Properties

Label 2240.2.k.f
Level $2240$
Weight $2$
Character orbit 2240.k
Analytic conductor $17.886$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2240,2,Mod(1791,2240)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2240, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 0, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2240.1791");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2240 = 2^{6} \cdot 5 \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2240.k (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: \(17.8864900528\)
Analytic rank: \(0\)
Dimension: \(16\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 4 x^{15} - 6 x^{14} + 68 x^{13} - 126 x^{12} - 148 x^{11} + 1006 x^{10} - 1516 x^{9} + \cdots + 5956 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{11} \)
Twist minimal: no (minimal twist has level 1120)
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 a basis \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{9} q^{3} + \beta_{4} q^{5} - \beta_{11} q^{7} + (\beta_{9} - \beta_{8} - \beta_1 + 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{9} q^{3} + \beta_{4} q^{5} - \beta_{11} q^{7} + (\beta_{9} - \beta_{8} - \beta_1 + 1) q^{9} + ( - \beta_{14} + \beta_{11} + \cdots - \beta_{2}) q^{11}+ \cdots + ( - \beta_{15} - \beta_{14} + \cdots + \beta_{4}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 4 q^{7} + 16 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 4 q^{7} + 16 q^{9} - 8 q^{19} - 4 q^{21} - 16 q^{25} + 48 q^{27} - 8 q^{29} - 16 q^{37} - 8 q^{47} - 4 q^{49} - 16 q^{53} + 8 q^{55} + 16 q^{57} - 8 q^{59} - 60 q^{63} + 8 q^{65} + 8 q^{77} + 40 q^{81} + 64 q^{83} - 16 q^{87} - 64 q^{91} + 48 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 4 x^{15} - 6 x^{14} + 68 x^{13} - 126 x^{12} - 148 x^{11} + 1006 x^{10} - 1516 x^{9} + \cdots + 5956 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( - 12758377455 \nu^{15} - 17029973070 \nu^{14} + 255451555872 \nu^{13} + \cdots + 634026321716742 ) / 216025654874206 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 87\!\cdots\!74 \nu^{15} + \cdots - 34\!\cdots\!36 ) / 64\!\cdots\!44 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 13\!\cdots\!05 \nu^{15} + \cdots + 14\!\cdots\!08 ) / 64\!\cdots\!44 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 1210752049 \nu^{15} - 1110096336 \nu^{14} + 20403779147 \nu^{13} - 19050599618 \nu^{12} + \cdots - 17489786211320 ) / 4256018862188 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 3343558 \nu^{15} - 1238164 \nu^{14} + 52258753 \nu^{13} - 74255495 \nu^{12} + \cdots - 42814645170 ) / 3918178202 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 12\!\cdots\!73 \nu^{15} + \cdots + 33\!\cdots\!40 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 12\!\cdots\!95 \nu^{15} + \cdots - 90\!\cdots\!04 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 82\!\cdots\!25 \nu^{15} + \cdots - 39\!\cdots\!80 ) / 64\!\cdots\!44 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 23\!\cdots\!35 \nu^{15} + \cdots - 10\!\cdots\!60 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 25\!\cdots\!15 \nu^{15} + \cdots - 13\!\cdots\!72 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 40\!\cdots\!67 \nu^{15} + \cdots + 95\!\cdots\!72 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 20\!\cdots\!96 \nu^{15} + \cdots + 16\!\cdots\!32 ) / 64\!\cdots\!44 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 62\!\cdots\!45 \nu^{15} + \cdots + 32\!\cdots\!36 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( - 62\!\cdots\!81 \nu^{15} + \cdots + 41\!\cdots\!20 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 77\!\cdots\!49 \nu^{15} + \cdots - 31\!\cdots\!96 ) / 12\!\cdots\!88 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{13} + \beta_{10} + \beta_{9} + \beta_{7} ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( - \beta_{14} + \beta_{11} - \beta_{10} - \beta_{9} + 2 \beta_{8} + \beta_{7} + \beta_{6} + 2 \beta_{4} + \cdots + 4 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( - 3 \beta_{15} - 8 \beta_{14} + 9 \beta_{13} - \beta_{12} + 2 \beta_{11} + 11 \beta_{10} - 5 \beta_{8} + \cdots - 22 ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{15} - 5 \beta_{14} - 7 \beta_{13} - 3 \beta_{12} + 13 \beta_{11} - 12 \beta_{10} - 11 \beta_{9} + \cdots + 22 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 21 \beta_{15} - 46 \beta_{14} + 37 \beta_{13} + 13 \beta_{12} + 75 \beta_{10} + 24 \beta_{9} + \cdots - 182 ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 15 \beta_{15} - 82 \beta_{13} - 19 \beta_{12} + 98 \beta_{11} - 130 \beta_{10} - 43 \beta_{9} + \cdots + 214 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 81 \beta_{15} - 144 \beta_{14} + 263 \beta_{13} + 151 \beta_{12} - 174 \beta_{11} + 581 \beta_{10} + \cdots - 1544 ) / 4 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 179 \beta_{15} + 231 \beta_{14} - 757 \beta_{13} - 225 \beta_{12} + 653 \beta_{11} - 1232 \beta_{10} + \cdots + 2002 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( - 553 \beta_{15} + 46 \beta_{14} + 2417 \beta_{13} + 1181 \beta_{12} - 3100 \beta_{11} + 5499 \beta_{10} + \cdots - 14066 ) / 4 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 1161 \beta_{15} + 2128 \beta_{14} - 6430 \beta_{13} - 2141 \beta_{12} + 4718 \beta_{11} - 10312 \beta_{10} + \cdots + 18554 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( - 5851 \beta_{15} + 3292 \beta_{14} + 25033 \beta_{13} + 11801 \beta_{12} - 35758 \beta_{11} + \cdots - 121468 ) / 4 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( 8415 \beta_{15} + 11375 \beta_{14} - 49763 \beta_{13} - 17893 \beta_{12} + 41993 \beta_{11} + \cdots + 174470 ) / 2 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 47307 \beta_{15} + 26662 \beta_{14} + 261031 \beta_{13} + 116311 \beta_{12} - 346640 \beta_{11} + \cdots - 1043830 ) / 4 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 69001 \beta_{15} + 17414 \beta_{14} - 384702 \beta_{13} - 164929 \beta_{12} + 427592 \beta_{11} + \cdots + 1588582 ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 373861 \beta_{15} + 223888 \beta_{14} + 2459443 \beta_{13} + 1059647 \beta_{12} - 3146942 \beta_{11} + \cdots - 9147324 ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2240\mathbb{Z}\right)^\times\).

\(n\) \(897\) \(1471\) \(1541\) \(1921\)
\(\chi(n)\) \(1\) \(-1\) \(1\) \(-1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1791.1
−0.00830917 + 1.38001i
−0.00830917 1.38001i
2.23037 + 0.887196i
2.23037 0.887196i
−1.65334 + 0.722492i
−1.65334 0.722492i
1.23885 + 0.371381i
1.23885 0.371381i
−3.01485 + 0.0876273i
−3.01485 0.0876273i
0.715495 0.510550i
0.715495 + 0.510550i
1.40610 1.29043i
1.40610 + 1.29043i
1.08568 1.64772i
1.08568 + 1.64772i
0 −2.76002 0 1.00000i 0 −2.62068 + 0.363381i 0 4.61769 0
1791.2 0 −2.76002 0 1.00000i 0 −2.62068 0.363381i 0 4.61769 0
1791.3 0 −1.77439 0 1.00000i 0 0.829909 2.51222i 0 0.148464 0
1791.4 0 −1.77439 0 1.00000i 0 0.829909 + 2.51222i 0 0.148464 0
1791.5 0 −1.44498 0 1.00000i 0 2.48080 0.919594i 0 −0.912023 0
1791.6 0 −1.44498 0 1.00000i 0 2.48080 + 0.919594i 0 −0.912023 0
1791.7 0 −0.742762 0 1.00000i 0 −2.53467 0.758567i 0 −2.44831 0
1791.8 0 −0.742762 0 1.00000i 0 −2.53467 + 0.758567i 0 −2.44831 0
1791.9 0 −0.175255 0 1.00000i 0 0.684520 + 2.55567i 0 −2.96929 0
1791.10 0 −0.175255 0 1.00000i 0 0.684520 2.55567i 0 −2.96929 0
1791.11 0 1.02110 0 1.00000i 0 1.49445 + 2.18326i 0 −1.95735 0
1791.12 0 1.02110 0 1.00000i 0 1.49445 2.18326i 0 −1.95735 0
1791.13 0 2.58086 0 1.00000i 0 −0.319247 2.62642i 0 3.66083 0
1791.14 0 2.58086 0 1.00000i 0 −0.319247 + 2.62642i 0 3.66083 0
1791.15 0 3.29545 0 1.00000i 0 −2.01507 + 1.71449i 0 7.85998 0
1791.16 0 3.29545 0 1.00000i 0 −2.01507 1.71449i 0 7.85998 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1791.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
28.d even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2240.2.k.f 16
4.b odd 2 1 2240.2.k.g 16
7.b odd 2 1 2240.2.k.g 16
8.b even 2 1 1120.2.k.a 16
8.d odd 2 1 1120.2.k.b yes 16
28.d even 2 1 inner 2240.2.k.f 16
56.e even 2 1 1120.2.k.a 16
56.h odd 2 1 1120.2.k.b yes 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1120.2.k.a 16 8.b even 2 1
1120.2.k.a 16 56.e even 2 1
1120.2.k.b yes 16 8.d odd 2 1
1120.2.k.b yes 16 56.h odd 2 1
2240.2.k.f 16 1.a even 1 1 trivial
2240.2.k.f 16 28.d even 2 1 inner
2240.2.k.g 16 4.b odd 2 1
2240.2.k.g 16 7.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2240, [\chi])\):

\( T_{3}^{8} - 16T_{3}^{6} - 8T_{3}^{5} + 69T_{3}^{4} + 64T_{3}^{3} - 50T_{3}^{2} - 56T_{3} - 8 \) Copy content Toggle raw display
\( T_{19}^{8} + 4T_{19}^{7} - 60T_{19}^{6} - 256T_{19}^{5} + 384T_{19}^{4} + 1792T_{19}^{3} - 1152T_{19}^{2} - 3072T_{19} + 2048 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} - 16 T^{6} - 8 T^{5} + \cdots - 8)^{2} \) Copy content Toggle raw display
$5$ \( (T^{2} + 1)^{8} \) Copy content Toggle raw display
$7$ \( T^{16} + 4 T^{15} + \cdots + 5764801 \) Copy content Toggle raw display
$11$ \( T^{16} + 100 T^{14} + \cdots + 4096 \) Copy content Toggle raw display
$13$ \( T^{16} + 100 T^{14} + \cdots + 20736 \) Copy content Toggle raw display
$17$ \( T^{16} + \cdots + 131974144 \) Copy content Toggle raw display
$19$ \( (T^{8} + 4 T^{7} + \cdots + 2048)^{2} \) Copy content Toggle raw display
$23$ \( T^{16} + 116 T^{14} + \cdots + 4734976 \) Copy content Toggle raw display
$29$ \( (T^{8} + 4 T^{7} + \cdots + 272)^{2} \) Copy content Toggle raw display
$31$ \( (T^{8} - 128 T^{6} + \cdots + 32768)^{2} \) Copy content Toggle raw display
$37$ \( (T^{8} + 8 T^{7} + \cdots + 122624)^{2} \) Copy content Toggle raw display
$41$ \( T^{16} + \cdots + 53557067776 \) Copy content Toggle raw display
$43$ \( T^{16} + \cdots + 122466402304 \) Copy content Toggle raw display
$47$ \( (T^{8} + 4 T^{7} + \cdots - 231568)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} + 8 T^{7} + \cdots - 665856)^{2} \) Copy content Toggle raw display
$59$ \( (T^{8} + 4 T^{7} + \cdots - 672768)^{2} \) Copy content Toggle raw display
$61$ \( T^{16} + \cdots + 647532301582336 \) Copy content Toggle raw display
$67$ \( T^{16} + 436 T^{14} + \cdots + 16384 \) Copy content Toggle raw display
$71$ \( T^{16} + \cdots + 22419997720576 \) Copy content Toggle raw display
$73$ \( T^{16} + \cdots + 113154195456 \) Copy content Toggle raw display
$79$ \( T^{16} + \cdots + 1196606464 \) Copy content Toggle raw display
$83$ \( (T^{8} - 32 T^{7} + \cdots - 12271744)^{2} \) Copy content Toggle raw display
$89$ \( T^{16} + \cdots + 718886928384 \) Copy content Toggle raw display
$97$ \( T^{16} + \cdots + 335984794092544 \) Copy content Toggle raw display
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