# Properties

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

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [1950,2,Mod(451,1950)]

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, 4]))

N = Newforms(chi, 2, names="a")

//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code

chi := DirichletCharacter("1950.451");

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.i (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: $$15.5708283941$$ 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: $$x^{2} - x + 1$$ x^2 - x + 1 Coefficient ring: $$\Z[a_1, a_2]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 78) 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.

 $$f(q)$$ $$=$$ $$q + (\zeta_{6} - 1) q^{2} + (\zeta_{6} - 1) q^{3} - \zeta_{6} q^{4} - \zeta_{6} q^{6} - 2 \zeta_{6} q^{7} + q^{8} - \zeta_{6} q^{9} +O(q^{10})$$ q + (z - 1) * q^2 + (z - 1) * q^3 - z * q^4 - z * q^6 - 2*z * q^7 + q^8 - z * q^9 $$q + (\zeta_{6} - 1) q^{2} + (\zeta_{6} - 1) q^{3} - \zeta_{6} q^{4} - \zeta_{6} q^{6} - 2 \zeta_{6} q^{7} + q^{8} - \zeta_{6} q^{9} + (2 \zeta_{6} - 2) q^{11} + q^{12} + ( - 3 \zeta_{6} - 1) q^{13} + 2 q^{14} + (\zeta_{6} - 1) q^{16} + 5 \zeta_{6} q^{17} + q^{18} + 2 \zeta_{6} q^{19} + 2 q^{21} - 2 \zeta_{6} q^{22} + ( - 6 \zeta_{6} + 6) q^{23} + (\zeta_{6} - 1) q^{24} + ( - \zeta_{6} + 4) q^{26} + q^{27} + (2 \zeta_{6} - 2) q^{28} + ( - 9 \zeta_{6} + 9) q^{29} - 4 q^{31} - \zeta_{6} q^{32} - 2 \zeta_{6} q^{33} - 5 q^{34} + (\zeta_{6} - 1) q^{36} + (11 \zeta_{6} - 11) q^{37} - 2 q^{38} + ( - \zeta_{6} + 4) q^{39} + (5 \zeta_{6} - 5) q^{41} + (2 \zeta_{6} - 2) q^{42} + 10 \zeta_{6} q^{43} + 2 q^{44} + 6 \zeta_{6} q^{46} - 2 q^{47} - \zeta_{6} q^{48} + ( - 3 \zeta_{6} + 3) q^{49} - 5 q^{51} + (4 \zeta_{6} - 3) q^{52} + q^{53} + (\zeta_{6} - 1) q^{54} - 2 \zeta_{6} q^{56} - 2 q^{57} + 9 \zeta_{6} q^{58} + 8 \zeta_{6} q^{59} + 11 \zeta_{6} q^{61} + ( - 4 \zeta_{6} + 4) q^{62} + (2 \zeta_{6} - 2) q^{63} + q^{64} + 2 q^{66} + ( - 2 \zeta_{6} + 2) q^{67} + ( - 5 \zeta_{6} + 5) q^{68} + 6 \zeta_{6} q^{69} + 14 \zeta_{6} q^{71} - \zeta_{6} q^{72} + 13 q^{73} - 11 \zeta_{6} q^{74} + ( - 2 \zeta_{6} + 2) q^{76} + 4 q^{77} + (4 \zeta_{6} - 3) q^{78} - 4 q^{79} + (\zeta_{6} - 1) q^{81} - 5 \zeta_{6} q^{82} - 6 q^{83} - 2 \zeta_{6} q^{84} - 10 q^{86} + 9 \zeta_{6} q^{87} + (2 \zeta_{6} - 2) q^{88} + (2 \zeta_{6} - 2) q^{89} + (8 \zeta_{6} - 6) q^{91} - 6 q^{92} + ( - 4 \zeta_{6} + 4) q^{93} + ( - 2 \zeta_{6} + 2) q^{94} + q^{96} - 2 \zeta_{6} q^{97} + 3 \zeta_{6} q^{98} + 2 q^{99} +O(q^{100})$$ q + (z - 1) * q^2 + (z - 1) * q^3 - z * q^4 - z * q^6 - 2*z * q^7 + q^8 - z * q^9 + (2*z - 2) * q^11 + q^12 + (-3*z - 1) * q^13 + 2 * q^14 + (z - 1) * q^16 + 5*z * q^17 + q^18 + 2*z * q^19 + 2 * q^21 - 2*z * q^22 + (-6*z + 6) * q^23 + (z - 1) * q^24 + (-z + 4) * q^26 + q^27 + (2*z - 2) * q^28 + (-9*z + 9) * q^29 - 4 * q^31 - z * q^32 - 2*z * q^33 - 5 * q^34 + (z - 1) * q^36 + (11*z - 11) * q^37 - 2 * q^38 + (-z + 4) * q^39 + (5*z - 5) * q^41 + (2*z - 2) * q^42 + 10*z * q^43 + 2 * q^44 + 6*z * q^46 - 2 * q^47 - z * q^48 + (-3*z + 3) * q^49 - 5 * q^51 + (4*z - 3) * q^52 + q^53 + (z - 1) * q^54 - 2*z * q^56 - 2 * q^57 + 9*z * q^58 + 8*z * q^59 + 11*z * q^61 + (-4*z + 4) * q^62 + (2*z - 2) * q^63 + q^64 + 2 * q^66 + (-2*z + 2) * q^67 + (-5*z + 5) * q^68 + 6*z * q^69 + 14*z * q^71 - z * q^72 + 13 * q^73 - 11*z * q^74 + (-2*z + 2) * q^76 + 4 * q^77 + (4*z - 3) * q^78 - 4 * q^79 + (z - 1) * q^81 - 5*z * q^82 - 6 * q^83 - 2*z * q^84 - 10 * q^86 + 9*z * q^87 + (2*z - 2) * q^88 + (2*z - 2) * q^89 + (8*z - 6) * q^91 - 6 * q^92 + (-4*z + 4) * q^93 + (-2*z + 2) * q^94 + q^96 - 2*z * q^97 + 3*z * q^98 + 2 * q^99 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q - q^{2} - q^{3} - q^{4} - q^{6} - 2 q^{7} + 2 q^{8} - q^{9}+O(q^{10})$$ 2 * q - q^2 - q^3 - q^4 - q^6 - 2 * q^7 + 2 * q^8 - q^9 $$2 q - q^{2} - q^{3} - q^{4} - q^{6} - 2 q^{7} + 2 q^{8} - q^{9} - 2 q^{11} + 2 q^{12} - 5 q^{13} + 4 q^{14} - q^{16} + 5 q^{17} + 2 q^{18} + 2 q^{19} + 4 q^{21} - 2 q^{22} + 6 q^{23} - q^{24} + 7 q^{26} + 2 q^{27} - 2 q^{28} + 9 q^{29} - 8 q^{31} - q^{32} - 2 q^{33} - 10 q^{34} - q^{36} - 11 q^{37} - 4 q^{38} + 7 q^{39} - 5 q^{41} - 2 q^{42} + 10 q^{43} + 4 q^{44} + 6 q^{46} - 4 q^{47} - q^{48} + 3 q^{49} - 10 q^{51} - 2 q^{52} + 2 q^{53} - q^{54} - 2 q^{56} - 4 q^{57} + 9 q^{58} + 8 q^{59} + 11 q^{61} + 4 q^{62} - 2 q^{63} + 2 q^{64} + 4 q^{66} + 2 q^{67} + 5 q^{68} + 6 q^{69} + 14 q^{71} - q^{72} + 26 q^{73} - 11 q^{74} + 2 q^{76} + 8 q^{77} - 2 q^{78} - 8 q^{79} - q^{81} - 5 q^{82} - 12 q^{83} - 2 q^{84} - 20 q^{86} + 9 q^{87} - 2 q^{88} - 2 q^{89} - 4 q^{91} - 12 q^{92} + 4 q^{93} + 2 q^{94} + 2 q^{96} - 2 q^{97} + 3 q^{98} + 4 q^{99}+O(q^{100})$$ 2 * q - q^2 - q^3 - q^4 - q^6 - 2 * q^7 + 2 * q^8 - q^9 - 2 * q^11 + 2 * q^12 - 5 * q^13 + 4 * q^14 - q^16 + 5 * q^17 + 2 * q^18 + 2 * q^19 + 4 * q^21 - 2 * q^22 + 6 * q^23 - q^24 + 7 * q^26 + 2 * q^27 - 2 * q^28 + 9 * q^29 - 8 * q^31 - q^32 - 2 * q^33 - 10 * q^34 - q^36 - 11 * q^37 - 4 * q^38 + 7 * q^39 - 5 * q^41 - 2 * q^42 + 10 * q^43 + 4 * q^44 + 6 * q^46 - 4 * q^47 - q^48 + 3 * q^49 - 10 * q^51 - 2 * q^52 + 2 * q^53 - q^54 - 2 * q^56 - 4 * q^57 + 9 * q^58 + 8 * q^59 + 11 * q^61 + 4 * q^62 - 2 * q^63 + 2 * q^64 + 4 * q^66 + 2 * q^67 + 5 * q^68 + 6 * q^69 + 14 * q^71 - q^72 + 26 * q^73 - 11 * q^74 + 2 * q^76 + 8 * q^77 - 2 * q^78 - 8 * q^79 - q^81 - 5 * q^82 - 12 * q^83 - 2 * q^84 - 20 * q^86 + 9 * q^87 - 2 * q^88 - 2 * q^89 - 4 * q^91 - 12 * q^92 + 4 * q^93 + 2 * q^94 + 2 * q^96 - 2 * q^97 + 3 * q^98 + 4 * q^99

## Character values

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

 $$n$$ $$301$$ $$1301$$ $$1327$$ $$\chi(n)$$ $$-\zeta_{6}$$ $$1$$ $$1$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
451.1
 0.5 + 0.866025i 0.5 − 0.866025i
−0.500000 + 0.866025i −0.500000 + 0.866025i −0.500000 0.866025i 0 −0.500000 0.866025i −1.00000 1.73205i 1.00000 −0.500000 0.866025i 0
601.1 −0.500000 0.866025i −0.500000 0.866025i −0.500000 + 0.866025i 0 −0.500000 + 0.866025i −1.00000 + 1.73205i 1.00000 −0.500000 + 0.866025i 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
13.c even 3 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1950.2.i.b 2
5.b even 2 1 78.2.e.b 2
5.c odd 4 2 1950.2.z.b 4
13.c even 3 1 inner 1950.2.i.b 2
15.d odd 2 1 234.2.h.b 2
20.d odd 2 1 624.2.q.b 2
60.h even 2 1 1872.2.t.i 2
65.d even 2 1 1014.2.e.d 2
65.g odd 4 2 1014.2.i.e 4
65.l even 6 1 1014.2.a.e 1
65.l even 6 1 1014.2.e.d 2
65.n even 6 1 78.2.e.b 2
65.n even 6 1 1014.2.a.a 1
65.q odd 12 2 1950.2.z.b 4
65.s odd 12 2 1014.2.b.a 2
65.s odd 12 2 1014.2.i.e 4
195.x odd 6 1 234.2.h.b 2
195.x odd 6 1 3042.2.a.m 1
195.y odd 6 1 3042.2.a.d 1
195.bh even 12 2 3042.2.b.d 2
260.v odd 6 1 624.2.q.b 2
260.v odd 6 1 8112.2.a.x 1
260.w odd 6 1 8112.2.a.bb 1
780.br even 6 1 1872.2.t.i 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
78.2.e.b 2 5.b even 2 1
78.2.e.b 2 65.n even 6 1
234.2.h.b 2 15.d odd 2 1
234.2.h.b 2 195.x odd 6 1
624.2.q.b 2 20.d odd 2 1
624.2.q.b 2 260.v odd 6 1
1014.2.a.a 1 65.n even 6 1
1014.2.a.e 1 65.l even 6 1
1014.2.b.a 2 65.s odd 12 2
1014.2.e.d 2 65.d even 2 1
1014.2.e.d 2 65.l even 6 1
1014.2.i.e 4 65.g odd 4 2
1014.2.i.e 4 65.s odd 12 2
1872.2.t.i 2 60.h even 2 1
1872.2.t.i 2 780.br even 6 1
1950.2.i.b 2 1.a even 1 1 trivial
1950.2.i.b 2 13.c even 3 1 inner
1950.2.z.b 4 5.c odd 4 2
1950.2.z.b 4 65.q odd 12 2
3042.2.a.d 1 195.y odd 6 1
3042.2.a.m 1 195.x odd 6 1
3042.2.b.d 2 195.bh even 12 2
8112.2.a.x 1 260.v odd 6 1
8112.2.a.bb 1 260.w odd 6 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(1950, [\chi])$$:

 $$T_{7}^{2} + 2T_{7} + 4$$ T7^2 + 2*T7 + 4 $$T_{11}^{2} + 2T_{11} + 4$$ T11^2 + 2*T11 + 4 $$T_{17}^{2} - 5T_{17} + 25$$ T17^2 - 5*T17 + 25 $$T_{19}^{2} - 2T_{19} + 4$$ T19^2 - 2*T19 + 4

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2} + T + 1$$
$3$ $$T^{2} + T + 1$$
$5$ $$T^{2}$$
$7$ $$T^{2} + 2T + 4$$
$11$ $$T^{2} + 2T + 4$$
$13$ $$T^{2} + 5T + 13$$
$17$ $$T^{2} - 5T + 25$$
$19$ $$T^{2} - 2T + 4$$
$23$ $$T^{2} - 6T + 36$$
$29$ $$T^{2} - 9T + 81$$
$31$ $$(T + 4)^{2}$$
$37$ $$T^{2} + 11T + 121$$
$41$ $$T^{2} + 5T + 25$$
$43$ $$T^{2} - 10T + 100$$
$47$ $$(T + 2)^{2}$$
$53$ $$(T - 1)^{2}$$
$59$ $$T^{2} - 8T + 64$$
$61$ $$T^{2} - 11T + 121$$
$67$ $$T^{2} - 2T + 4$$
$71$ $$T^{2} - 14T + 196$$
$73$ $$(T - 13)^{2}$$
$79$ $$(T + 4)^{2}$$
$83$ $$(T + 6)^{2}$$
$89$ $$T^{2} + 2T + 4$$
$97$ $$T^{2} + 2T + 4$$