Properties

Label 83.9.b.a
Level $83$
Weight $9$
Character orbit 83.b
Self dual yes
Analytic conductor $33.812$
Analytic rank $0$
Dimension $3$
CM discriminant -83
Inner twists $2$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [83,9,Mod(82,83)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(83, 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("83.82");
 
S:= CuspForms(chi, 9);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 83 \)
Weight: \( k \) \(=\) \( 9 \)
Character orbit: \([\chi]\) \(=\) 83.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: \(33.8124246351\)
Analytic rank: \(0\)
Dimension: \(3\)
Coefficient field: 3.3.2241.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - 9x - 5 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
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.

\(f(q)\) \(=\) \( q + ( - 2 \beta_{2} - 47 \beta_1) q^{3} + 256 q^{4} + (661 \beta_{2} - 846 \beta_1) q^{7} + (2013 \beta_{2} + 2573 \beta_1 + 6561) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - 2 \beta_{2} - 47 \beta_1) q^{3} + 256 q^{4} + (661 \beta_{2} - 846 \beta_1) q^{7} + (2013 \beta_{2} + 2573 \beta_1 + 6561) q^{9} + ( - 4979 \beta_{2} - 4611 \beta_1) q^{11} + ( - 512 \beta_{2} - 12032 \beta_1) q^{12} + 65536 q^{16} + ( - 23099 \beta_{2} - 36942 \beta_1) q^{17} + (71781 \beta_{2} - 15022 \beta_1 + 249439) q^{21} - 462961 q^{23} + 390625 q^{25} + ( - 13122 \beta_{2} - 308367 \beta_1 - 682193) q^{27} + (169216 \beta_{2} - 216576 \beta_1) q^{28} + ( - 262274 \beta_{2} + 46593 \beta_1) q^{29} + ( - 233939 \beta_{2} + 358653 \beta_1) q^{31} + ( - 46434 \beta_{2} + 673313 \beta_1 + 1196479) q^{33} + (515328 \beta_{2} + 658688 \beta_1 + 1679616) q^{36} + (341821 \beta_{2} + 1006413 \beta_1) q^{37} + 5644799 q^{41} + ( - 1274624 \beta_{2} - 1180416 \beta_1) q^{44} + ( - 131072 \beta_{2} - 3080192 \beta_1) q^{48} + (960286 \beta_{2} - 2831871 \beta_1 + 5764801) q^{49} + (484341 \beta_{2} + 3916754 \beta_1 + 9904879) q^{51} + ( - 1277387 \beta_{2} + 6508818 \beta_1) q^{59} + (1591678 \beta_{2} - 7354527 \beta_1) q^{61} + ( - 498878 \beta_{2} - 11723633 \beta_1 + 5569999) q^{63} + 16777216 q^{64} + ( - 5913344 \beta_{2} - 9457152 \beta_1) q^{68} + (925922 \beta_{2} + 21759167 \beta_1) q^{69} + ( - 781250 \beta_{2} - 18359375 \beta_1) q^{75} + (9318781 \beta_{2} + 16102989 \beta_1 - 23834593) q^{77} + (1364386 \beta_{2} + 32063071 \beta_1 + 43046721) q^{81} + 47458321 q^{83} + (18375936 \beta_{2} - 3845632 \beta_1 + 63856384) q^{84} + ( - 15472659 \beta_{2} + \cdots - 18029246) q^{87}+ \cdots + ( - 2392958 \beta_{2} + \cdots - 189409886) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q + 768 q^{4} + 19683 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 3 q + 768 q^{4} + 19683 q^{9} + 196608 q^{16} + 748317 q^{21} - 1388883 q^{23} + 1171875 q^{25} - 2046579 q^{27} + 3589437 q^{33} + 5038848 q^{36} + 16934397 q^{41} + 17294403 q^{49} + 29714637 q^{51} + 16709997 q^{63} + 50331648 q^{64} - 71503779 q^{77} + 129140163 q^{81} + 142374963 q^{83} + 191569152 q^{84} - 54087738 q^{87} - 355554048 q^{92} - 314603043 q^{93} - 568229658 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - 9x - 5 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} - \nu - 6 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} + \beta _1 + 6 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/83\mathbb{Z}\right)^\times\).

\(n\) \(2\)
\(\chi(n)\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
82.1
3.24655
−0.576888
−2.66966
0 −155.175 256.000 0 0 −1891.55 0 17518.3 0
82.2 0 37.2943 256.000 0 0 −2876.65 0 −5170.13 0
82.3 0 117.881 256.000 0 0 4768.20 0 7334.85 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
83.b odd 2 1 CM by \(\Q(\sqrt{-83}) \)

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 83.9.b.a 3
83.b odd 2 1 CM 83.9.b.a 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
83.9.b.a 3 1.a even 1 1 trivial
83.9.b.a 3 83.b odd 2 1 CM

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2} \) acting on \(S_{9}^{\mathrm{new}}(83, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} \) Copy content Toggle raw display
$3$ \( T^{3} - 19683 T + 682193 \) Copy content Toggle raw display
$5$ \( T^{3} \) Copy content Toggle raw display
$7$ \( T^{3} + \cdots - 25945332527 \) Copy content Toggle raw display
$11$ \( T^{3} + \cdots - 3953884540367 \) Copy content Toggle raw display
$13$ \( T^{3} \) Copy content Toggle raw display
$17$ \( T^{3} + \cdots + 227247455192353 \) Copy content Toggle raw display
$19$ \( T^{3} \) Copy content Toggle raw display
$23$ \( (T + 462961)^{3} \) Copy content Toggle raw display
$29$ \( T^{3} + \cdots - 27\!\cdots\!07 \) Copy content Toggle raw display
$31$ \( T^{3} + \cdots + 15\!\cdots\!53 \) Copy content Toggle raw display
$37$ \( T^{3} + \cdots - 11\!\cdots\!87 \) Copy content Toggle raw display
$41$ \( (T - 5644799)^{3} \) Copy content Toggle raw display
$43$ \( T^{3} \) Copy content Toggle raw display
$47$ \( T^{3} \) Copy content Toggle raw display
$53$ \( T^{3} \) Copy content Toggle raw display
$59$ \( T^{3} + \cdots + 11\!\cdots\!13 \) Copy content Toggle raw display
$61$ \( T^{3} + \cdots - 21\!\cdots\!67 \) Copy content Toggle raw display
$67$ \( T^{3} \) Copy content Toggle raw display
$71$ \( T^{3} \) Copy content Toggle raw display
$73$ \( T^{3} \) Copy content Toggle raw display
$79$ \( T^{3} \) Copy content Toggle raw display
$83$ \( (T - 47458321)^{3} \) Copy content Toggle raw display
$89$ \( T^{3} \) Copy content Toggle raw display
$97$ \( T^{3} \) Copy content Toggle raw display
show more
show less