Properties

Label 79.9.b.a
Level $79$
Weight $9$
Character orbit 79.b
Self dual yes
Analytic conductor $32.183$
Analytic rank $0$
Dimension $5$
CM discriminant -79
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [79,9,Mod(78,79)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(79, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1]))
 
N = Newforms(chi, 9, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("79.78");
 
S:= CuspForms(chi, 9);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 79 \)
Weight: \( k \) \(=\) \( 9 \)
Character orbit: \([\chi]\) \(=\) 79.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: \(32.1829101948\)
Analytic rank: \(0\)
Dimension: \(5\)
Coefficient field: 5.5.19503125.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{5} - 10x^{3} + 20x - 7 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 3^{2}\cdot 7^{2} \)
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 \(1,\beta_1,\beta_2,\beta_3,\beta_4\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\beta_{3} - \beta_{2}) q^{2} + ( - 5 \beta_{4} - 59 \beta_1 + 256) q^{4} + (11 \beta_{4} - 138 \beta_1) q^{5} + (80 \beta_{4} + 256 \beta_{3} + \cdots - 879 \beta_1) q^{8}+ \cdots + 6561 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\beta_{3} - \beta_{2}) q^{2} + ( - 5 \beta_{4} - 59 \beta_1 + 256) q^{4} + (11 \beta_{4} - 138 \beta_1) q^{5} + (80 \beta_{4} + 256 \beta_{3} + \cdots - 879 \beta_1) q^{8}+ \cdots + ( - 5898339 \beta_{3} - 2532546 \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 5 q + 1280 q^{4} + 32805 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 5 q + 1280 q^{4} + 32805 q^{9} + 327680 q^{16} + 999205 q^{20} - 2012315 q^{22} + 1953125 q^{25} - 2629115 q^{26} + 6130885 q^{32} + 8398080 q^{36} + 25568005 q^{40} + 28824005 q^{49} + 41422405 q^{50} + 12584485 q^{62} + 83886080 q^{64} - 139993115 q^{76} + 194750405 q^{79} + 255796480 q^{80} + 215233605 q^{81} - 94216790 q^{83} - 515152640 q^{88} - 542165915 q^{92} - 790874870 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{5} - 10x^{3} + 20x - 7 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu^{4} - 8\nu^{2} + 8 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( 3\nu^{2} - 12 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( 7\nu^{3} - 5\nu^{2} - 42\nu + 20 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( -5\nu^{4} + 40\nu^{2} + 21\nu - 40 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{4} + 5\beta_1 ) / 21 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{2} + 12 ) / 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 6\beta_{4} + 3\beta_{3} + 5\beta_{2} + 30\beta_1 ) / 21 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 8\beta_{2} + 3\beta _1 + 72 ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/79\mathbb{Z}\right)^\times\).

\(n\) \(3\)
\(\chi(n)\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
78.1
−2.54982
1.34333
2.78236
0.376256
−1.95213
−28.9649 0 582.964 −252.771 0 0 −9470.48 6561.00 7321.48
78.2 −21.8877 0 223.070 924.049 0 0 720.770 6561.00 −20225.3
78.3 3.98638 0 −240.109 −515.057 0 0 −1977.68 6561.00 −2053.21
78.4 15.4376 0 −17.6816 −1242.37 0 0 −4224.98 6561.00 −19179.2
78.5 31.4286 0 731.757 1086.15 0 0 14952.4 6561.00 34136.2
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 78.5
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
79.b odd 2 1 CM by \(\Q(\sqrt{-79}) \)

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 79.9.b.a 5
79.b odd 2 1 CM 79.9.b.a 5
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
79.9.b.a 5 1.a even 1 1 trivial
79.9.b.a 5 79.b odd 2 1 CM

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{5} - 1280T_{2}^{3} + 327680T_{2} - 1226177 \) acting on \(S_{9}^{\mathrm{new}}(79, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{5} - 1280 T^{3} + \cdots - 1226177 \) Copy content Toggle raw display
$3$ \( T^{5} \) Copy content Toggle raw display
$5$ \( T^{5} + \cdots + 162337197810334 \) Copy content Toggle raw display
$7$ \( T^{5} \) Copy content Toggle raw display
$11$ \( T^{5} + \cdots - 22\!\cdots\!02 \) Copy content Toggle raw display
$13$ \( T^{5} + \cdots - 29\!\cdots\!02 \) Copy content Toggle raw display
$17$ \( T^{5} \) Copy content Toggle raw display
$19$ \( T^{5} + \cdots - 59\!\cdots\!02 \) Copy content Toggle raw display
$23$ \( T^{5} + \cdots + 23\!\cdots\!98 \) Copy content Toggle raw display
$29$ \( T^{5} \) Copy content Toggle raw display
$31$ \( T^{5} + \cdots - 13\!\cdots\!02 \) Copy content Toggle raw display
$37$ \( T^{5} \) Copy content Toggle raw display
$41$ \( T^{5} \) Copy content Toggle raw display
$43$ \( T^{5} \) Copy content Toggle raw display
$47$ \( T^{5} \) Copy content Toggle raw display
$53$ \( T^{5} \) Copy content Toggle raw display
$59$ \( T^{5} \) Copy content Toggle raw display
$61$ \( T^{5} \) Copy content Toggle raw display
$67$ \( T^{5} + \cdots + 42\!\cdots\!98 \) Copy content Toggle raw display
$71$ \( T^{5} \) Copy content Toggle raw display
$73$ \( T^{5} + \cdots - 36\!\cdots\!02 \) Copy content Toggle raw display
$79$ \( (T - 38950081)^{5} \) Copy content Toggle raw display
$83$ \( (T + 18843358)^{5} \) Copy content Toggle raw display
$89$ \( T^{5} + \cdots + 14\!\cdots\!98 \) Copy content Toggle raw display
$97$ \( T^{5} + \cdots + 98\!\cdots\!98 \) Copy content Toggle raw display
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