Properties

Label 19.4.a.b
Level $19$
Weight $4$
Character orbit 19.a
Self dual yes
Analytic conductor $1.121$
Analytic rank $0$
Dimension $3$
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] = [19,4,Mod(1,19)] 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("19.1"); S:= CuspForms(chi, 4); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(19, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0])) N = Newforms(chi, 4, names="a")
 
Level: \( N \) \(=\) \( 19 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 19.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [3] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(1)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(1.12103629011\)
Analytic rank: \(0\)
Dimension: \(3\)
Coefficient field: 3.3.3144.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - x^{2} - 16x - 8 \) 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 a basis \(1,\beta_1,\beta_2\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_{2} + \beta_1 + 1) q^{2} + (2 \beta_{2} - \beta_1) q^{3} + ( - 2 \beta_{2} - \beta_1 + 8) q^{4} + (2 \beta_{2} - 3 \beta_1 + 5) q^{5} + (4 \beta_{2} + 3 \beta_1 - 24) q^{6} + (4 \beta_1 - 13) q^{7}+ \cdots + ( - 110 \beta_{2} + 21 \beta_1 + 113) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q + 3 q^{2} + q^{3} + 21 q^{4} + 14 q^{5} - 65 q^{6} - 35 q^{7} + 27 q^{8} + 48 q^{9} - 88 q^{10} + 16 q^{11} - 115 q^{12} + 65 q^{13} + 37 q^{14} + 140 q^{15} + 33 q^{16} + 29 q^{17} + 138 q^{18} - 57 q^{19}+ \cdots + 250 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 16x - 8 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{2} - \nu - 10 ) / 2 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( 2\beta_{2} + \beta _1 + 10 \) 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
−3.20905
4.73549
−0.526440
−3.96257 6.71610 7.70200 18.1342 −26.6130 −25.8362 1.18085 18.1060 −71.8581
1.2 1.89080 2.95388 −4.42486 −1.51710 5.58521 5.94196 −23.4930 −18.2746 −2.86853
1.3 5.07177 −8.66998 17.7229 −2.61710 −43.9722 −15.1058 49.3121 48.1686 −13.2733
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(19\) \( +1 \)

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 19.4.a.b 3
3.b odd 2 1 171.4.a.f 3
4.b odd 2 1 304.4.a.i 3
5.b even 2 1 475.4.a.f 3
5.c odd 4 2 475.4.b.f 6
7.b odd 2 1 931.4.a.c 3
8.b even 2 1 1216.4.a.s 3
8.d odd 2 1 1216.4.a.u 3
11.b odd 2 1 2299.4.a.h 3
19.b odd 2 1 361.4.a.i 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
19.4.a.b 3 1.a even 1 1 trivial
171.4.a.f 3 3.b odd 2 1
304.4.a.i 3 4.b odd 2 1
361.4.a.i 3 19.b odd 2 1
475.4.a.f 3 5.b even 2 1
475.4.b.f 6 5.c odd 4 2
931.4.a.c 3 7.b odd 2 1
1216.4.a.s 3 8.b even 2 1
1216.4.a.u 3 8.d odd 2 1
2299.4.a.h 3 11.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{3} - 3T_{2}^{2} - 18T_{2} + 38 \) acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(19))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} - 3 T^{2} + \cdots + 38 \) Copy content Toggle raw display
$3$ \( T^{3} - T^{2} + \cdots + 172 \) Copy content Toggle raw display
$5$ \( T^{3} - 14 T^{2} + \cdots - 72 \) Copy content Toggle raw display
$7$ \( T^{3} + 35 T^{2} + \cdots - 2319 \) Copy content Toggle raw display
$11$ \( T^{3} - 16 T^{2} + \cdots + 1182 \) Copy content Toggle raw display
$13$ \( T^{3} - 65 T^{2} + \cdots + 4848 \) Copy content Toggle raw display
$17$ \( T^{3} - 29 T^{2} + \cdots - 218619 \) Copy content Toggle raw display
$19$ \( (T + 19)^{3} \) Copy content Toggle raw display
$23$ \( T^{3} + 101 T^{2} + \cdots - 378176 \) Copy content Toggle raw display
$29$ \( T^{3} - 377 T^{2} + \cdots + 4544396 \) Copy content Toggle raw display
$31$ \( T^{3} + 140 T^{2} + \cdots - 2444352 \) Copy content Toggle raw display
$37$ \( T^{3} + 290 T^{2} + \cdots - 10001448 \) Copy content Toggle raw display
$41$ \( T^{3} - 956 T^{2} + \cdots - 31578144 \) Copy content Toggle raw display
$43$ \( T^{3} + 570 T^{2} + \cdots - 65963504 \) Copy content Toggle raw display
$47$ \( T^{3} - 66 T^{2} + \cdots + 2940624 \) Copy content Toggle raw display
$53$ \( T^{3} - 817 T^{2} + \cdots - 16824816 \) Copy content Toggle raw display
$59$ \( T^{3} - 265 T^{2} + \cdots + 31557612 \) Copy content Toggle raw display
$61$ \( T^{3} - 988 T^{2} + \cdots + 76875874 \) Copy content Toggle raw display
$67$ \( T^{3} + 207 T^{2} + \cdots - 7515248 \) Copy content Toggle raw display
$71$ \( T^{3} - 846 T^{2} + \cdots + 1727928 \) Copy content Toggle raw display
$73$ \( T^{3} - 627 T^{2} + \cdots + 145581839 \) Copy content Toggle raw display
$79$ \( T^{3} - 382 T^{2} + \cdots - 56023488 \) Copy content Toggle raw display
$83$ \( T^{3} + 766 T^{2} + \cdots - 78728352 \) Copy content Toggle raw display
$89$ \( T^{3} + 172 T^{2} + \cdots - 76923456 \) Copy content Toggle raw display
$97$ \( T^{3} + 2450 T^{2} + \cdots + 196438912 \) Copy content Toggle raw display
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