Properties

Label 448.4.i.f
Level $448$
Weight $4$
Character orbit 448.i
Analytic conductor $26.433$
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] = [448,4,Mod(65,448)]
 
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([0, 0, 2]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("448.65");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 448 = 2^{6} \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 448.i (of order \(3\), 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: \(2\)
Coefficient field: \(\Q(\sqrt{-3}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{9}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 7)
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-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 \(\zeta_{6}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - 7 \zeta_{6} + 7) q^{3} + 7 \zeta_{6} q^{5} + (14 \zeta_{6} + 7) q^{7} - 22 \zeta_{6} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + ( - 7 \zeta_{6} + 7) q^{3} + 7 \zeta_{6} q^{5} + (14 \zeta_{6} + 7) q^{7} - 22 \zeta_{6} q^{9} + (5 \zeta_{6} - 5) q^{11} + 14 q^{13} + 49 q^{15} + ( - 21 \zeta_{6} + 21) q^{17} + 49 \zeta_{6} q^{19} + ( - 49 \zeta_{6} + 147) q^{21} + 159 \zeta_{6} q^{23} + ( - 76 \zeta_{6} + 76) q^{25} + 35 q^{27} - 58 q^{29} + (147 \zeta_{6} - 147) q^{31} + 35 \zeta_{6} q^{33} + (147 \zeta_{6} - 98) q^{35} + 219 \zeta_{6} q^{37} + ( - 98 \zeta_{6} + 98) q^{39} + 350 q^{41} + 124 q^{43} + ( - 154 \zeta_{6} + 154) q^{45} - 525 \zeta_{6} q^{47} + (392 \zeta_{6} - 147) q^{49} - 147 \zeta_{6} q^{51} + ( - 303 \zeta_{6} + 303) q^{53} - 35 q^{55} + 343 q^{57} + (105 \zeta_{6} - 105) q^{59} - 413 \zeta_{6} q^{61} + ( - 462 \zeta_{6} + 308) q^{63} + 98 \zeta_{6} q^{65} + ( - 415 \zeta_{6} + 415) q^{67} + 1113 q^{69} - 432 q^{71} + ( - 1113 \zeta_{6} + 1113) q^{73} - 532 \zeta_{6} q^{75} + (35 \zeta_{6} - 105) q^{77} + 103 \zeta_{6} q^{79} + ( - 839 \zeta_{6} + 839) q^{81} - 1092 q^{83} + 147 q^{85} + (406 \zeta_{6} - 406) q^{87} + 329 \zeta_{6} q^{89} + (196 \zeta_{6} + 98) q^{91} + 1029 \zeta_{6} q^{93} + (343 \zeta_{6} - 343) q^{95} - 882 q^{97} + 110 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 7 q^{3} + 7 q^{5} + 28 q^{7} - 22 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 7 q^{3} + 7 q^{5} + 28 q^{7} - 22 q^{9} - 5 q^{11} + 28 q^{13} + 98 q^{15} + 21 q^{17} + 49 q^{19} + 245 q^{21} + 159 q^{23} + 76 q^{25} + 70 q^{27} - 116 q^{29} - 147 q^{31} + 35 q^{33} - 49 q^{35} + 219 q^{37} + 98 q^{39} + 700 q^{41} + 248 q^{43} + 154 q^{45} - 525 q^{47} + 98 q^{49} - 147 q^{51} + 303 q^{53} - 70 q^{55} + 686 q^{57} - 105 q^{59} - 413 q^{61} + 154 q^{63} + 98 q^{65} + 415 q^{67} + 2226 q^{69} - 864 q^{71} + 1113 q^{73} - 532 q^{75} - 175 q^{77} + 103 q^{79} + 839 q^{81} - 2184 q^{83} + 294 q^{85} - 406 q^{87} + 329 q^{89} + 392 q^{91} + 1029 q^{93} - 343 q^{95} - 1764 q^{97} + 220 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

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

\(n\) \(127\) \(129\) \(197\)
\(\chi(n)\) \(1\) \(-\zeta_{6}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
65.1
0.500000 0.866025i
0.500000 + 0.866025i
0 3.50000 + 6.06218i 0 3.50000 6.06218i 0 14.0000 12.1244i 0 −11.0000 + 19.0526i 0
193.1 0 3.50000 6.06218i 0 3.50000 + 6.06218i 0 14.0000 + 12.1244i 0 −11.0000 19.0526i 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.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 448.4.i.f 2
4.b odd 2 1 448.4.i.a 2
7.c even 3 1 inner 448.4.i.f 2
8.b even 2 1 7.4.c.a 2
8.d odd 2 1 112.4.i.c 2
24.h odd 2 1 63.4.e.b 2
28.g odd 6 1 448.4.i.a 2
40.f even 2 1 175.4.e.a 2
40.i odd 4 2 175.4.k.a 4
56.h odd 2 1 49.4.c.a 2
56.j odd 6 1 49.4.a.c 1
56.j odd 6 1 49.4.c.a 2
56.k odd 6 1 112.4.i.c 2
56.k odd 6 1 784.4.a.b 1
56.m even 6 1 784.4.a.r 1
56.p even 6 1 7.4.c.a 2
56.p even 6 1 49.4.a.d 1
168.i even 2 1 441.4.e.k 2
168.s odd 6 1 63.4.e.b 2
168.s odd 6 1 441.4.a.d 1
168.ba even 6 1 441.4.a.e 1
168.ba even 6 1 441.4.e.k 2
280.bf even 6 1 175.4.e.a 2
280.bf even 6 1 1225.4.a.c 1
280.bk odd 6 1 1225.4.a.d 1
280.bt odd 12 2 175.4.k.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
7.4.c.a 2 8.b even 2 1
7.4.c.a 2 56.p even 6 1
49.4.a.c 1 56.j odd 6 1
49.4.a.d 1 56.p even 6 1
49.4.c.a 2 56.h odd 2 1
49.4.c.a 2 56.j odd 6 1
63.4.e.b 2 24.h odd 2 1
63.4.e.b 2 168.s odd 6 1
112.4.i.c 2 8.d odd 2 1
112.4.i.c 2 56.k odd 6 1
175.4.e.a 2 40.f even 2 1
175.4.e.a 2 280.bf even 6 1
175.4.k.a 4 40.i odd 4 2
175.4.k.a 4 280.bt odd 12 2
441.4.a.d 1 168.s odd 6 1
441.4.a.e 1 168.ba even 6 1
441.4.e.k 2 168.i even 2 1
441.4.e.k 2 168.ba even 6 1
448.4.i.a 2 4.b odd 2 1
448.4.i.a 2 28.g odd 6 1
448.4.i.f 2 1.a even 1 1 trivial
448.4.i.f 2 7.c even 3 1 inner
784.4.a.b 1 56.k odd 6 1
784.4.a.r 1 56.m even 6 1
1225.4.a.c 1 280.bf even 6 1
1225.4.a.d 1 280.bk odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(448, [\chi])\):

\( T_{3}^{2} - 7T_{3} + 49 \) Copy content Toggle raw display
\( T_{11}^{2} + 5T_{11} + 25 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 7T + 49 \) Copy content Toggle raw display
$5$ \( T^{2} - 7T + 49 \) Copy content Toggle raw display
$7$ \( T^{2} - 28T + 343 \) Copy content Toggle raw display
$11$ \( T^{2} + 5T + 25 \) Copy content Toggle raw display
$13$ \( (T - 14)^{2} \) Copy content Toggle raw display
$17$ \( T^{2} - 21T + 441 \) Copy content Toggle raw display
$19$ \( T^{2} - 49T + 2401 \) Copy content Toggle raw display
$23$ \( T^{2} - 159T + 25281 \) Copy content Toggle raw display
$29$ \( (T + 58)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} + 147T + 21609 \) Copy content Toggle raw display
$37$ \( T^{2} - 219T + 47961 \) Copy content Toggle raw display
$41$ \( (T - 350)^{2} \) Copy content Toggle raw display
$43$ \( (T - 124)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} + 525T + 275625 \) Copy content Toggle raw display
$53$ \( T^{2} - 303T + 91809 \) Copy content Toggle raw display
$59$ \( T^{2} + 105T + 11025 \) Copy content Toggle raw display
$61$ \( T^{2} + 413T + 170569 \) Copy content Toggle raw display
$67$ \( T^{2} - 415T + 172225 \) Copy content Toggle raw display
$71$ \( (T + 432)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} - 1113 T + 1238769 \) Copy content Toggle raw display
$79$ \( T^{2} - 103T + 10609 \) Copy content Toggle raw display
$83$ \( (T + 1092)^{2} \) Copy content Toggle raw display
$89$ \( T^{2} - 329T + 108241 \) Copy content Toggle raw display
$97$ \( (T + 882)^{2} \) Copy content Toggle raw display
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