Properties

Label 211.3.b.a
Level $211$
Weight $3$
Character orbit 211.b
Self dual yes
Analytic conductor $5.749$
Analytic rank $0$
Dimension $3$
CM discriminant -211
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [211,3,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, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("211.210");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 211 \)
Weight: \( k \) \(=\) \( 3 \)
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: \(5.74933357800\)
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: \( 1 \)
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.

\(f(q)\) \(=\) \( q + 4 q^{4} + (\beta_{2} + 2 \beta_1) q^{5} + 9 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 4 q^{4} + (\beta_{2} + 2 \beta_1) q^{5} + 9 q^{9} + ( - \beta_{2} - 5 \beta_1) q^{11} + ( - 4 \beta_{2} - \beta_1) q^{13} + 16 q^{16} + (4 \beta_{2} - 5 \beta_1) q^{19} + (4 \beta_{2} + 8 \beta_1) q^{20} + ( - 5 \beta_{2} + 7 \beta_1 + 25) q^{25} + 36 q^{36} + (11 \beta_{2} - \beta_1) q^{37} + ( - 11 \beta_{2} - 14 \beta_1) q^{43} + ( - 4 \beta_{2} - 20 \beta_1) q^{44} + (9 \beta_{2} + 18 \beta_1) q^{45} + ( - 4 \beta_{2} + 19 \beta_1) q^{47} + 49 q^{49} + ( - 16 \beta_{2} - 4 \beta_1) q^{52} - 105 q^{53} + (5 \beta_{2} - 22 \beta_1 - 101) q^{55} - 93 q^{59} + 64 q^{64} + (20 \beta_{2} + 7 \beta_1 - 81) q^{65} + ( - 19 \beta_{2} + 10 \beta_1) q^{71} - 65 q^{73} + (16 \beta_{2} - 20 \beta_1) q^{76} + ( - \beta_{2} + 35 \beta_1) q^{79} + (16 \beta_{2} + 32 \beta_1) q^{80} + 81 q^{81} - 45 q^{83} + ( - 20 \beta_{2} - 37 \beta_1 - 21) q^{95} + ( - 9 \beta_{2} - 45 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q + 12 q^{4} + 27 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 3 q + 12 q^{4} + 27 q^{9} + 48 q^{16} + 75 q^{25} + 108 q^{36} + 147 q^{49} - 315 q^{53} - 303 q^{55} - 279 q^{59} + 192 q^{64} - 243 q^{65} - 195 q^{73} + 243 q^{81} - 135 q^{83} - 63 q^{95}+O(q^{100}) \) 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

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} - 2\nu - 10 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} + 2\beta _1 + 10 \) 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
−1.26984
−3.07865
4.34849
0 0 4.00000 −8.38750 0 0 0 9.00000 0
210.2 0 0 4.00000 −0.521895 0 0 0 9.00000 0
210.3 0 0 4.00000 8.90940 0 0 0 9.00000 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 211.3.b.a 3
211.b odd 2 1 CM 211.3.b.a 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
211.3.b.a 3 1.a even 1 1 trivial
211.3.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 \(S_{3}^{\mathrm{new}}(211, [\chi])\). 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
$5$ \( T^{3} - 75T - 39 \) Copy content Toggle raw display
$7$ \( T^{3} \) Copy content Toggle raw display
$11$ \( T^{3} - 363T + 2613 \) Copy content Toggle raw display
$13$ \( T^{3} - 507T - 2495 \) Copy content Toggle raw display
$17$ \( T^{3} \) Copy content Toggle raw display
$19$ \( T^{3} - 1083T - 13507 \) 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
$37$ \( T^{3} - 4107T - 8255 \) Copy content Toggle raw display
$41$ \( T^{3} \) Copy content Toggle raw display
$43$ \( T^{3} - 5547T - 98035 \) Copy content Toggle raw display
$47$ \( T^{3} - 6627T - 4875 \) Copy content Toggle raw display
$53$ \( (T + 105)^{3} \) Copy content Toggle raw display
$59$ \( (T + 93)^{3} \) Copy content Toggle raw display
$61$ \( T^{3} \) Copy content Toggle raw display
$67$ \( T^{3} \) Copy content Toggle raw display
$71$ \( T^{3} - 15123 T + 535197 \) Copy content Toggle raw display
$73$ \( (T + 65)^{3} \) Copy content Toggle raw display
$79$ \( T^{3} - 18723 T - 665147 \) Copy content Toggle raw display
$83$ \( (T + 45)^{3} \) Copy content Toggle raw display
$89$ \( T^{3} \) Copy content Toggle raw display
$97$ \( T^{3} \) Copy content Toggle raw display
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