Properties

Label 2768.1.w.a
Level $2768$
Weight $1$
Character orbit 2768.w
Analytic conductor $1.381$
Analytic rank $0$
Dimension $42$
Projective image $D_{86}$
CM discriminant -4
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2768,1,Mod(15,2768)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2768, base_ring=CyclotomicField(86))
 
chi = DirichletCharacter(H, H._module([43, 0, 33]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2768.15");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2768 = 2^{4} \cdot 173 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2768.w (of order \(86\), degree \(42\), 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: no
Analytic conductor: \(1.38141195497\)
Analytic rank: \(0\)
Dimension: \(42\)
Coefficient field: \(\Q(\zeta_{86})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{42} - x^{41} + x^{40} - x^{39} + x^{38} - x^{37} + x^{36} - x^{35} + x^{34} - x^{33} + x^{32} + \cdots + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{9}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{86}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{86} - \cdots)\)

$q$-expansion

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

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q + (\zeta_{86}^{23} + \zeta_{86}^{2}) q^{5} - \zeta_{86}^{14} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{86}^{23} + \zeta_{86}^{2}) q^{5} - \zeta_{86}^{14} q^{9} + (\zeta_{86}^{18} + \zeta_{86}^{8}) q^{13} + ( - \zeta_{86}^{42} - \zeta_{86}^{7}) q^{17} + (\zeta_{86}^{25} + \cdots - \zeta_{86}^{3}) q^{25} + \cdots + ( - \zeta_{86}^{6} - \zeta_{86}) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 42 q + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 42 q + q^{9} - 2 q^{13} - q^{25} + 2 q^{29} - 2 q^{37} - 2 q^{41} + q^{49} - 2 q^{73} - q^{81} - 2 q^{89}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2768\mathbb{Z}\right)^\times\).

\(n\) \(693\) \(1039\) \(1905\)
\(\chi(n)\) \(1\) \(-1\) \(-\zeta_{86}^{26}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
15.1
0.872049 0.489418i
0.976076 0.217430i
−0.252933 + 0.967484i
0.581859 + 0.813290i
0.934016 0.357231i
−0.957601 0.288099i
−0.252933 0.967484i
0.694074 0.719903i
0.181637 + 0.983366i
0.581859 0.813290i
0.0365220 0.999333i
−0.833998 0.551768i
−0.639673 + 0.768647i
−0.957601 + 0.288099i
−0.989343 0.145601i
−0.989343 + 0.145601i
0.934016 + 0.357231i
0.0365220 + 0.999333i
0.322880 0.946440i
0.322880 + 0.946440i
0 0 0 1.21501 0.133690i 0 0 0 −0.639673 + 0.768647i 0
31.1 0 0 0 1.22833 + 0.521983i 0 0 0 0.997332 + 0.0729953i 0
159.1 0 0 0 −1.26315 1.40976i 0 0 0 −0.905448 0.424457i 0
207.1 0 0 0 −1.31222 + 1.09204i 0 0 0 −0.744772 0.667319i 0
303.1 0 0 0 0.223832 1.52091i 0 0 0 −0.391105 0.920346i 0
367.1 0 0 0 −0.0714504 + 0.127311i 0 0 0 0.581859 + 0.813290i 0
383.1 0 0 0 −1.26315 + 1.40976i 0 0 0 −0.905448 + 0.424457i 0
543.1 0 0 0 0.897494 0.642102i 0 0 0 −0.252933 0.967484i 0
559.1 0 0 0 −0.0619667 + 0.846649i 0 0 0 −0.833998 0.551768i 0
575.1 0 0 0 −1.31222 1.09204i 0 0 0 −0.744772 + 0.667319i 0
607.1 0 0 0 −1.74210 + 0.594323i 0 0 0 0.872049 + 0.489418i 0
943.1 0 0 0 −0.248568 + 0.151699i 0 0 0 0.322880 0.946440i 0
991.1 0 0 0 −0.434570 0.0158820i 0 0 0 −0.957601 0.288099i 0
1071.1 0 0 0 −0.0714504 0.127311i 0 0 0 0.581859 0.813290i 0
1087.1 0 0 0 1.93368 + 0.505529i 0 0 0 0.457242 0.889342i 0
1151.1 0 0 0 1.93368 0.505529i 0 0 0 0.457242 + 0.889342i 0
1215.1 0 0 0 0.223832 + 1.52091i 0 0 0 −0.391105 + 0.920346i 0
1327.1 0 0 0 −1.74210 0.594323i 0 0 0 0.872049 0.489418i 0
1439.1 0 0 0 −1.74910 0.323075i 0 0 0 −0.109371 0.994001i 0
1535.1 0 0 0 −1.74910 + 0.323075i 0 0 0 −0.109371 + 0.994001i 0
See all 42 embeddings
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 15.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 CM by \(\Q(\sqrt{-1}) \)
173.e even 86 1 inner
692.h odd 86 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2768.1.w.a 42
4.b odd 2 1 CM 2768.1.w.a 42
173.e even 86 1 inner 2768.1.w.a 42
692.h odd 86 1 inner 2768.1.w.a 42
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2768.1.w.a 42 1.a even 1 1 trivial
2768.1.w.a 42 4.b odd 2 1 CM
2768.1.w.a 42 173.e even 86 1 inner
2768.1.w.a 42 692.h odd 86 1 inner

Hecke kernels

This newform subspace is the entire newspace \(S_{1}^{\mathrm{new}}(2768, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{42} \) Copy content Toggle raw display
$3$ \( T^{42} \) Copy content Toggle raw display
$5$ \( T^{42} + 43 T^{31} + \cdots + 43 \) Copy content Toggle raw display
$7$ \( T^{42} \) Copy content Toggle raw display
$11$ \( T^{42} \) Copy content Toggle raw display
$13$ \( T^{42} + 2 T^{41} + \cdots + 1 \) Copy content Toggle raw display
$17$ \( T^{42} + 43 T^{34} + \cdots + 43 \) Copy content Toggle raw display
$19$ \( T^{42} \) Copy content Toggle raw display
$23$ \( T^{42} \) Copy content Toggle raw display
$29$ \( T^{42} - 2 T^{41} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{42} \) Copy content Toggle raw display
$37$ \( T^{42} + 2 T^{41} + \cdots + 1 \) Copy content Toggle raw display
$41$ \( T^{42} + 2 T^{41} + \cdots + 1 \) Copy content Toggle raw display
$43$ \( T^{42} \) Copy content Toggle raw display
$47$ \( T^{42} \) Copy content Toggle raw display
$53$ \( T^{42} - 43 T^{27} + \cdots + 43 \) Copy content Toggle raw display
$59$ \( T^{42} \) Copy content Toggle raw display
$61$ \( T^{42} + 301 T^{27} + \cdots + 43 \) Copy content Toggle raw display
$67$ \( T^{42} \) Copy content Toggle raw display
$71$ \( T^{42} \) Copy content Toggle raw display
$73$ \( T^{42} + 2 T^{41} + \cdots + 1 \) Copy content Toggle raw display
$79$ \( T^{42} \) Copy content Toggle raw display
$83$ \( T^{42} \) Copy content Toggle raw display
$89$ \( T^{42} + 2 T^{41} + \cdots + 1 \) Copy content Toggle raw display
$97$ \( T^{42} + 43 T^{34} + \cdots + 43 \) Copy content Toggle raw display
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