Properties

Label 16.40.a.c
Level $16$
Weight $40$
Character orbit 16.a
Self dual yes
Analytic conductor $154.143$
Analytic rank $1$
Dimension $3$
CM no
Inner twists $1$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [16,40,Mod(1,16)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(16, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0]))
 
N = Newforms(chi, 40, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("16.1");
 
S:= CuspForms(chi, 40);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 16 = 2^{4} \)
Weight: \( k \) \(=\) \( 40 \)
Character orbit: \([\chi]\) \(=\) 16.a (trivial)

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: \(154.143282224\)
Analytic rank: \(1\)
Dimension: \(3\)
Coefficient field: \(\mathbb{Q}[x]/(x^{3} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - 175630027x - 142249227846 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{22}\cdot 3^{5}\cdot 5\cdot 13 \)
Twist minimal: no (minimal twist has level 1)
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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.

\(f(q)\) \(=\) \( q + ( - \beta_{2} - 369814284) q^{3} + ( - 12636 \beta_{2} + \cdots + 5808972166830) q^{5}+ \cdots + ( - 804651624 \beta_{2} + \cdots + 27\!\cdots\!97) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \beta_{2} - 369814284) q^{3} + ( - 12636 \beta_{2} + \cdots + 5808972166830) q^{5}+ \cdots + (31\!\cdots\!13 \beta_{2} + \cdots - 35\!\cdots\!24) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q - 1109442852 q^{3} + 17426916500490 q^{5} + 17\!\cdots\!44 q^{7}+ \cdots + 83\!\cdots\!91 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 3 q - 1109442852 q^{3} + 17426916500490 q^{5} + 17\!\cdots\!44 q^{7}+ \cdots - 10\!\cdots\!72 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - 175630027x - 142249227846 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 294912\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 216\nu^{2} - 629640\nu - 25290723888 ) / 7 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 294912 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 28672\beta_{2} + 8745\beta _1 + 103590805045248 ) / 884736 \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
−12827.3
13640.3
−812.996
0 −2.98790e9 0 2.54496e13 0 5.05826e16 0 4.87501e18 0
1.2 0 −1.27116e9 0 −6.16448e13 0 −1.43779e16 0 −2.43670e18 0
1.3 0 3.14962e9 0 5.36221e13 0 −1.82084e16 0 5.86757e18 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 16.40.a.c 3
4.b odd 2 1 1.40.a.a 3
12.b even 2 1 9.40.a.b 3
20.d odd 2 1 25.40.a.a 3
20.e even 4 2 25.40.b.a 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1.40.a.a 3 4.b odd 2 1
9.40.a.b 3 12.b even 2 1
16.40.a.c 3 1.a even 1 1 trivial
25.40.a.a 3 20.d odd 2 1
25.40.b.a 6 20.e even 4 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{3} + 1109442852T_{3}^{2} - 9616340959640856144T_{3} - 11962616211248827131796154688 \) acting on \(S_{40}^{\mathrm{new}}(\Gamma_0(16))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} \) Copy content Toggle raw display
$3$ \( T^{3} + \cdots - 11\!\cdots\!88 \) Copy content Toggle raw display
$5$ \( T^{3} + \cdots + 84\!\cdots\!00 \) Copy content Toggle raw display
$7$ \( T^{3} + \cdots - 13\!\cdots\!16 \) Copy content Toggle raw display
$11$ \( T^{3} + \cdots + 64\!\cdots\!88 \) Copy content Toggle raw display
$13$ \( T^{3} + \cdots + 27\!\cdots\!88 \) Copy content Toggle raw display
$17$ \( T^{3} + \cdots - 65\!\cdots\!24 \) Copy content Toggle raw display
$19$ \( T^{3} + \cdots + 32\!\cdots\!00 \) Copy content Toggle raw display
$23$ \( T^{3} + \cdots - 11\!\cdots\!88 \) Copy content Toggle raw display
$29$ \( T^{3} + \cdots - 79\!\cdots\!00 \) Copy content Toggle raw display
$31$ \( T^{3} + \cdots - 14\!\cdots\!52 \) Copy content Toggle raw display
$37$ \( T^{3} + \cdots + 22\!\cdots\!96 \) Copy content Toggle raw display
$41$ \( T^{3} + \cdots + 32\!\cdots\!72 \) Copy content Toggle raw display
$43$ \( T^{3} + \cdots - 13\!\cdots\!88 \) Copy content Toggle raw display
$47$ \( T^{3} + \cdots - 71\!\cdots\!56 \) Copy content Toggle raw display
$53$ \( T^{3} + \cdots + 22\!\cdots\!88 \) Copy content Toggle raw display
$59$ \( T^{3} + \cdots + 90\!\cdots\!00 \) Copy content Toggle raw display
$61$ \( T^{3} + \cdots + 34\!\cdots\!12 \) Copy content Toggle raw display
$67$ \( T^{3} + \cdots - 23\!\cdots\!76 \) Copy content Toggle raw display
$71$ \( T^{3} + \cdots + 11\!\cdots\!68 \) Copy content Toggle raw display
$73$ \( T^{3} + \cdots - 48\!\cdots\!12 \) Copy content Toggle raw display
$79$ \( T^{3} + \cdots - 95\!\cdots\!00 \) Copy content Toggle raw display
$83$ \( T^{3} + \cdots - 40\!\cdots\!88 \) Copy content Toggle raw display
$89$ \( T^{3} + \cdots + 24\!\cdots\!00 \) Copy content Toggle raw display
$97$ \( T^{3} + \cdots + 58\!\cdots\!56 \) Copy content Toggle raw display
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