Properties

Label 975.2.bt.c
Level $975$
Weight $2$
Character orbit 975.bt
Analytic conductor $7.785$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $8$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [975,2,Mod(68,975)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(975, base_ring=CyclotomicField(12))
 
chi = DirichletCharacter(H, H._module([6, 9, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("975.68");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 975 = 3 \cdot 5^{2} \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 975.bt (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: \(7.78541419707\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(2\) over \(\Q(\zeta_{12})\)
Coefficient field: \(\Q(\zeta_{24})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
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 \(\zeta_{24}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\zeta_{24}^{6} + \cdots - \zeta_{24}^{2}) q^{2}+ \cdots + (2 \zeta_{24}^{7} + \cdots - \zeta_{24}^{2}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{24}^{6} + \cdots - \zeta_{24}^{2}) q^{2}+ \cdots + ( - 8 \zeta_{24}^{6} + \cdots + 2 \zeta_{24}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 4 q^{2} + 4 q^{3} + 8 q^{6} + 16 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 4 q^{2} + 4 q^{3} + 8 q^{6} + 16 q^{8} - 16 q^{16} - 4 q^{17} + 8 q^{18} - 8 q^{21} + 8 q^{23} - 8 q^{27} - 24 q^{31} - 8 q^{33} + 16 q^{38} + 4 q^{42} + 16 q^{46} + 24 q^{47} + 16 q^{48} - 16 q^{51} - 48 q^{53} + 16 q^{57} + 44 q^{61} + 12 q^{62} - 8 q^{63} + 32 q^{66} + 8 q^{72} + 16 q^{77} - 28 q^{78} - 28 q^{81} - 48 q^{83} + 4 q^{87} - 28 q^{91} - 12 q^{93} + 24 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/975\mathbb{Z}\right)^\times\).

\(n\) \(301\) \(326\) \(352\)
\(\chi(n)\) \(-1 + \zeta_{24}^{4}\) \(-1\) \(\zeta_{24}^{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
68.1
−0.258819 + 0.965926i
0.258819 0.965926i
−0.965926 0.258819i
0.965926 + 0.258819i
−0.965926 + 0.258819i
0.965926 0.258819i
−0.258819 0.965926i
0.258819 + 0.965926i
0.366025 1.36603i 1.10721 + 1.33195i 0 0 2.22474 1.02494i 0.258819 + 0.965926i 2.00000 2.00000i −0.548188 + 2.94949i 0
68.2 0.366025 1.36603i 1.62484 0.599900i 0 0 −0.224745 2.43916i −0.258819 0.965926i 2.00000 2.00000i 2.28024 1.94949i 0
107.1 −1.36603 0.366025i −1.33195 + 1.10721i 0 0 2.22474 1.02494i 0.965926 0.258819i 2.00000 + 2.00000i 0.548188 2.94949i 0
107.2 −1.36603 0.366025i 0.599900 + 1.62484i 0 0 −0.224745 2.43916i −0.965926 + 0.258819i 2.00000 + 2.00000i −2.28024 + 1.94949i 0
893.1 −1.36603 + 0.366025i −1.33195 1.10721i 0 0 2.22474 + 1.02494i 0.965926 + 0.258819i 2.00000 2.00000i 0.548188 + 2.94949i 0
893.2 −1.36603 + 0.366025i 0.599900 1.62484i 0 0 −0.224745 + 2.43916i −0.965926 0.258819i 2.00000 2.00000i −2.28024 1.94949i 0
932.1 0.366025 + 1.36603i 1.10721 1.33195i 0 0 2.22474 + 1.02494i 0.258819 0.965926i 2.00000 + 2.00000i −0.548188 2.94949i 0
932.2 0.366025 + 1.36603i 1.62484 + 0.599900i 0 0 −0.224745 + 2.43916i −0.258819 + 0.965926i 2.00000 + 2.00000i 2.28024 + 1.94949i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 68.2
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.c odd 4 1 inner
13.c even 3 1 inner
15.d odd 2 1 inner
15.e even 4 1 inner
65.q odd 12 1 inner
195.x odd 6 1 inner
195.bl even 12 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 975.2.bt.c 8
3.b odd 2 1 975.2.bt.i yes 8
5.b even 2 1 975.2.bt.i yes 8
5.c odd 4 1 inner 975.2.bt.c 8
5.c odd 4 1 975.2.bt.i yes 8
13.c even 3 1 inner 975.2.bt.c 8
15.d odd 2 1 inner 975.2.bt.c 8
15.e even 4 1 inner 975.2.bt.c 8
15.e even 4 1 975.2.bt.i yes 8
39.i odd 6 1 975.2.bt.i yes 8
65.n even 6 1 975.2.bt.i yes 8
65.q odd 12 1 inner 975.2.bt.c 8
65.q odd 12 1 975.2.bt.i yes 8
195.x odd 6 1 inner 975.2.bt.c 8
195.bl even 12 1 inner 975.2.bt.c 8
195.bl even 12 1 975.2.bt.i yes 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
975.2.bt.c 8 1.a even 1 1 trivial
975.2.bt.c 8 5.c odd 4 1 inner
975.2.bt.c 8 13.c even 3 1 inner
975.2.bt.c 8 15.d odd 2 1 inner
975.2.bt.c 8 15.e even 4 1 inner
975.2.bt.c 8 65.q odd 12 1 inner
975.2.bt.c 8 195.x odd 6 1 inner
975.2.bt.c 8 195.bl even 12 1 inner
975.2.bt.i yes 8 3.b odd 2 1
975.2.bt.i yes 8 5.b even 2 1
975.2.bt.i yes 8 5.c odd 4 1
975.2.bt.i yes 8 15.e even 4 1
975.2.bt.i yes 8 39.i odd 6 1
975.2.bt.i yes 8 65.n even 6 1
975.2.bt.i yes 8 65.q odd 12 1
975.2.bt.i yes 8 195.bl even 12 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(975, [\chi])\):

\( T_{2}^{4} + 2T_{2}^{3} + 2T_{2}^{2} + 4T_{2} + 4 \) Copy content Toggle raw display
\( T_{7}^{8} - T_{7}^{4} + 1 \) Copy content Toggle raw display
\( T_{59}^{4} + 2T_{59}^{2} + 4 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} + 2 T^{3} + 2 T^{2} + \cdots + 4)^{2} \) Copy content Toggle raw display
$3$ \( T^{8} - 4 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$5$ \( T^{8} \) Copy content Toggle raw display
$7$ \( T^{8} - T^{4} + 1 \) Copy content Toggle raw display
$11$ \( (T^{4} - 8 T^{2} + 64)^{2} \) Copy content Toggle raw display
$13$ \( T^{8} - 337 T^{4} + 28561 \) Copy content Toggle raw display
$17$ \( (T^{4} + 2 T^{3} + 2 T^{2} + \cdots + 4)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 4 T^{2} + 16)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} - 4 T^{3} + 8 T^{2} + \cdots + 64)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$31$ \( (T + 3)^{8} \) Copy content Toggle raw display
$37$ \( T^{8} - 256 T^{4} + 65536 \) Copy content Toggle raw display
$41$ \( (T^{4} - 98 T^{2} + 9604)^{2} \) Copy content Toggle raw display
$43$ \( T^{8} - 2401 T^{4} + 5764801 \) Copy content Toggle raw display
$47$ \( (T^{2} - 6 T + 18)^{4} \) Copy content Toggle raw display
$53$ \( (T^{2} + 12 T + 72)^{4} \) Copy content Toggle raw display
$59$ \( (T^{4} + 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} - 11 T + 121)^{4} \) Copy content Toggle raw display
$67$ \( T^{8} - 14641 T^{4} + 214358881 \) Copy content Toggle raw display
$71$ \( (T^{4} - 98 T^{2} + 9604)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 50625)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 81)^{4} \) Copy content Toggle raw display
$83$ \( (T^{2} + 12 T + 72)^{4} \) Copy content Toggle raw display
$89$ \( (T^{4} + 242 T^{2} + 58564)^{2} \) Copy content Toggle raw display
$97$ \( T^{8} - T^{4} + 1 \) Copy content Toggle raw display
show more
show less