Properties

Label 775.2.e.b
Level $775$
Weight $2$
Character orbit 775.e
Analytic conductor $6.188$
Analytic rank $0$
Dimension $2$
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] = [775,2,Mod(501,775)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(775, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("775.501");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 775 = 5^{2} \cdot 31 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 775.e (of order \(3\), degree \(2\), 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: \(6.18840615665\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-3}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{9}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 155)
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-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 \(\zeta_{6}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 q^{2} + ( - 2 \zeta_{6} + 2) q^{3} + 2 q^{4} + ( - 4 \zeta_{6} + 4) q^{6} + ( - 4 \zeta_{6} + 4) q^{7} - \zeta_{6} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + 2 q^{2} + ( - 2 \zeta_{6} + 2) q^{3} + 2 q^{4} + ( - 4 \zeta_{6} + 4) q^{6} + ( - 4 \zeta_{6} + 4) q^{7} - \zeta_{6} q^{9} - 5 \zeta_{6} q^{11} + ( - 4 \zeta_{6} + 4) q^{12} + 6 \zeta_{6} q^{13} + ( - 8 \zeta_{6} + 8) q^{14} - 4 q^{16} + (4 \zeta_{6} - 4) q^{17} - 2 \zeta_{6} q^{18} + (4 \zeta_{6} - 4) q^{19} - 8 \zeta_{6} q^{21} - 10 \zeta_{6} q^{22} + 2 q^{23} + 12 \zeta_{6} q^{26} + 4 q^{27} + ( - 8 \zeta_{6} + 8) q^{28} - 3 q^{29} + ( - \zeta_{6} + 6) q^{31} - 8 q^{32} - 10 q^{33} + (8 \zeta_{6} - 8) q^{34} - 2 \zeta_{6} q^{36} + ( - 8 \zeta_{6} + 8) q^{37} + (8 \zeta_{6} - 8) q^{38} + 12 q^{39} + 3 \zeta_{6} q^{41} - 16 \zeta_{6} q^{42} - 10 \zeta_{6} q^{44} + 4 q^{46} + 8 q^{47} + (8 \zeta_{6} - 8) q^{48} - 9 \zeta_{6} q^{49} + 8 \zeta_{6} q^{51} + 12 \zeta_{6} q^{52} + 6 \zeta_{6} q^{53} + 8 q^{54} + 8 \zeta_{6} q^{57} - 6 q^{58} + (13 \zeta_{6} - 13) q^{59} + q^{61} + ( - 2 \zeta_{6} + 12) q^{62} - 4 q^{63} - 8 q^{64} - 20 q^{66} + 2 \zeta_{6} q^{67} + (8 \zeta_{6} - 8) q^{68} + ( - 4 \zeta_{6} + 4) q^{69} - 3 \zeta_{6} q^{71} - 4 \zeta_{6} q^{73} + ( - 16 \zeta_{6} + 16) q^{74} + (8 \zeta_{6} - 8) q^{76} - 20 q^{77} + 24 q^{78} + (3 \zeta_{6} - 3) q^{79} + ( - 11 \zeta_{6} + 11) q^{81} + 6 \zeta_{6} q^{82} + 4 \zeta_{6} q^{83} - 16 \zeta_{6} q^{84} + (6 \zeta_{6} - 6) q^{87} - 11 q^{89} + 24 q^{91} + 4 q^{92} + ( - 12 \zeta_{6} + 10) q^{93} + 16 q^{94} + (16 \zeta_{6} - 16) q^{96} - 18 \zeta_{6} q^{98} + (5 \zeta_{6} - 5) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 4 q^{2} + 2 q^{3} + 4 q^{4} + 4 q^{6} + 4 q^{7} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 4 q^{2} + 2 q^{3} + 4 q^{4} + 4 q^{6} + 4 q^{7} - q^{9} - 5 q^{11} + 4 q^{12} + 6 q^{13} + 8 q^{14} - 8 q^{16} - 4 q^{17} - 2 q^{18} - 4 q^{19} - 8 q^{21} - 10 q^{22} + 4 q^{23} + 12 q^{26} + 8 q^{27} + 8 q^{28} - 6 q^{29} + 11 q^{31} - 16 q^{32} - 20 q^{33} - 8 q^{34} - 2 q^{36} + 8 q^{37} - 8 q^{38} + 24 q^{39} + 3 q^{41} - 16 q^{42} - 10 q^{44} + 8 q^{46} + 16 q^{47} - 8 q^{48} - 9 q^{49} + 8 q^{51} + 12 q^{52} + 6 q^{53} + 16 q^{54} + 8 q^{57} - 12 q^{58} - 13 q^{59} + 2 q^{61} + 22 q^{62} - 8 q^{63} - 16 q^{64} - 40 q^{66} + 2 q^{67} - 8 q^{68} + 4 q^{69} - 3 q^{71} - 4 q^{73} + 16 q^{74} - 8 q^{76} - 40 q^{77} + 48 q^{78} - 3 q^{79} + 11 q^{81} + 6 q^{82} + 4 q^{83} - 16 q^{84} - 6 q^{87} - 22 q^{89} + 48 q^{91} + 8 q^{92} + 8 q^{93} + 32 q^{94} - 16 q^{96} - 18 q^{98} - 5 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/775\mathbb{Z}\right)^\times\).

\(n\) \(251\) \(652\)
\(\chi(n)\) \(-\zeta_{6}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
501.1
0.500000 + 0.866025i
0.500000 0.866025i
2.00000 1.00000 1.73205i 2.00000 0 2.00000 3.46410i 2.00000 3.46410i 0 −0.500000 0.866025i 0
676.1 2.00000 1.00000 + 1.73205i 2.00000 0 2.00000 + 3.46410i 2.00000 + 3.46410i 0 −0.500000 + 0.866025i 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
31.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 775.2.e.b 2
5.b even 2 1 155.2.e.a 2
5.c odd 4 2 775.2.o.b 4
31.c even 3 1 inner 775.2.e.b 2
155.i odd 6 1 4805.2.a.a 1
155.j even 6 1 155.2.e.a 2
155.j even 6 1 4805.2.a.c 1
155.o odd 12 2 775.2.o.b 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
155.2.e.a 2 5.b even 2 1
155.2.e.a 2 155.j even 6 1
775.2.e.b 2 1.a even 1 1 trivial
775.2.e.b 2 31.c even 3 1 inner
775.2.o.b 4 5.c odd 4 2
775.2.o.b 4 155.o odd 12 2
4805.2.a.a 1 155.i odd 6 1
4805.2.a.c 1 155.j even 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2} - 2 \) acting on \(S_{2}^{\mathrm{new}}(775, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T - 2)^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 2T + 4 \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} - 4T + 16 \) Copy content Toggle raw display
$11$ \( T^{2} + 5T + 25 \) Copy content Toggle raw display
$13$ \( T^{2} - 6T + 36 \) Copy content Toggle raw display
$17$ \( T^{2} + 4T + 16 \) Copy content Toggle raw display
$19$ \( T^{2} + 4T + 16 \) Copy content Toggle raw display
$23$ \( (T - 2)^{2} \) Copy content Toggle raw display
$29$ \( (T + 3)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} - 11T + 31 \) Copy content Toggle raw display
$37$ \( T^{2} - 8T + 64 \) Copy content Toggle raw display
$41$ \( T^{2} - 3T + 9 \) Copy content Toggle raw display
$43$ \( T^{2} \) Copy content Toggle raw display
$47$ \( (T - 8)^{2} \) Copy content Toggle raw display
$53$ \( T^{2} - 6T + 36 \) Copy content Toggle raw display
$59$ \( T^{2} + 13T + 169 \) Copy content Toggle raw display
$61$ \( (T - 1)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} - 2T + 4 \) Copy content Toggle raw display
$71$ \( T^{2} + 3T + 9 \) Copy content Toggle raw display
$73$ \( T^{2} + 4T + 16 \) Copy content Toggle raw display
$79$ \( T^{2} + 3T + 9 \) Copy content Toggle raw display
$83$ \( T^{2} - 4T + 16 \) Copy content Toggle raw display
$89$ \( (T + 11)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} \) Copy content Toggle raw display
show more
show less