Properties

Label 355.1.c.b
Level $355$
Weight $1$
Character orbit 355.c
Analytic conductor $0.177$
Analytic rank $0$
Dimension $6$
Projective image $D_{14}$
CM discriminant -71
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [355,1,Mod(354,355)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(355, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("355.354");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 355 = 5 \cdot 71 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 355.c (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: no
Analytic conductor: \(0.177168079485\)
Analytic rank: \(0\)
Dimension: \(6\)
Coefficient field: \(\Q(\zeta_{14})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - x^{5} + x^{4} - x^{3} + x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{14}\)
Projective field: Galois closure of 14.2.10007834681328125.1

$q$-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.

\(f(q)\) \(=\) \( q + (\zeta_{14}^{5} + \zeta_{14}^{2}) q^{2} + ( - \zeta_{14}^{6} - \zeta_{14}) q^{3} + (\zeta_{14}^{4} - \zeta_{14}^{3} - 1) q^{4} + \zeta_{14}^{3} q^{5} + ( - \zeta_{14}^{6} + \zeta_{14}^{4} + \cdots + \zeta_{14}) q^{6}+ \cdots + ( - \zeta_{14}^{5} + \zeta_{14}^{2} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{14}^{5} + \zeta_{14}^{2}) q^{2} + ( - \zeta_{14}^{6} - \zeta_{14}) q^{3} + (\zeta_{14}^{4} - \zeta_{14}^{3} - 1) q^{4} + \zeta_{14}^{3} q^{5} + ( - \zeta_{14}^{6} + \zeta_{14}^{4} + \cdots + \zeta_{14}) q^{6}+ \cdots + ( - \zeta_{14}^{5} - \zeta_{14}^{2}) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q - 8 q^{4} + q^{5} - 8 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 6 q - 8 q^{4} + q^{5} - 8 q^{9} + 6 q^{16} + 2 q^{19} - 6 q^{20} + 14 q^{24} - q^{25} + 2 q^{29} - 7 q^{30} + 6 q^{36} + q^{45} - 6 q^{49} - 7 q^{60} - 8 q^{64} - 6 q^{71} + 14 q^{74} + 7 q^{75} + 2 q^{76} + 2 q^{79} + 8 q^{80} + 6 q^{81} - 2 q^{89} - 7 q^{90} - 2 q^{95} - 14 q^{96}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/355\mathbb{Z}\right)^\times\).

\(n\) \(72\) \(291\)
\(\chi(n)\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
354.1
−0.623490 + 0.781831i
0.900969 0.433884i
0.222521 0.974928i
0.222521 + 0.974928i
0.900969 + 0.433884i
−0.623490 0.781831i
1.94986i 1.56366i −2.80194 0.900969 + 0.433884i −3.04892 0 3.51352i −1.44504 0.846011 1.75676i
354.2 1.56366i 0.867767i −1.44504 0.222521 0.974928i 1.35690 0 0.695895i 0.246980 −1.52446 0.347948i
354.3 0.867767i 1.94986i 0.246980 −0.623490 + 0.781831i 1.69202 0 1.08209i −2.80194 0.678448 + 0.541044i
354.4 0.867767i 1.94986i 0.246980 −0.623490 0.781831i 1.69202 0 1.08209i −2.80194 0.678448 0.541044i
354.5 1.56366i 0.867767i −1.44504 0.222521 + 0.974928i 1.35690 0 0.695895i 0.246980 −1.52446 + 0.347948i
354.6 1.94986i 1.56366i −2.80194 0.900969 0.433884i −3.04892 0 3.51352i −1.44504 0.846011 + 1.75676i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 354.6
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
71.b odd 2 1 CM by \(\Q(\sqrt{-71}) \)
5.b even 2 1 inner
355.c odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 355.1.c.b 6
3.b odd 2 1 3195.1.e.d 6
5.b even 2 1 inner 355.1.c.b 6
5.c odd 4 2 1775.1.d.c 6
15.d odd 2 1 3195.1.e.d 6
71.b odd 2 1 CM 355.1.c.b 6
213.b even 2 1 3195.1.e.d 6
355.c odd 2 1 inner 355.1.c.b 6
355.e even 4 2 1775.1.d.c 6
1065.h even 2 1 3195.1.e.d 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
355.1.c.b 6 1.a even 1 1 trivial
355.1.c.b 6 5.b even 2 1 inner
355.1.c.b 6 71.b odd 2 1 CM
355.1.c.b 6 355.c odd 2 1 inner
1775.1.d.c 6 5.c odd 4 2
1775.1.d.c 6 355.e even 4 2
3195.1.e.d 6 3.b odd 2 1
3195.1.e.d 6 15.d odd 2 1
3195.1.e.d 6 213.b even 2 1
3195.1.e.d 6 1065.h even 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{6} + 7T_{2}^{4} + 14T_{2}^{2} + 7 \) acting on \(S_{1}^{\mathrm{new}}(355, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{6} + 7 T^{4} + \cdots + 7 \) Copy content Toggle raw display
$3$ \( T^{6} + 7 T^{4} + \cdots + 7 \) Copy content Toggle raw display
$5$ \( T^{6} - T^{5} + T^{4} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( T^{6} \) Copy content Toggle raw display
$11$ \( T^{6} \) Copy content Toggle raw display
$13$ \( T^{6} \) Copy content Toggle raw display
$17$ \( T^{6} \) Copy content Toggle raw display
$19$ \( (T^{3} - T^{2} - 2 T + 1)^{2} \) Copy content Toggle raw display
$23$ \( T^{6} \) Copy content Toggle raw display
$29$ \( (T^{3} - T^{2} - 2 T + 1)^{2} \) Copy content Toggle raw display
$31$ \( T^{6} \) Copy content Toggle raw display
$37$ \( T^{6} + 7 T^{4} + \cdots + 7 \) Copy content Toggle raw display
$41$ \( T^{6} \) Copy content Toggle raw display
$43$ \( T^{6} + 7 T^{4} + \cdots + 7 \) Copy content Toggle raw display
$47$ \( T^{6} \) Copy content Toggle raw display
$53$ \( T^{6} \) Copy content Toggle raw display
$59$ \( T^{6} \) Copy content Toggle raw display
$61$ \( T^{6} \) Copy content Toggle raw display
$67$ \( T^{6} \) Copy content Toggle raw display
$71$ \( (T + 1)^{6} \) Copy content Toggle raw display
$73$ \( T^{6} + 7 T^{4} + \cdots + 7 \) Copy content Toggle raw display
$79$ \( (T^{3} - T^{2} - 2 T + 1)^{2} \) Copy content Toggle raw display
$83$ \( T^{6} + 7 T^{4} + \cdots + 7 \) Copy content Toggle raw display
$89$ \( (T^{3} + T^{2} - 2 T - 1)^{2} \) Copy content Toggle raw display
$97$ \( T^{6} \) Copy content Toggle raw display
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