Properties

Label 46.4.a.d
Level $46$
Weight $4$
Character orbit 46.a
Self dual yes
Analytic conductor $2.714$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $1$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [46,4,Mod(1,46)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("46.1"); S:= CuspForms(chi, 4); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(46, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0])) N = Newforms(chi, 4, names="a")
 
Level: \( N \) \(=\) \( 46 = 2 \cdot 23 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 46.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [2,4] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(2)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(2.71408786026\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{73}) \)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x - 18 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Fricke sign: \(+1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

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

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = \frac{1}{2}(1 + \sqrt{73})\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 q^{2} + ( - \beta + 2) q^{3} + 4 q^{4} + (2 \beta + 4) q^{5} + ( - 2 \beta + 4) q^{6} + (4 \beta + 4) q^{7} + 8 q^{8} + ( - 3 \beta - 5) q^{9} + (4 \beta + 8) q^{10} - 6 q^{11} + ( - 4 \beta + 8) q^{12}+ \cdots + (18 \beta + 30) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 4 q^{2} + 3 q^{3} + 8 q^{4} + 10 q^{5} + 6 q^{6} + 12 q^{7} + 16 q^{8} - 13 q^{9} + 20 q^{10} - 12 q^{11} + 12 q^{12} - 51 q^{13} + 24 q^{14} - 58 q^{15} + 32 q^{16} - 66 q^{17} - 26 q^{18} - 16 q^{19}+ \cdots + 78 q^{99}+O(q^{100}) \) 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.

Copy content comment:embeddings in the coefficient field
 
Copy content 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
4.77200
−3.77200
2.00000 −2.77200 4.00000 13.5440 −5.54400 23.0880 8.00000 −19.3160 27.0880
1.2 2.00000 5.77200 4.00000 −3.54400 11.5440 −11.0880 8.00000 6.31601 −7.08801
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( -1 \)
\(23\) \( -1 \)

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 46.4.a.d 2
3.b odd 2 1 414.4.a.f 2
4.b odd 2 1 368.4.a.f 2
5.b even 2 1 1150.4.a.j 2
5.c odd 4 2 1150.4.b.j 4
7.b odd 2 1 2254.4.a.f 2
8.b even 2 1 1472.4.a.k 2
8.d odd 2 1 1472.4.a.n 2
23.b odd 2 1 1058.4.a.j 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
46.4.a.d 2 1.a even 1 1 trivial
368.4.a.f 2 4.b odd 2 1
414.4.a.f 2 3.b odd 2 1
1058.4.a.j 2 23.b odd 2 1
1150.4.a.j 2 5.b even 2 1
1150.4.b.j 4 5.c odd 4 2
1472.4.a.k 2 8.b even 2 1
1472.4.a.n 2 8.d odd 2 1
2254.4.a.f 2 7.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{2} - 3T_{3} - 16 \) acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(46))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T - 2)^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 3T - 16 \) Copy content Toggle raw display
$5$ \( T^{2} - 10T - 48 \) Copy content Toggle raw display
$7$ \( T^{2} - 12T - 256 \) Copy content Toggle raw display
$11$ \( (T + 6)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 51T - 1558 \) Copy content Toggle raw display
$17$ \( T^{2} + 66T + 432 \) Copy content Toggle raw display
$19$ \( T^{2} + 16T - 7236 \) Copy content Toggle raw display
$23$ \( (T - 23)^{2} \) Copy content Toggle raw display
$29$ \( T^{2} + 57T - 19062 \) Copy content Toggle raw display
$31$ \( T^{2} + 17T - 86816 \) Copy content Toggle raw display
$37$ \( T^{2} - 206T - 15744 \) Copy content Toggle raw display
$41$ \( T^{2} - 373T + 19434 \) Copy content Toggle raw display
$43$ \( T^{2} - 314T - 98064 \) Copy content Toggle raw display
$47$ \( T^{2} - 859T + 173064 \) Copy content Toggle raw display
$53$ \( T^{2} - 50T - 25728 \) Copy content Toggle raw display
$59$ \( T^{2} - 612T + 27936 \) Copy content Toggle raw display
$61$ \( T^{2} + 1062 T + 220568 \) Copy content Toggle raw display
$67$ \( T^{2} + 844T + 120852 \) Copy content Toggle raw display
$71$ \( T^{2} - 399T + 31752 \) Copy content Toggle raw display
$73$ \( T^{2} + 1277 T + 407518 \) Copy content Toggle raw display
$79$ \( T^{2} - 122T - 8616 \) Copy content Toggle raw display
$83$ \( T^{2} - 1802 T + 802968 \) Copy content Toggle raw display
$89$ \( T^{2} - 2046 T + 1040616 \) Copy content Toggle raw display
$97$ \( T^{2} + 910 T - 1163112 \) Copy content Toggle raw display
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