Properties

Label 2850.2.a.bh
Level $2850$
Weight $2$
Character orbit 2850.a
Self dual yes
Analytic conductor $22.757$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $1$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2850,2,Mod(1,2850)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2850, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2850.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2850 = 2 \cdot 3 \cdot 5^{2} \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2850.a (trivial)

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: yes
Analytic conductor: \(22.7573645761\)
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: \( x^{2} - 3 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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 \(\beta = \sqrt{3}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + q^{2} - q^{3} + q^{4} - q^{6} + (\beta + 1) q^{7} + q^{8} + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + q^{2} - q^{3} + q^{4} - q^{6} + (\beta + 1) q^{7} + q^{8} + q^{9} + 3 \beta q^{11} - q^{12} + (\beta + 3) q^{13} + (\beta + 1) q^{14} + q^{16} + ( - \beta - 1) q^{17} + q^{18} + q^{19} + ( - \beta - 1) q^{21} + 3 \beta q^{22} + (2 \beta + 5) q^{23} - q^{24} + (\beta + 3) q^{26} - q^{27} + (\beta + 1) q^{28} + ( - 3 \beta - 4) q^{29} + ( - 4 \beta + 1) q^{31} + q^{32} - 3 \beta q^{33} + ( - \beta - 1) q^{34} + q^{36} + ( - 4 \beta - 2) q^{37} + q^{38} + ( - \beta - 3) q^{39} + ( - \beta - 1) q^{42} + (\beta + 7) q^{43} + 3 \beta q^{44} + (2 \beta + 5) q^{46} - 2 \beta q^{47} - q^{48} + (2 \beta - 3) q^{49} + (\beta + 1) q^{51} + (\beta + 3) q^{52} + ( - 5 \beta + 4) q^{53} - q^{54} + (\beta + 1) q^{56} - q^{57} + ( - 3 \beta - 4) q^{58} + (3 \beta - 3) q^{59} + ( - \beta + 10) q^{61} + ( - 4 \beta + 1) q^{62} + (\beta + 1) q^{63} + q^{64} - 3 \beta q^{66} - 3 \beta q^{67} + ( - \beta - 1) q^{68} + ( - 2 \beta - 5) q^{69} + ( - 3 \beta - 5) q^{71} + q^{72} + (2 \beta + 11) q^{73} + ( - 4 \beta - 2) q^{74} + q^{76} + (3 \beta + 9) q^{77} + ( - \beta - 3) q^{78} + (4 \beta - 1) q^{79} + q^{81} + (5 \beta + 8) q^{83} + ( - \beta - 1) q^{84} + (\beta + 7) q^{86} + (3 \beta + 4) q^{87} + 3 \beta q^{88} + (4 \beta - 3) q^{89} + (4 \beta + 6) q^{91} + (2 \beta + 5) q^{92} + (4 \beta - 1) q^{93} - 2 \beta q^{94} - q^{96} + (7 \beta + 5) q^{97} + (2 \beta - 3) q^{98} + 3 \beta q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 2 q^{2} - 2 q^{3} + 2 q^{4} - 2 q^{6} + 2 q^{7} + 2 q^{8} + 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 2 q^{2} - 2 q^{3} + 2 q^{4} - 2 q^{6} + 2 q^{7} + 2 q^{8} + 2 q^{9} - 2 q^{12} + 6 q^{13} + 2 q^{14} + 2 q^{16} - 2 q^{17} + 2 q^{18} + 2 q^{19} - 2 q^{21} + 10 q^{23} - 2 q^{24} + 6 q^{26} - 2 q^{27} + 2 q^{28} - 8 q^{29} + 2 q^{31} + 2 q^{32} - 2 q^{34} + 2 q^{36} - 4 q^{37} + 2 q^{38} - 6 q^{39} - 2 q^{42} + 14 q^{43} + 10 q^{46} - 2 q^{48} - 6 q^{49} + 2 q^{51} + 6 q^{52} + 8 q^{53} - 2 q^{54} + 2 q^{56} - 2 q^{57} - 8 q^{58} - 6 q^{59} + 20 q^{61} + 2 q^{62} + 2 q^{63} + 2 q^{64} - 2 q^{68} - 10 q^{69} - 10 q^{71} + 2 q^{72} + 22 q^{73} - 4 q^{74} + 2 q^{76} + 18 q^{77} - 6 q^{78} - 2 q^{79} + 2 q^{81} + 16 q^{83} - 2 q^{84} + 14 q^{86} + 8 q^{87} - 6 q^{89} + 12 q^{91} + 10 q^{92} - 2 q^{93} - 2 q^{96} + 10 q^{97} - 6 q^{98}+O(q^{100}) \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
−1.73205
1.73205
1.00000 −1.00000 1.00000 0 −1.00000 −0.732051 1.00000 1.00000 0
1.2 1.00000 −1.00000 1.00000 0 −1.00000 2.73205 1.00000 1.00000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)
\(3\) \(1\)
\(5\) \(-1\)
\(19\) \(-1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2850.2.a.bh yes 2
3.b odd 2 1 8550.2.a.bt 2
5.b even 2 1 2850.2.a.be 2
5.c odd 4 2 2850.2.d.u 4
15.d odd 2 1 8550.2.a.bz 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2850.2.a.be 2 5.b even 2 1
2850.2.a.bh yes 2 1.a even 1 1 trivial
2850.2.d.u 4 5.c odd 4 2
8550.2.a.bt 2 3.b odd 2 1
8550.2.a.bz 2 15.d odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(2850))\):

\( T_{7}^{2} - 2T_{7} - 2 \) Copy content Toggle raw display
\( T_{11}^{2} - 27 \) Copy content Toggle raw display
\( T_{13}^{2} - 6T_{13} + 6 \) Copy content Toggle raw display
\( T_{23}^{2} - 10T_{23} + 13 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T - 1)^{2} \) Copy content Toggle raw display
$3$ \( (T + 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} - 2T - 2 \) Copy content Toggle raw display
$11$ \( T^{2} - 27 \) Copy content Toggle raw display
$13$ \( T^{2} - 6T + 6 \) Copy content Toggle raw display
$17$ \( T^{2} + 2T - 2 \) Copy content Toggle raw display
$19$ \( (T - 1)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} - 10T + 13 \) Copy content Toggle raw display
$29$ \( T^{2} + 8T - 11 \) Copy content Toggle raw display
$31$ \( T^{2} - 2T - 47 \) Copy content Toggle raw display
$37$ \( T^{2} + 4T - 44 \) Copy content Toggle raw display
$41$ \( T^{2} \) Copy content Toggle raw display
$43$ \( T^{2} - 14T + 46 \) Copy content Toggle raw display
$47$ \( T^{2} - 12 \) Copy content Toggle raw display
$53$ \( T^{2} - 8T - 59 \) Copy content Toggle raw display
$59$ \( T^{2} + 6T - 18 \) Copy content Toggle raw display
$61$ \( T^{2} - 20T + 97 \) Copy content Toggle raw display
$67$ \( T^{2} - 27 \) Copy content Toggle raw display
$71$ \( T^{2} + 10T - 2 \) Copy content Toggle raw display
$73$ \( T^{2} - 22T + 109 \) Copy content Toggle raw display
$79$ \( T^{2} + 2T - 47 \) Copy content Toggle raw display
$83$ \( T^{2} - 16T - 11 \) Copy content Toggle raw display
$89$ \( T^{2} + 6T - 39 \) Copy content Toggle raw display
$97$ \( T^{2} - 10T - 122 \) Copy content Toggle raw display
show more
show less