Properties

Label 1950.2.bc.b
Level $1950$
Weight $2$
Character orbit 1950.bc
Analytic conductor $15.571$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1950,2,Mod(751,1950)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1950, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 0, 5]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1950.751");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1950 = 2 \cdot 3 \cdot 5^{2} \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1950.bc (of order \(6\), 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: \(15.5708283941\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{6})\)
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 390)
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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.

\(f(q)\) \(=\) \( q + ( - \zeta_{12}^{3} + \zeta_{12}) q^{2} - \zeta_{12}^{2} q^{3} + ( - \zeta_{12}^{2} + 1) q^{4} - \zeta_{12} q^{6} + 2 \zeta_{12} q^{7} - \zeta_{12}^{3} q^{8} + (\zeta_{12}^{2} - 1) q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + ( - \zeta_{12}^{3} + \zeta_{12}) q^{2} - \zeta_{12}^{2} q^{3} + ( - \zeta_{12}^{2} + 1) q^{4} - \zeta_{12} q^{6} + 2 \zeta_{12} q^{7} - \zeta_{12}^{3} q^{8} + (\zeta_{12}^{2} - 1) q^{9} + ( - 3 \zeta_{12}^{3} - 2 \zeta_{12}^{2} + 3 \zeta_{12} + 4) q^{11} - q^{12} + ( - 4 \zeta_{12}^{2} + 1) q^{13} + 2 q^{14} - \zeta_{12}^{2} q^{16} + (4 \zeta_{12}^{2} - 4) q^{17} + \zeta_{12}^{3} q^{18} + (2 \zeta_{12}^{2} + 4 \zeta_{12} + 2) q^{19} - 2 \zeta_{12}^{3} q^{21} + ( - 4 \zeta_{12}^{3} - 3 \zeta_{12}^{2} + 2 \zeta_{12} + 3) q^{22} + (\zeta_{12}^{3} + 2 \zeta_{12}^{2} + \zeta_{12}) q^{23} + (\zeta_{12}^{3} - \zeta_{12}) q^{24} + ( - \zeta_{12}^{3} - 3 \zeta_{12}) q^{26} + q^{27} + ( - 2 \zeta_{12}^{3} + 2 \zeta_{12}) q^{28} + (\zeta_{12}^{3} - 2 \zeta_{12}^{2} + \zeta_{12}) q^{29} + (2 \zeta_{12}^{2} - 1) q^{31} - \zeta_{12} q^{32} + ( - 2 \zeta_{12}^{2} - 3 \zeta_{12} - 2) q^{33} + 4 \zeta_{12}^{3} q^{34} + \zeta_{12}^{2} q^{36} + (4 \zeta_{12}^{3} + 3 \zeta_{12}^{2} - 4 \zeta_{12} - 6) q^{37} + ( - 2 \zeta_{12}^{3} + 4 \zeta_{12} + 4) q^{38} + (3 \zeta_{12}^{2} - 4) q^{39} + ( - 2 \zeta_{12}^{3} + 2 \zeta_{12}) q^{41} - 2 \zeta_{12}^{2} q^{42} + ( - 8 \zeta_{12}^{3} - 5 \zeta_{12}^{2} + 4 \zeta_{12} + 5) q^{43} + ( - 3 \zeta_{12}^{3} - 4 \zeta_{12}^{2} + 2) q^{44} + (\zeta_{12}^{2} + 2 \zeta_{12} + 1) q^{46} + ( - 7 \zeta_{12}^{3} + 4 \zeta_{12}^{2} - 2) q^{47} + (\zeta_{12}^{2} - 1) q^{48} - 3 \zeta_{12}^{2} q^{49} + 4 q^{51} + ( - \zeta_{12}^{2} - 3) q^{52} + (4 \zeta_{12}^{3} - 8 \zeta_{12} + 6) q^{53} + ( - \zeta_{12}^{3} + \zeta_{12}) q^{54} + ( - 2 \zeta_{12}^{2} + 2) q^{56} + ( - 4 \zeta_{12}^{3} - 4 \zeta_{12}^{2} + 2) q^{57} + (\zeta_{12}^{2} - 2 \zeta_{12} + 1) q^{58} + (2 \zeta_{12}^{2} + 5 \zeta_{12} + 2) q^{59} + ( - 12 \zeta_{12}^{3} + 6 \zeta_{12}) q^{61} + (\zeta_{12}^{3} + \zeta_{12}) q^{62} + (2 \zeta_{12}^{3} - 2 \zeta_{12}) q^{63} - q^{64} + (2 \zeta_{12}^{3} - 4 \zeta_{12} - 3) q^{66} + ( - 8 \zeta_{12}^{3} - 2 \zeta_{12}^{2} + 8 \zeta_{12} + 4) q^{67} + 4 \zeta_{12}^{2} q^{68} + ( - 2 \zeta_{12}^{3} - 2 \zeta_{12}^{2} + \zeta_{12} + 2) q^{69} + ( - 6 \zeta_{12}^{2} - 2 \zeta_{12} - 6) q^{71} + \zeta_{12} q^{72} + 2 \zeta_{12}^{3} q^{73} + (6 \zeta_{12}^{3} + 4 \zeta_{12}^{2} - 3 \zeta_{12} - 4) q^{74} + ( - 4 \zeta_{12}^{3} - 2 \zeta_{12}^{2} + 4 \zeta_{12} + 4) q^{76} + ( - 4 \zeta_{12}^{3} + 8 \zeta_{12} + 6) q^{77} + (4 \zeta_{12}^{3} - \zeta_{12}) q^{78} + (4 \zeta_{12}^{3} - 8 \zeta_{12} - 7) q^{79} - \zeta_{12}^{2} q^{81} + ( - 2 \zeta_{12}^{2} + 2) q^{82} + (2 \zeta_{12}^{3} + 8 \zeta_{12}^{2} - 4) q^{83} - 2 \zeta_{12} q^{84} + ( - 5 \zeta_{12}^{3} - 8 \zeta_{12}^{2} + 4) q^{86} + ( - 2 \zeta_{12}^{3} + 2 \zeta_{12}^{2} + \zeta_{12} - 2) q^{87} + ( - 2 \zeta_{12}^{3} - 3 \zeta_{12}^{2} - 2 \zeta_{12}) q^{88} + (4 \zeta_{12}^{3} - 2 \zeta_{12}^{2} - 4 \zeta_{12} + 4) q^{89} + ( - 8 \zeta_{12}^{3} + 2 \zeta_{12}) q^{91} + ( - \zeta_{12}^{3} + 2 \zeta_{12} + 2) q^{92} + ( - \zeta_{12}^{2} + 2) q^{93} + (2 \zeta_{12}^{3} - 7 \zeta_{12}^{2} + 2 \zeta_{12}) q^{94} + \zeta_{12}^{3} q^{96} + (2 \zeta_{12}^{2} - 4 \zeta_{12} + 2) q^{97} - 3 \zeta_{12} q^{98} + (3 \zeta_{12}^{3} + 4 \zeta_{12}^{2} - 2) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 2 q^{3} + 2 q^{4} - 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 2 q^{3} + 2 q^{4} - 2 q^{9} + 12 q^{11} - 4 q^{12} - 4 q^{13} + 8 q^{14} - 2 q^{16} - 8 q^{17} + 12 q^{19} + 6 q^{22} + 4 q^{23} + 4 q^{27} - 4 q^{29} - 12 q^{33} + 2 q^{36} - 18 q^{37} + 16 q^{38} - 10 q^{39} - 4 q^{42} + 10 q^{43} + 6 q^{46} - 2 q^{48} - 6 q^{49} + 16 q^{51} - 14 q^{52} + 24 q^{53} + 4 q^{56} + 6 q^{58} + 12 q^{59} - 4 q^{64} - 12 q^{66} + 12 q^{67} + 8 q^{68} + 4 q^{69} - 36 q^{71} - 8 q^{74} + 12 q^{76} + 24 q^{77} - 28 q^{79} - 2 q^{81} + 4 q^{82} - 4 q^{87} - 6 q^{88} + 12 q^{89} + 8 q^{92} + 6 q^{93} - 14 q^{94} + 12 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1950\mathbb{Z}\right)^\times\).

\(n\) \(301\) \(1301\) \(1327\)
\(\chi(n)\) \(1 - \zeta_{12}^{2}\) \(1\) \(1\)

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 \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
751.1
−0.866025 0.500000i
0.866025 + 0.500000i
−0.866025 + 0.500000i
0.866025 0.500000i
−0.866025 + 0.500000i −0.500000 0.866025i 0.500000 0.866025i 0 0.866025 + 0.500000i −1.73205 1.00000i 1.00000i −0.500000 + 0.866025i 0
751.2 0.866025 0.500000i −0.500000 0.866025i 0.500000 0.866025i 0 −0.866025 0.500000i 1.73205 + 1.00000i 1.00000i −0.500000 + 0.866025i 0
901.1 −0.866025 0.500000i −0.500000 + 0.866025i 0.500000 + 0.866025i 0 0.866025 0.500000i −1.73205 + 1.00000i 1.00000i −0.500000 0.866025i 0
901.2 0.866025 + 0.500000i −0.500000 + 0.866025i 0.500000 + 0.866025i 0 −0.866025 + 0.500000i 1.73205 1.00000i 1.00000i −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
13.e even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1950.2.bc.b 4
5.b even 2 1 390.2.bb.b 4
5.c odd 4 1 1950.2.y.c 4
5.c odd 4 1 1950.2.y.f 4
13.e even 6 1 inner 1950.2.bc.b 4
15.d odd 2 1 1170.2.bs.e 4
65.l even 6 1 390.2.bb.b 4
65.l even 6 1 5070.2.b.o 4
65.n even 6 1 5070.2.b.o 4
65.r odd 12 1 1950.2.y.c 4
65.r odd 12 1 1950.2.y.f 4
65.s odd 12 1 5070.2.a.y 2
65.s odd 12 1 5070.2.a.bg 2
195.y odd 6 1 1170.2.bs.e 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
390.2.bb.b 4 5.b even 2 1
390.2.bb.b 4 65.l even 6 1
1170.2.bs.e 4 15.d odd 2 1
1170.2.bs.e 4 195.y odd 6 1
1950.2.y.c 4 5.c odd 4 1
1950.2.y.c 4 65.r odd 12 1
1950.2.y.f 4 5.c odd 4 1
1950.2.y.f 4 65.r odd 12 1
1950.2.bc.b 4 1.a even 1 1 trivial
1950.2.bc.b 4 13.e even 6 1 inner
5070.2.a.y 2 65.s odd 12 1
5070.2.a.bg 2 65.s odd 12 1
5070.2.b.o 4 65.l even 6 1
5070.2.b.o 4 65.n even 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{4} - 4T_{7}^{2} + 16 \) acting on \(S_{2}^{\mathrm{new}}(1950, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} - T^{2} + 1 \) Copy content Toggle raw display
$3$ \( (T^{2} + T + 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( T^{4} - 4T^{2} + 16 \) Copy content Toggle raw display
$11$ \( T^{4} - 12 T^{3} + 51 T^{2} - 36 T + 9 \) Copy content Toggle raw display
$13$ \( (T^{2} + 2 T + 13)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} + 4 T + 16)^{2} \) Copy content Toggle raw display
$19$ \( T^{4} - 12 T^{3} + 44 T^{2} + 48 T + 16 \) Copy content Toggle raw display
$23$ \( T^{4} - 4 T^{3} + 15 T^{2} - 4 T + 1 \) Copy content Toggle raw display
$29$ \( T^{4} + 4 T^{3} + 15 T^{2} + 4 T + 1 \) Copy content Toggle raw display
$31$ \( (T^{2} + 3)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} + 18 T^{3} + 119 T^{2} + \cdots + 121 \) Copy content Toggle raw display
$41$ \( T^{4} - 4T^{2} + 16 \) Copy content Toggle raw display
$43$ \( T^{4} - 10 T^{3} + 123 T^{2} + \cdots + 529 \) Copy content Toggle raw display
$47$ \( T^{4} + 122T^{2} + 1369 \) Copy content Toggle raw display
$53$ \( (T^{2} - 12 T - 12)^{2} \) Copy content Toggle raw display
$59$ \( T^{4} - 12 T^{3} + 35 T^{2} + \cdots + 169 \) Copy content Toggle raw display
$61$ \( T^{4} + 108 T^{2} + 11664 \) Copy content Toggle raw display
$67$ \( T^{4} - 12 T^{3} - 4 T^{2} + \cdots + 2704 \) Copy content Toggle raw display
$71$ \( T^{4} + 36 T^{3} + 536 T^{2} + \cdots + 10816 \) Copy content Toggle raw display
$73$ \( (T^{2} + 4)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 14 T + 1)^{2} \) Copy content Toggle raw display
$83$ \( T^{4} + 104T^{2} + 1936 \) Copy content Toggle raw display
$89$ \( T^{4} - 12 T^{3} + 44 T^{2} + 48 T + 16 \) Copy content Toggle raw display
$97$ \( T^{4} - 12 T^{3} + 44 T^{2} + 48 T + 16 \) Copy content Toggle raw display
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