Properties

Label 211.5.b.a
Level $211$
Weight $5$
Character orbit 211.b
Self dual yes
Analytic conductor $21.811$
Analytic rank $0$
Dimension $3$
CM discriminant -211
Inner twists $2$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [211,5,Mod(210,211)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(211, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1]))
 
N = Newforms(chi, 5, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("211.210");
 
S:= CuspForms(chi, 5);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 211 \)
Weight: \( k \) \(=\) \( 5 \)
Character orbit: \([\chi]\) \(=\) 211.b (of order \(2\), degree \(1\), 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: yes
Analytic conductor: \(21.8110622107\)
Analytic rank: \(0\)
Dimension: \(3\)
Coefficient field: 3.3.5697.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - 15x - 17 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 3 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

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

\(f(q)\) \(=\) \( q + 16 q^{4} + (4 \beta_{2} - \beta_1) q^{5} + 81 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 16 q^{4} + (4 \beta_{2} - \beta_1) q^{5} + 81 q^{9} + (17 \beta_{2} + 21 \beta_1) q^{11} + ( - 13 \beta_{2} - 44 \beta_1) q^{13} + 256 q^{16} + ( - 53 \beta_{2} + 36 \beta_1) q^{19} + (64 \beta_{2} - 16 \beta_1) q^{20} + ( - 87 \beta_{2} + 77 \beta_1 + 625) q^{25} + 1296 q^{36} + ( - 183 \beta_{2} - 259 \beta_1) q^{37} + (212 \beta_{2} - 329 \beta_1) q^{43} + (272 \beta_{2} + 336 \beta_1) q^{44} + (324 \beta_{2} - 81 \beta_1) q^{45} + ( - 53 \beta_{2} + 596 \beta_1) q^{47} + 2401 q^{49} + ( - 208 \beta_{2} - 704 \beta_1) q^{52} + 5407 q^{53} + ( - 92 \beta_{2} + 807 \beta_1 + 4151) q^{55} + 1687 q^{59} + 4096 q^{64} + ( - 237 \beta_{2} - 1148 \beta_1 - 1889) q^{65} + ( - 828 \beta_{2} - 329 \beta_1) q^{71} - 6433 q^{73} + ( - 848 \beta_{2} + 576 \beta_1) q^{76} + (337 \beta_{2} + 1701 \beta_1) q^{79} + (1024 \beta_{2} - 256 \beta_1) q^{80} + 6561 q^{81} - 11753 q^{83} + (1403 \beta_{2} - 588 \beta_1 - 17609) q^{95} + (1377 \beta_{2} + 1701 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q + 48 q^{4} + 243 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 3 q + 48 q^{4} + 243 q^{9} + 768 q^{16} + 1875 q^{25} + 3888 q^{36} + 7203 q^{49} + 16221 q^{53} + 12453 q^{55} + 5061 q^{59} + 12288 q^{64} - 5667 q^{65} - 19299 q^{73} + 19683 q^{81} - 35259 q^{83} - 52827 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - 15x - 17 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu^{2} - \nu - 10 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( -\nu^{2} + 4\nu + 10 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} + \beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{2} + 4\beta _1 + 30 ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/211\mathbb{Z}\right)^\times\).

\(n\) \(2\)
\(\chi(n)\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
210.1
−3.07865
−1.26984
4.34849
0 0 16.0000 −49.7276 0 0 0 81.0000 0
210.2 0 0 16.0000 20.3502 0 0 0 81.0000 0
210.3 0 0 16.0000 29.3774 0 0 0 81.0000 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
211.b odd 2 1 CM by \(\Q(\sqrt{-211}) \)

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 211.5.b.a 3
211.b odd 2 1 CM 211.5.b.a 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
211.5.b.a 3 1.a even 1 1 trivial
211.5.b.a 3 211.b odd 2 1 CM

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2} \) acting on \(S_{5}^{\mathrm{new}}(211, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} \) Copy content Toggle raw display
$3$ \( T^{3} \) Copy content Toggle raw display
$5$ \( T^{3} - 1875T + 29729 \) Copy content Toggle raw display
$7$ \( T^{3} \) Copy content Toggle raw display
$11$ \( T^{3} - 43923 T - 3284647 \) Copy content Toggle raw display
$13$ \( T^{3} - 85683 T + 3428593 \) Copy content Toggle raw display
$17$ \( T^{3} \) Copy content Toggle raw display
$19$ \( T^{3} - 390963 T - 88347287 \) Copy content Toggle raw display
$23$ \( T^{3} \) Copy content Toggle raw display
$29$ \( T^{3} \) Copy content Toggle raw display
$31$ \( T^{3} \) Copy content Toggle raw display
$37$ \( T^{3} + \cdots + 5063307793 \) Copy content Toggle raw display
$41$ \( T^{3} \) Copy content Toggle raw display
$43$ \( T^{3} + \cdots + 3031864873 \) Copy content Toggle raw display
$47$ \( T^{3} + \cdots + 21534665033 \) Copy content Toggle raw display
$53$ \( (T - 5407)^{3} \) Copy content Toggle raw display
$59$ \( (T - 1687)^{3} \) Copy content Toggle raw display
$61$ \( T^{3} \) Copy content Toggle raw display
$67$ \( T^{3} \) Copy content Toggle raw display
$71$ \( T^{3} + \cdots - 30235260967 \) Copy content Toggle raw display
$73$ \( (T + 6433)^{3} \) Copy content Toggle raw display
$79$ \( T^{3} + \cdots + 43754379433 \) Copy content Toggle raw display
$83$ \( (T + 11753)^{3} \) Copy content Toggle raw display
$89$ \( T^{3} \) Copy content Toggle raw display
$97$ \( T^{3} \) Copy content Toggle raw display
show more
show less