Properties

Label 315.2.bz.a
Level $315$
Weight $2$
Character orbit 315.bz
Analytic conductor $2.515$
Analytic rank $1$
Dimension $4$
CM no
Inner twists $2$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [315,2,Mod(73,315)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(315, base_ring=CyclotomicField(12))
 
chi = DirichletCharacter(H, H._module([0, 9, 2]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("315.73");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 315 = 3^{2} \cdot 5 \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 315.bz (of order \(12\), degree \(4\), 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: \(2.51528766367\)
Analytic rank: \(1\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{12})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 35)
Sato-Tate group: $\mathrm{SU}(2)[C_{12}]$

$q$-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 primitive root of unity \(\zeta_{12}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\zeta_{12}^{3} + \zeta_{12}^{2} - 1) q^{2} + ( - \zeta_{12}^{2} - 1) q^{4} + (\zeta_{12}^{3} - 2 \zeta_{12}^{2} - \zeta_{12}) q^{5} + (\zeta_{12}^{2} - 3) q^{7} + (\zeta_{12}^{2} - \zeta_{12}) q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{12}^{3} + \zeta_{12}^{2} - 1) q^{2} + ( - \zeta_{12}^{2} - 1) q^{4} + (\zeta_{12}^{3} - 2 \zeta_{12}^{2} - \zeta_{12}) q^{5} + (\zeta_{12}^{2} - 3) q^{7} + (\zeta_{12}^{2} - \zeta_{12}) q^{8} + ( - 3 \zeta_{12}^{3} - \zeta_{12}^{2} + \cdots + 2) q^{10}+ \cdots + (3 \zeta_{12}^{3} + 8 \zeta_{12}^{2} + \cdots - 3) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 2 q^{2} - 6 q^{4} - 4 q^{5} - 10 q^{7} + 2 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 2 q^{2} - 6 q^{4} - 4 q^{5} - 10 q^{7} + 2 q^{8} + 6 q^{10} - 2 q^{11} - 8 q^{13} + 2 q^{14} - 2 q^{16} - 8 q^{17} - 2 q^{19} + 4 q^{22} - 14 q^{23} - 6 q^{25} + 12 q^{26} + 18 q^{28} - 12 q^{31} + 12 q^{32} + 8 q^{34} + 16 q^{35} - 12 q^{37} + 10 q^{38} + 8 q^{40} - 6 q^{43} + 6 q^{44} + 14 q^{46} - 6 q^{47} + 22 q^{49} - 14 q^{50} + 12 q^{52} - 10 q^{53} + 8 q^{55} - 8 q^{56} - 12 q^{58} + 6 q^{59} - 12 q^{61} + 4 q^{62} + 12 q^{65} + 8 q^{67} + 12 q^{68} - 12 q^{70} - 12 q^{71} - 12 q^{74} + 2 q^{77} - 6 q^{79} + 8 q^{80} - 2 q^{83} + 4 q^{85} - 18 q^{86} - 10 q^{88} - 16 q^{89} + 20 q^{91} + 18 q^{92} + 6 q^{94} + 2 q^{95} + 4 q^{97} + 4 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/315\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(136\) \(281\)
\(\chi(n)\) \(\zeta_{12}^{3}\) \(\zeta_{12}^{2}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
73.1
−0.866025 0.500000i
−0.866025 + 0.500000i
0.866025 0.500000i
0.866025 + 0.500000i
−0.500000 0.133975i 0 −1.50000 0.866025i −0.133975 2.23205i 0 −2.50000 + 0.866025i 1.36603 + 1.36603i 0 −0.232051 + 1.13397i
82.1 −0.500000 + 0.133975i 0 −1.50000 + 0.866025i −0.133975 + 2.23205i 0 −2.50000 0.866025i 1.36603 1.36603i 0 −0.232051 1.13397i
208.1 −0.500000 1.86603i 0 −1.50000 + 0.866025i −1.86603 + 1.23205i 0 −2.50000 0.866025i −0.366025 0.366025i 0 3.23205 + 2.86603i
262.1 −0.500000 + 1.86603i 0 −1.50000 0.866025i −1.86603 1.23205i 0 −2.50000 + 0.866025i −0.366025 + 0.366025i 0 3.23205 2.86603i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
35.k even 12 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 315.2.bz.a 4
3.b odd 2 1 35.2.k.b yes 4
5.c odd 4 1 315.2.bz.b 4
7.d odd 6 1 315.2.bz.b 4
12.b even 2 1 560.2.ci.b 4
15.d odd 2 1 175.2.o.a 4
15.e even 4 1 35.2.k.a 4
15.e even 4 1 175.2.o.b 4
21.c even 2 1 245.2.l.b 4
21.g even 6 1 35.2.k.a 4
21.g even 6 1 245.2.f.a 4
21.h odd 6 1 245.2.f.b 4
21.h odd 6 1 245.2.l.a 4
35.k even 12 1 inner 315.2.bz.a 4
60.l odd 4 1 560.2.ci.a 4
84.j odd 6 1 560.2.ci.a 4
105.k odd 4 1 245.2.l.a 4
105.p even 6 1 175.2.o.b 4
105.w odd 12 1 35.2.k.b yes 4
105.w odd 12 1 175.2.o.a 4
105.w odd 12 1 245.2.f.b 4
105.x even 12 1 245.2.f.a 4
105.x even 12 1 245.2.l.b 4
420.br even 12 1 560.2.ci.b 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
35.2.k.a 4 15.e even 4 1
35.2.k.a 4 21.g even 6 1
35.2.k.b yes 4 3.b odd 2 1
35.2.k.b yes 4 105.w odd 12 1
175.2.o.a 4 15.d odd 2 1
175.2.o.a 4 105.w odd 12 1
175.2.o.b 4 15.e even 4 1
175.2.o.b 4 105.p even 6 1
245.2.f.a 4 21.g even 6 1
245.2.f.a 4 105.x even 12 1
245.2.f.b 4 21.h odd 6 1
245.2.f.b 4 105.w odd 12 1
245.2.l.a 4 21.h odd 6 1
245.2.l.a 4 105.k odd 4 1
245.2.l.b 4 21.c even 2 1
245.2.l.b 4 105.x even 12 1
315.2.bz.a 4 1.a even 1 1 trivial
315.2.bz.a 4 35.k even 12 1 inner
315.2.bz.b 4 5.c odd 4 1
315.2.bz.b 4 7.d odd 6 1
560.2.ci.a 4 60.l odd 4 1
560.2.ci.a 4 84.j odd 6 1
560.2.ci.b 4 12.b even 2 1
560.2.ci.b 4 420.br even 12 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{4} + 2T_{2}^{3} + 5T_{2}^{2} + 4T_{2} + 1 \) acting on \(S_{2}^{\mathrm{new}}(315, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} + 2 T^{3} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( T^{4} + 4 T^{3} + \cdots + 25 \) Copy content Toggle raw display
$7$ \( (T^{2} + 5 T + 7)^{2} \) Copy content Toggle raw display
$11$ \( T^{4} + 2 T^{3} + \cdots + 4 \) Copy content Toggle raw display
$13$ \( (T^{2} + 4 T + 8)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} + 8 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$19$ \( T^{4} + 2 T^{3} + \cdots + 4 \) Copy content Toggle raw display
$23$ \( T^{4} + 14 T^{3} + \cdots + 1 \) Copy content Toggle raw display
$29$ \( (T^{2} + 9)^{2} \) Copy content Toggle raw display
$31$ \( T^{4} + 12 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$37$ \( T^{4} + 12 T^{3} + \cdots + 576 \) Copy content Toggle raw display
$41$ \( T^{4} + 42T^{2} + 9 \) Copy content Toggle raw display
$43$ \( T^{4} + 6 T^{3} + \cdots + 1089 \) Copy content Toggle raw display
$47$ \( T^{4} + 6 T^{3} + \cdots + 36 \) Copy content Toggle raw display
$53$ \( T^{4} + 10 T^{3} + \cdots + 2500 \) Copy content Toggle raw display
$59$ \( T^{4} - 6 T^{3} + \cdots + 324 \) Copy content Toggle raw display
$61$ \( T^{4} + 12 T^{3} + \cdots + 169 \) Copy content Toggle raw display
$67$ \( T^{4} - 8 T^{3} + \cdots + 169 \) Copy content Toggle raw display
$71$ \( (T^{2} + 6 T + 6)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} + 144 T^{2} + \cdots + 2304 \) Copy content Toggle raw display
$79$ \( T^{4} + 6 T^{3} + \cdots + 484 \) Copy content Toggle raw display
$83$ \( T^{4} + 2 T^{3} + \cdots + 169 \) Copy content Toggle raw display
$89$ \( T^{4} + 16 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$97$ \( T^{4} - 4 T^{3} + \cdots + 8836 \) Copy content Toggle raw display
show more
show less