# Properties

 Label 468.2.cb.d Level $468$ Weight $2$ Character orbit 468.cb Analytic conductor $3.737$ Analytic rank $0$ Dimension $4$ CM discriminant -4 Inner twists $4$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [468,2,Mod(19,468)]

mf = mfinit([N,k,chi],0)

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(468, base_ring=CyclotomicField(12))

chi = DirichletCharacter(H, H._module([6, 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("468.19");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$468 = 2^{2} \cdot 3^{2} \cdot 13$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 468.cb (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: $$3.73699881460$$ Analytic rank: $$0$$ Dimension: $$4$$ Coefficient field: $$\Q(\zeta_{12})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{4} - x^{2} + 1$$ x^4 - x^2 + 1 Coefficient ring: $$\Z[a_1, \ldots, a_{13}]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 52) Sato-Tate group: $\mathrm{U}(1)[D_{12}]$

## $q$-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 $$\zeta_{12}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + ( - \zeta_{12}^{3} + \zeta_{12}^{2} + \zeta_{12}) q^{2} + 2 \zeta_{12} q^{4} + (2 \zeta_{12}^{3} + \zeta_{12}^{2} - \zeta_{12} - 2) q^{5} + (2 \zeta_{12}^{3} + 2) q^{8}+O(q^{10})$$ q + (-z^3 + z^2 + z) * q^2 + 2*z * q^4 + (2*z^3 + z^2 - z - 2) * q^5 + (2*z^3 + 2) * q^8 $$q + ( - \zeta_{12}^{3} + \zeta_{12}^{2} + \zeta_{12}) q^{2} + 2 \zeta_{12} q^{4} + (2 \zeta_{12}^{3} + \zeta_{12}^{2} - \zeta_{12} - 2) q^{5} + (2 \zeta_{12}^{3} + 2) q^{8} + (3 \zeta_{12}^{3} + \zeta_{12}^{2} - 3 \zeta_{12} - 2) q^{10} + (3 \zeta_{12}^{3} + 2 \zeta_{12}^{2} - 3 \zeta_{12}) q^{13} + 4 \zeta_{12}^{2} q^{16} + (4 \zeta_{12}^{2} - \zeta_{12} + 4) q^{17} + (2 \zeta_{12}^{3} + 2 \zeta_{12}^{2} - 4 \zeta_{12} - 4) q^{20} + ( - \zeta_{12}^{3} - 6 \zeta_{12}^{2} + 3) q^{25} + (5 \zeta_{12}^{2} - \zeta_{12} - 5) q^{26} + ( - 5 \zeta_{12}^{3} - 2 \zeta_{12}^{2} - 5 \zeta_{12}) q^{29} + (4 \zeta_{12}^{2} + 4 \zeta_{12} - 4) q^{32} + ( - 5 \zeta_{12}^{3} + 8 \zeta_{12}^{2} + 8 \zeta_{12} - 5) q^{34} + ( - \zeta_{12}^{3} - \zeta_{12}^{2} - 6 \zeta_{12} + 7) q^{37} + (2 \zeta_{12}^{3} - 4 \zeta_{12} - 6) q^{40} + (4 \zeta_{12}^{3} - 4 \zeta_{12}^{2} + 5 \zeta_{12} + 9) q^{41} + ( - 7 \zeta_{12}^{3} + 7 \zeta_{12}) q^{49} + ( - 4 \zeta_{12}^{3} - 4 \zeta_{12}^{2} - 2 \zeta_{12} + 6) q^{50} + (4 \zeta_{12}^{3} - 6) q^{52} + ( - 2 \zeta_{12}^{3} + 4 \zeta_{12} - 7) q^{53} + ( - 10 \zeta_{12}^{3} - 7 \zeta_{12}^{2} + 3 \zeta_{12} - 3) q^{58} + ( - 12 \zeta_{12}^{3} - 5 \zeta_{12}^{2} + 6 \zeta_{12} + 5) q^{61} + 8 \zeta_{12}^{3} q^{64} + ( - 4 \zeta_{12}^{3} - 8 \zeta_{12}^{2} - \zeta_{12} + 1) q^{65} + (8 \zeta_{12}^{3} - 2 \zeta_{12}^{2} + 8 \zeta_{12}) q^{68} + (8 \zeta_{12}^{3} - 5 \zeta_{12}^{2} - 5 \zeta_{12} + 8) q^{73} + ( - 14 \zeta_{12}^{3} + 5 \zeta_{12}^{2} + 7 \zeta_{12} - 5) q^{74} + (4 \zeta_{12}^{3} - 4 \zeta_{12}^{2} - 8 \zeta_{12} - 4) q^{80} + (9 \zeta_{12}^{2} + \zeta_{12} + 9) q^{82} + (11 \zeta_{12}^{3} - \zeta_{12}^{2} - 10 \zeta_{12} - 10) q^{85} + (3 \zeta_{12}^{3} + 3 \zeta_{12}^{2} - 3 \zeta_{12}) q^{89} + (5 \zeta_{12}^{2} + 5 \zeta_{12} - 5) q^{97} + ( - 7 \zeta_{12}^{2} + 7 \zeta_{12} + 7) q^{98}+O(q^{100})$$ q + (-z^3 + z^2 + z) * q^2 + 2*z * q^4 + (2*z^3 + z^2 - z - 2) * q^5 + (2*z^3 + 2) * q^8 + (3*z^3 + z^2 - 3*z - 2) * q^10 + (3*z^3 + 2*z^2 - 3*z) * q^13 + 4*z^2 * q^16 + (4*z^2 - z + 4) * q^17 + (2*z^3 + 2*z^2 - 4*z - 4) * q^20 + (-z^3 - 6*z^2 + 3) * q^25 + (5*z^2 - z - 5) * q^26 + (-5*z^3 - 2*z^2 - 5*z) * q^29 + (4*z^2 + 4*z - 4) * q^32 + (-5*z^3 + 8*z^2 + 8*z - 5) * q^34 + (-z^3 - z^2 - 6*z + 7) * q^37 + (2*z^3 - 4*z - 6) * q^40 + (4*z^3 - 4*z^2 + 5*z + 9) * q^41 + (-7*z^3 + 7*z) * q^49 + (-4*z^3 - 4*z^2 - 2*z + 6) * q^50 + (4*z^3 - 6) * q^52 + (-2*z^3 + 4*z - 7) * q^53 + (-10*z^3 - 7*z^2 + 3*z - 3) * q^58 + (-12*z^3 - 5*z^2 + 6*z + 5) * q^61 + 8*z^3 * q^64 + (-4*z^3 - 8*z^2 - z + 1) * q^65 + (8*z^3 - 2*z^2 + 8*z) * q^68 + (8*z^3 - 5*z^2 - 5*z + 8) * q^73 + (-14*z^3 + 5*z^2 + 7*z - 5) * q^74 + (4*z^3 - 4*z^2 - 8*z - 4) * q^80 + (9*z^2 + z + 9) * q^82 + (11*z^3 - z^2 - 10*z - 10) * q^85 + (3*z^3 + 3*z^2 - 3*z) * q^89 + (5*z^2 + 5*z - 5) * q^97 + (-7*z^2 + 7*z + 7) * q^98 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$4 q + 2 q^{2} - 6 q^{5} + 8 q^{8}+O(q^{10})$$ 4 * q + 2 * q^2 - 6 * q^5 + 8 * q^8 $$4 q + 2 q^{2} - 6 q^{5} + 8 q^{8} - 6 q^{10} + 4 q^{13} + 8 q^{16} + 24 q^{17} - 12 q^{20} - 10 q^{26} - 4 q^{29} - 8 q^{32} - 4 q^{34} + 26 q^{37} - 24 q^{40} + 28 q^{41} + 16 q^{50} - 24 q^{52} - 28 q^{53} - 26 q^{58} + 10 q^{61} - 12 q^{65} - 4 q^{68} + 22 q^{73} - 10 q^{74} - 24 q^{80} + 54 q^{82} - 42 q^{85} + 6 q^{89} - 10 q^{97} + 14 q^{98}+O(q^{100})$$ 4 * q + 2 * q^2 - 6 * q^5 + 8 * q^8 - 6 * q^10 + 4 * q^13 + 8 * q^16 + 24 * q^17 - 12 * q^20 - 10 * q^26 - 4 * q^29 - 8 * q^32 - 4 * q^34 + 26 * q^37 - 24 * q^40 + 28 * q^41 + 16 * q^50 - 24 * q^52 - 28 * q^53 - 26 * q^58 + 10 * q^61 - 12 * q^65 - 4 * q^68 + 22 * q^73 - 10 * q^74 - 24 * q^80 + 54 * q^82 - 42 * q^85 + 6 * q^89 - 10 * q^97 + 14 * q^98

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/468\mathbb{Z}\right)^\times$$.

 $$n$$ $$145$$ $$209$$ $$235$$ $$\chi(n)$$ $$\zeta_{12}$$ $$1$$ $$-1$$

## 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   $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
19.1
 −0.866025 + 0.500000i 0.866025 − 0.500000i −0.866025 − 0.500000i 0.866025 + 0.500000i
−0.366025 1.36603i 0 −1.73205 + 1.00000i −0.633975 + 0.633975i 0 0 2.00000 + 2.00000i 0 1.09808 + 0.633975i
163.1 1.36603 0.366025i 0 1.73205 1.00000i −2.36603 2.36603i 0 0 2.00000 2.00000i 0 −4.09808 2.36603i
271.1 −0.366025 + 1.36603i 0 −1.73205 1.00000i −0.633975 0.633975i 0 0 2.00000 2.00000i 0 1.09808 0.633975i
379.1 1.36603 + 0.366025i 0 1.73205 + 1.00000i −2.36603 + 2.36603i 0 0 2.00000 + 2.00000i 0 −4.09808 + 2.36603i
 $$n$$: 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
4.b odd 2 1 CM by $$\Q(\sqrt{-1})$$
13.f odd 12 1 inner
52.l even 12 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 468.2.cb.d 4
3.b odd 2 1 52.2.l.a 4
4.b odd 2 1 CM 468.2.cb.d 4
12.b even 2 1 52.2.l.a 4
13.f odd 12 1 inner 468.2.cb.d 4
24.f even 2 1 832.2.bu.d 4
24.h odd 2 1 832.2.bu.d 4
39.d odd 2 1 676.2.l.d 4
39.f even 4 1 676.2.l.c 4
39.f even 4 1 676.2.l.e 4
39.h odd 6 1 676.2.f.d 4
39.h odd 6 1 676.2.l.e 4
39.i odd 6 1 676.2.f.e 4
39.i odd 6 1 676.2.l.c 4
39.k even 12 1 52.2.l.a 4
39.k even 12 1 676.2.f.d 4
39.k even 12 1 676.2.f.e 4
39.k even 12 1 676.2.l.d 4
52.l even 12 1 inner 468.2.cb.d 4
156.h even 2 1 676.2.l.d 4
156.l odd 4 1 676.2.l.c 4
156.l odd 4 1 676.2.l.e 4
156.p even 6 1 676.2.f.e 4
156.p even 6 1 676.2.l.c 4
156.r even 6 1 676.2.f.d 4
156.r even 6 1 676.2.l.e 4
156.v odd 12 1 52.2.l.a 4
156.v odd 12 1 676.2.f.d 4
156.v odd 12 1 676.2.f.e 4
156.v odd 12 1 676.2.l.d 4
312.bo even 12 1 832.2.bu.d 4
312.bq odd 12 1 832.2.bu.d 4

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
52.2.l.a 4 3.b odd 2 1
52.2.l.a 4 12.b even 2 1
52.2.l.a 4 39.k even 12 1
52.2.l.a 4 156.v odd 12 1
468.2.cb.d 4 1.a even 1 1 trivial
468.2.cb.d 4 4.b odd 2 1 CM
468.2.cb.d 4 13.f odd 12 1 inner
468.2.cb.d 4 52.l even 12 1 inner
676.2.f.d 4 39.h odd 6 1
676.2.f.d 4 39.k even 12 1
676.2.f.d 4 156.r even 6 1
676.2.f.d 4 156.v odd 12 1
676.2.f.e 4 39.i odd 6 1
676.2.f.e 4 39.k even 12 1
676.2.f.e 4 156.p even 6 1
676.2.f.e 4 156.v odd 12 1
676.2.l.c 4 39.f even 4 1
676.2.l.c 4 39.i odd 6 1
676.2.l.c 4 156.l odd 4 1
676.2.l.c 4 156.p even 6 1
676.2.l.d 4 39.d odd 2 1
676.2.l.d 4 39.k even 12 1
676.2.l.d 4 156.h even 2 1
676.2.l.d 4 156.v odd 12 1
676.2.l.e 4 39.f even 4 1
676.2.l.e 4 39.h odd 6 1
676.2.l.e 4 156.l odd 4 1
676.2.l.e 4 156.r even 6 1
832.2.bu.d 4 24.f even 2 1
832.2.bu.d 4 24.h odd 2 1
832.2.bu.d 4 312.bo even 12 1
832.2.bu.d 4 312.bq odd 12 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(468, [\chi])$$:

 $$T_{5}^{4} + 6T_{5}^{3} + 18T_{5}^{2} + 18T_{5} + 9$$ T5^4 + 6*T5^3 + 18*T5^2 + 18*T5 + 9 $$T_{7}$$ T7 $$T_{17}^{4} - 24T_{17}^{3} + 239T_{17}^{2} - 1128T_{17} + 2209$$ T17^4 - 24*T17^3 + 239*T17^2 - 1128*T17 + 2209

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{4} - 2 T^{3} + 2 T^{2} - 4 T + 4$$
$3$ $$T^{4}$$
$5$ $$T^{4} + 6 T^{3} + 18 T^{2} + 18 T + 9$$
$7$ $$T^{4}$$
$11$ $$T^{4}$$
$13$ $$T^{4} - 4 T^{3} + 3 T^{2} - 52 T + 169$$
$17$ $$T^{4} - 24 T^{3} + 239 T^{2} + \cdots + 2209$$
$19$ $$T^{4}$$
$23$ $$T^{4}$$
$29$ $$T^{4} + 4 T^{3} + 87 T^{2} + \cdots + 5041$$
$31$ $$T^{4}$$
$37$ $$T^{4} - 26 T^{3} + 233 T^{2} + \cdots + 3721$$
$41$ $$T^{4} - 28 T^{3} + 365 T^{2} + \cdots + 14641$$
$43$ $$T^{4}$$
$47$ $$T^{4}$$
$53$ $$(T^{2} + 14 T + 37)^{2}$$
$59$ $$T^{4}$$
$61$ $$T^{4} - 10 T^{3} + 183 T^{2} + \cdots + 6889$$
$67$ $$T^{4}$$
$71$ $$T^{4}$$
$73$ $$T^{4} - 22 T^{3} + 242 T^{2} + \cdots + 529$$
$79$ $$T^{4}$$
$83$ $$T^{4}$$
$89$ $$T^{4} - 6 T^{3} + 18 T^{2} - 108 T + 324$$
$97$ $$T^{4} + 10 T^{3} + 50 T^{2} + \cdots + 2500$$