Properties

Label 2775.1.bg.d
Level $2775$
Weight $1$
Character orbit 2775.bg
Analytic conductor $1.385$
Analytic rank $0$
Dimension $16$
Projective image $D_{20}$
CM discriminant -111
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2775,1,Mod(221,2775)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2775, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([5, 6, 5]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2775.221");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2775 = 3 \cdot 5^{2} \cdot 37 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2775.bg (of order \(10\), degree \(4\), 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: \(1.38490541006\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(4\) over \(\Q(\zeta_{10})\)
Coefficient field: \(\Q(\zeta_{40})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - x^{12} + x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{20}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{20} - \cdots)\)

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q + (\zeta_{40}^{7} + \zeta_{40}) q^{2} - \zeta_{40}^{8} q^{3} + (\zeta_{40}^{14} + \cdots + \zeta_{40}^{2}) q^{4} + \cdots + \zeta_{40}^{16} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{40}^{7} + \zeta_{40}) q^{2} - \zeta_{40}^{8} q^{3} + (\zeta_{40}^{14} + \cdots + \zeta_{40}^{2}) q^{4} + \cdots + ( - \zeta_{40}^{7} - \zeta_{40}) q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 4 q^{3} - 4 q^{4} - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 4 q^{3} - 4 q^{4} - 4 q^{9} + 4 q^{10} + 4 q^{12} + 4 q^{16} + 4 q^{27} + 16 q^{30} - 8 q^{34} - 4 q^{36} + 4 q^{37} - 20 q^{40} - 12 q^{46} - 4 q^{48} - 16 q^{49} - 8 q^{58} + 4 q^{64} - 4 q^{81} + 4 q^{85} + 4 q^{90}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2775\mathbb{Z}\right)^\times\).

\(n\) \(76\) \(926\) \(1777\)
\(\chi(n)\) \(-1\) \(-1\) \(\zeta_{40}^{8}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
221.1
−0.453990 + 0.891007i
0.891007 + 0.453990i
−0.891007 0.453990i
0.453990 0.891007i
−0.453990 0.891007i
0.891007 0.453990i
−0.891007 + 0.453990i
0.453990 + 0.891007i
−0.987688 + 0.156434i
0.156434 + 0.987688i
−0.156434 0.987688i
0.987688 0.156434i
−0.987688 0.156434i
0.156434 0.987688i
−0.156434 + 0.987688i
0.987688 + 0.156434i
−0.610425 + 1.87869i 0.809017 + 0.587785i −2.34786 1.70582i −0.891007 0.453990i −1.59811 + 1.16110i 0 3.03979 2.20854i 0.309017 + 0.951057i 1.39680 1.39680i
221.2 −0.0966818 + 0.297556i 0.809017 + 0.587785i 0.729825 + 0.530249i 0.453990 0.891007i −0.253116 + 0.183900i 0 −0.481456 + 0.349798i 0.309017 + 0.951057i 0.221232 + 0.221232i
221.3 0.0966818 0.297556i 0.809017 + 0.587785i 0.729825 + 0.530249i −0.453990 + 0.891007i 0.253116 0.183900i 0 0.481456 0.349798i 0.309017 + 0.951057i 0.221232 + 0.221232i
221.4 0.610425 1.87869i 0.809017 + 0.587785i −2.34786 1.70582i 0.891007 + 0.453990i 1.59811 1.16110i 0 −3.03979 + 2.20854i 0.309017 + 0.951057i 1.39680 1.39680i
1331.1 −0.610425 1.87869i 0.809017 0.587785i −2.34786 + 1.70582i −0.891007 + 0.453990i −1.59811 1.16110i 0 3.03979 + 2.20854i 0.309017 0.951057i 1.39680 + 1.39680i
1331.2 −0.0966818 0.297556i 0.809017 0.587785i 0.729825 0.530249i 0.453990 + 0.891007i −0.253116 0.183900i 0 −0.481456 0.349798i 0.309017 0.951057i 0.221232 0.221232i
1331.3 0.0966818 + 0.297556i 0.809017 0.587785i 0.729825 0.530249i −0.453990 0.891007i 0.253116 + 0.183900i 0 0.481456 + 0.349798i 0.309017 0.951057i 0.221232 0.221232i
1331.4 0.610425 + 1.87869i 0.809017 0.587785i −2.34786 + 1.70582i 0.891007 0.453990i 1.59811 + 1.16110i 0 −3.03979 2.20854i 0.309017 0.951057i 1.39680 + 1.39680i
1886.1 −1.44168 + 1.04744i −0.309017 + 0.951057i 0.672288 2.06909i 0.156434 + 0.987688i −0.550672 1.69480i 0 0.647354 + 1.99235i −0.809017 0.587785i −1.26007 1.26007i
1886.2 −0.734572 + 0.533698i −0.309017 + 0.951057i −0.0542543 + 0.166977i −0.987688 + 0.156434i −0.280582 0.863541i 0 −0.329843 1.01515i −0.809017 0.587785i 0.642040 0.642040i
1886.3 0.734572 0.533698i −0.309017 + 0.951057i −0.0542543 + 0.166977i 0.987688 0.156434i 0.280582 + 0.863541i 0 0.329843 + 1.01515i −0.809017 0.587785i 0.642040 0.642040i
1886.4 1.44168 1.04744i −0.309017 + 0.951057i 0.672288 2.06909i −0.156434 0.987688i 0.550672 + 1.69480i 0 −0.647354 1.99235i −0.809017 0.587785i −1.26007 1.26007i
2441.1 −1.44168 1.04744i −0.309017 0.951057i 0.672288 + 2.06909i 0.156434 0.987688i −0.550672 + 1.69480i 0 0.647354 1.99235i −0.809017 + 0.587785i −1.26007 + 1.26007i
2441.2 −0.734572 0.533698i −0.309017 0.951057i −0.0542543 0.166977i −0.987688 0.156434i −0.280582 + 0.863541i 0 −0.329843 + 1.01515i −0.809017 + 0.587785i 0.642040 + 0.642040i
2441.3 0.734572 + 0.533698i −0.309017 0.951057i −0.0542543 0.166977i 0.987688 + 0.156434i 0.280582 0.863541i 0 0.329843 1.01515i −0.809017 + 0.587785i 0.642040 + 0.642040i
2441.4 1.44168 + 1.04744i −0.309017 0.951057i 0.672288 + 2.06909i −0.156434 + 0.987688i 0.550672 1.69480i 0 −0.647354 + 1.99235i −0.809017 + 0.587785i −1.26007 + 1.26007i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 221.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
111.d odd 2 1 CM by \(\Q(\sqrt{-111}) \)
3.b odd 2 1 inner
25.d even 5 1 inner
37.b even 2 1 inner
75.j odd 10 1 inner
925.r even 10 1 inner
2775.bg odd 10 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2775.1.bg.d 16
3.b odd 2 1 inner 2775.1.bg.d 16
25.d even 5 1 inner 2775.1.bg.d 16
37.b even 2 1 inner 2775.1.bg.d 16
75.j odd 10 1 inner 2775.1.bg.d 16
111.d odd 2 1 CM 2775.1.bg.d 16
925.r even 10 1 inner 2775.1.bg.d 16
2775.bg odd 10 1 inner 2775.1.bg.d 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2775.1.bg.d 16 1.a even 1 1 trivial
2775.1.bg.d 16 3.b odd 2 1 inner
2775.1.bg.d 16 25.d even 5 1 inner
2775.1.bg.d 16 37.b even 2 1 inner
2775.1.bg.d 16 75.j odd 10 1 inner
2775.1.bg.d 16 111.d odd 2 1 CM
2775.1.bg.d 16 925.r even 10 1 inner
2775.1.bg.d 16 2775.bg odd 10 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{16} + 4T_{2}^{14} + 12T_{2}^{12} + 32T_{2}^{10} + 150T_{2}^{8} - 32T_{2}^{6} + 97T_{2}^{4} + 16T_{2}^{2} + 1 \) acting on \(S_{1}^{\mathrm{new}}(2775, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} + 4 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( (T^{4} - T^{3} + T^{2} + \cdots + 1)^{4} \) Copy content Toggle raw display
$5$ \( T^{16} - T^{12} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( T^{16} \) Copy content Toggle raw display
$11$ \( T^{16} \) Copy content Toggle raw display
$13$ \( T^{16} \) Copy content Toggle raw display
$17$ \( (T^{8} + 2 T^{6} + 4 T^{4} + \cdots + 16)^{2} \) Copy content Toggle raw display
$19$ \( T^{16} \) Copy content Toggle raw display
$23$ \( T^{16} + 4 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$29$ \( T^{16} + 4 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{16} \) Copy content Toggle raw display
$37$ \( (T^{4} - T^{3} + T^{2} + \cdots + 1)^{4} \) Copy content Toggle raw display
$41$ \( T^{16} \) Copy content Toggle raw display
$43$ \( T^{16} \) Copy content Toggle raw display
$47$ \( T^{16} \) Copy content Toggle raw display
$53$ \( T^{16} \) Copy content Toggle raw display
$59$ \( T^{16} + 4 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$61$ \( T^{16} \) Copy content Toggle raw display
$67$ \( (T^{8} + 10 T^{4} + \cdots + 25)^{2} \) Copy content Toggle raw display
$71$ \( T^{16} \) Copy content Toggle raw display
$73$ \( (T^{8} + 10 T^{4} + \cdots + 25)^{2} \) Copy content Toggle raw display
$79$ \( T^{16} \) Copy content Toggle raw display
$83$ \( T^{16} \) Copy content Toggle raw display
$89$ \( T^{16} + 4 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$97$ \( T^{16} \) Copy content Toggle raw display
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