy content Toggle raw display
$67$ \( T^{4} + \cdots + 39041412921 \) Copy content Toggle raw display
$71$ \( (T^{2} + 2100)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} + 1665 T + 924075)^{2} \) Copy content Toggle raw display
$79$ \( T^{4} + \cdots + 1808375625 \) Copy content Toggle raw display
$83$ \( (T^{2} - 790272)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} - 2619 T + 2286387)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} + 187500)^{2} \) Copy content Toggle raw display
show more
show less