Properties

Label 55.10.e.a
Level $55$
Weight $10$
Character orbit 55.e
Analytic conductor $28.327$
Analytic rank $0$
Dimension $4$
CM discriminant -11
Inner twists $4$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [55,10,Mod(32,55)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(55, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([1, 2]))
 
N = Newforms(chi, 10, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("55.32");
 
S:= CuspForms(chi, 10);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 55 = 5 \cdot 11 \)
Weight: \( k \) \(=\) \( 10 \)
Character orbit: \([\chi]\) \(=\) 55.e (of order \(4\), degree \(2\), 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: \(28.3269709890\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(i)\)
Coefficient field: \(\Q(i, \sqrt{11})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - 5x^{2} + 9 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{4}]$

$q$-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.

\(f(q)\) \(=\) \( q + (37 \beta_{3} - 37 \beta_{2} + \cdots - 68) q^{3}+ \cdots + ( - 10064 \beta_{3} - 19683 \beta_1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (37 \beta_{3} - 37 \beta_{2} + \cdots - 68) q^{3}+ \cdots + (288178803 \beta_{3} + 1620817264 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 272 q^{3}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 272 q^{3} - 139264 q^{12} + 772792 q^{15} - 1048576 q^{16} + 940032 q^{20} - 5364792 q^{23} + 6127052 q^{25} + 16384192 q^{27} + 23835548 q^{33} + 40310784 q^{36} + 31592596 q^{37} - 36137988 q^{45} + 22332456 q^{47} + 71303168 q^{48} + 144667188 q^{53} + 256393192 q^{55} + 267825152 q^{60} + 606721856 q^{67} - 1711614672 q^{71} - 1011452128 q^{75} - 2906818268 q^{81} - 2746773504 q^{92} + 2514546936 q^{93} - 186106684 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - 5x^{2} + 9 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{3} - 2\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{3} + 8\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( 2\nu^{2} - 5 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} + \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} + 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{2} + 4\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/55\mathbb{Z}\right)^\times\).

\(n\) \(12\) \(46\)
\(\chi(n)\) \(\beta_{1}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
32.1
1.65831 + 0.500000i
−1.65831 + 0.500000i
1.65831 0.500000i
−1.65831 0.500000i
0 −190.715 + 190.715i 512.000i −1320.02 459.000i 0 0 0 53061.5i 0
32.2 0 54.7151 54.7151i 512.000i 1320.02 459.000i 0 0 0 13695.5i 0
43.1 0 −190.715 190.715i 512.000i −1320.02 + 459.000i 0 0 0 53061.5i 0
43.2 0 54.7151 + 54.7151i 512.000i 1320.02 + 459.000i 0 0 0 13695.5i 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
11.b odd 2 1 CM by \(\Q(\sqrt{-11}) \)
5.c odd 4 1 inner
55.e even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 55.10.e.a 4
5.c odd 4 1 inner 55.10.e.a 4
11.b odd 2 1 CM 55.10.e.a 4
55.e even 4 1 inner 55.10.e.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
55.10.e.a 4 1.a even 1 1 trivial
55.10.e.a 4 5.c odd 4 1 inner
55.10.e.a 4 11.b odd 2 1 CM
55.10.e.a 4 55.e even 4 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2} \) acting on \(S_{10}^{\mathrm{new}}(55, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 272 T^{3} + \cdots + 435556900 \) Copy content Toggle raw display
$5$ \( T^{4} + \cdots + 3814697265625 \) Copy content Toggle raw display
$7$ \( T^{4} \) Copy content Toggle raw display
$11$ \( (T^{2} - 2357947691)^{2} \) Copy content Toggle raw display
$13$ \( T^{4} \) Copy content Toggle raw display
$17$ \( T^{4} \) Copy content Toggle raw display
$19$ \( T^{4} \) Copy content Toggle raw display
$23$ \( T^{4} + \cdots + 12\!\cdots\!00 \) Copy content Toggle raw display
$29$ \( T^{4} \) Copy content Toggle raw display
$31$ \( (T^{2} - 26242389490284)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} + \cdots + 10\!\cdots\!00 \) Copy content Toggle raw display
$41$ \( T^{4} \) Copy content Toggle raw display
$43$ \( T^{4} \) Copy content Toggle raw display
$47$ \( T^{4} + \cdots + 44\!\cdots\!00 \) Copy content Toggle raw display
$53$ \( T^{4} + \cdots + 18\!\cdots\!00 \) Copy content Toggle raw display
$59$ \( (T^{2} + 29\!\cdots\!56)^{2} \) Copy content Toggle raw display
$61$ \( T^{4} \) Copy content Toggle raw display
$67$ \( T^{4} + \cdots + 14\!\cdots\!00 \) Copy content Toggle raw display
$71$ \( (T + 427903668)^{4} \) Copy content Toggle raw display
$73$ \( T^{4} \) Copy content Toggle raw display
$79$ \( T^{4} \) Copy content Toggle raw display
$83$ \( T^{4} \) Copy content Toggle raw display
$89$ \( (T^{2} + 13\!\cdots\!36)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + \cdots + 22\!\cdots\!00 \) Copy content Toggle raw display
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