# Properties

 Label 2888.1.u.c Level $2888$ Weight $1$ Character orbit 2888.u Analytic conductor $1.441$ Analytic rank $0$ Dimension $6$ Projective image $D_{3}$ CM discriminant -8 Inner twists $12$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [2888,1,Mod(99,2888)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2888, base_ring=CyclotomicField(18))

chi = DirichletCharacter(H, H._module([9, 9, 2]))

N = Newforms(chi, 1, names="a")

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

chi := DirichletCharacter("2888.99");

S:= CuspForms(chi, 1);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$2888 = 2^{3} \cdot 19^{2}$$ Weight: $$k$$ $$=$$ $$1$$ Character orbit: $$[\chi]$$ $$=$$ 2888.u (of order $$18$$, degree $$6$$, not 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: $$1.44129975648$$ Analytic rank: $$0$$ Dimension: $$6$$ Coefficient field: $$\Q(\zeta_{18})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{6} - x^{3} + 1$$ x^6 - x^3 + 1 Coefficient ring: $$\Z[a_1, a_2]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 152) Projective image: $$D_{3}$$ Projective field: Galois closure of 3.1.2888.1 Artin image: $S_3\times C_9$ Artin field: Galois closure of $$\mathbb{Q}[x]/(x^{54} - \cdots)$$

## $q$-expansion

comment: q-expansion

sage: f.q_expansion() # note that sage often uses an isomorphic number field

gp: mfcoefs(f, 20)

The $$q$$-expansion and trace form are shown below.

 $$f(q)$$ $$=$$ $$q - \zeta_{18}^{5} q^{2} - \zeta_{18}^{2} q^{3} - \zeta_{18} q^{4} + \zeta_{18}^{7} q^{6} + \zeta_{18}^{6} q^{8} +O(q^{10})$$ q - z^5 * q^2 - z^2 * q^3 - z * q^4 + z^7 * q^6 + z^6 * q^8 $$q - \zeta_{18}^{5} q^{2} - \zeta_{18}^{2} q^{3} - \zeta_{18} q^{4} + \zeta_{18}^{7} q^{6} + \zeta_{18}^{6} q^{8} - \zeta_{18}^{6} q^{11} + \zeta_{18}^{3} q^{12} + \zeta_{18}^{2} q^{16} - \zeta_{18}^{5} q^{17} - \zeta_{18}^{2} q^{22} - \zeta_{18}^{8} q^{24} - \zeta_{18}^{7} q^{25} + \zeta_{18}^{6} q^{27} - \zeta_{18}^{7} q^{32} + \zeta_{18}^{8} q^{33} - 2 \zeta_{18} q^{34} - \zeta_{18}^{2} q^{41} + \zeta_{18}^{8} q^{43} + \zeta_{18}^{7} q^{44} - \zeta_{18}^{4} q^{48} + \zeta_{18}^{6} q^{49} - \zeta_{18}^{3} q^{50} + 2 \zeta_{18}^{7} q^{51} + \zeta_{18}^{2} q^{54} + \zeta_{18}^{5} q^{59} - \zeta_{18}^{3} q^{64} + \zeta_{18}^{4} q^{66} - \zeta_{18}^{4} q^{67} + 2 \zeta_{18}^{6} q^{68} - \zeta_{18}^{2} q^{73} - q^{75} - \zeta_{18}^{8} q^{81} + \zeta_{18}^{7} q^{82} + \zeta_{18}^{3} q^{83} + 2 \zeta_{18}^{4} q^{86} + \zeta_{18}^{3} q^{88} - \zeta_{18}^{7} q^{89} - q^{96} + \zeta_{18}^{5} q^{97} + \zeta_{18}^{2} q^{98} +O(q^{100})$$ q - z^5 * q^2 - z^2 * q^3 - z * q^4 + z^7 * q^6 + z^6 * q^8 - z^6 * q^11 + z^3 * q^12 + z^2 * q^16 - z^5 * q^17 - z^2 * q^22 - z^8 * q^24 - z^7 * q^25 + z^6 * q^27 - z^7 * q^32 + z^8 * q^33 - 2*z * q^34 - z^2 * q^41 + z^8 * q^43 + z^7 * q^44 - z^4 * q^48 + z^6 * q^49 - z^3 * q^50 + 2*z^7 * q^51 + z^2 * q^54 + z^5 * q^59 - z^3 * q^64 + z^4 * q^66 - z^4 * q^67 + 2*z^6 * q^68 - z^2 * q^73 - q^75 - z^8 * q^81 + z^7 * q^82 + z^3 * q^83 + 2*z^4 * q^86 + z^3 * q^88 - z^7 * q^89 - q^96 + z^5 * q^97 + z^2 * q^98 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$6 q - 3 q^{8}+O(q^{10})$$ 6 * q - 3 * q^8 $$6 q - 3 q^{8} + 3 q^{11} + 3 q^{12} - 3 q^{27} - 3 q^{49} - 3 q^{50} - 3 q^{64} - 6 q^{68} - 6 q^{75} + 3 q^{83} + 3 q^{88} - 6 q^{96}+O(q^{100})$$ 6 * q - 3 * q^8 + 3 * q^11 + 3 * q^12 - 3 * q^27 - 3 * q^49 - 3 * q^50 - 3 * q^64 - 6 * q^68 - 6 * q^75 + 3 * q^83 + 3 * q^88 - 6 * q^96

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/2888\mathbb{Z}\right)^\times$$.

 $$n$$ $$1445$$ $$2167$$ $$2529$$ $$\chi(n)$$ $$-1$$ $$-1$$ $$-\zeta_{18}$$

## 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   $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
99.1
 −0.766044 − 0.642788i −0.173648 + 0.984808i −0.173648 − 0.984808i −0.766044 + 0.642788i 0.939693 + 0.342020i 0.939693 − 0.342020i
−0.939693 0.342020i −0.173648 0.984808i 0.766044 + 0.642788i 0 −0.173648 + 0.984808i 0 −0.500000 0.866025i 0 0
595.1 0.766044 0.642788i 0.939693 + 0.342020i 0.173648 0.984808i 0 0.939693 0.342020i 0 −0.500000 0.866025i 0 0
1859.1 0.766044 + 0.642788i 0.939693 0.342020i 0.173648 + 0.984808i 0 0.939693 + 0.342020i 0 −0.500000 + 0.866025i 0 0
1867.1 −0.939693 + 0.342020i −0.173648 + 0.984808i 0.766044 0.642788i 0 −0.173648 0.984808i 0 −0.500000 + 0.866025i 0 0
2411.1 0.173648 0.984808i −0.766044 0.642788i −0.939693 0.342020i 0 −0.766044 + 0.642788i 0 −0.500000 + 0.866025i 0 0
2555.1 0.173648 + 0.984808i −0.766044 + 0.642788i −0.939693 + 0.342020i 0 −0.766044 0.642788i 0 −0.500000 0.866025i 0 0
 $$n$$: e.g. 2-40 or 990-1000 Embeddings: e.g. 1-3 or 99.1 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
8.d odd 2 1 CM by $$\Q(\sqrt{-2})$$
19.c even 3 2 inner
19.e even 9 3 inner
152.k odd 6 2 inner
152.u odd 18 3 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2888.1.u.c 6
8.d odd 2 1 CM 2888.1.u.c 6
19.b odd 2 1 2888.1.u.d 6
19.c even 3 2 inner 2888.1.u.c 6
19.d odd 6 2 2888.1.u.d 6
19.e even 9 2 152.1.k.a 2
19.e even 9 1 2888.1.f.b 1
19.e even 9 3 inner 2888.1.u.c 6
19.f odd 18 1 2888.1.f.a 1
19.f odd 18 2 2888.1.k.a 2
19.f odd 18 3 2888.1.u.d 6
57.l odd 18 2 1368.1.bz.a 2
76.l odd 18 2 608.1.o.a 2
95.p even 18 2 3800.1.bd.c 2
95.q odd 36 4 3800.1.bn.b 4
152.b even 2 1 2888.1.u.d 6
152.k odd 6 2 inner 2888.1.u.c 6
152.o even 6 2 2888.1.u.d 6
152.t even 18 2 608.1.o.a 2
152.u odd 18 2 152.1.k.a 2
152.u odd 18 1 2888.1.f.b 1
152.u odd 18 3 inner 2888.1.u.c 6
152.v even 18 1 2888.1.f.a 1
152.v even 18 2 2888.1.k.a 2
152.v even 18 3 2888.1.u.d 6
456.bu even 18 2 1368.1.bz.a 2
760.bz odd 18 2 3800.1.bd.c 2
760.cp even 36 4 3800.1.bn.b 4

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
152.1.k.a 2 19.e even 9 2
152.1.k.a 2 152.u odd 18 2
608.1.o.a 2 76.l odd 18 2
608.1.o.a 2 152.t even 18 2
1368.1.bz.a 2 57.l odd 18 2
1368.1.bz.a 2 456.bu even 18 2
2888.1.f.a 1 19.f odd 18 1
2888.1.f.a 1 152.v even 18 1
2888.1.f.b 1 19.e even 9 1
2888.1.f.b 1 152.u odd 18 1
2888.1.k.a 2 19.f odd 18 2
2888.1.k.a 2 152.v even 18 2
2888.1.u.c 6 1.a even 1 1 trivial
2888.1.u.c 6 8.d odd 2 1 CM
2888.1.u.c 6 19.c even 3 2 inner
2888.1.u.c 6 19.e even 9 3 inner
2888.1.u.c 6 152.k odd 6 2 inner
2888.1.u.c 6 152.u odd 18 3 inner
2888.1.u.d 6 19.b odd 2 1
2888.1.u.d 6 19.d odd 6 2
2888.1.u.d 6 19.f odd 18 3
2888.1.u.d 6 152.b even 2 1
2888.1.u.d 6 152.o even 6 2
2888.1.u.d 6 152.v even 18 3
3800.1.bd.c 2 95.p even 18 2
3800.1.bd.c 2 760.bz odd 18 2
3800.1.bn.b 4 95.q odd 36 4
3800.1.bn.b 4 760.cp even 36 4

## Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator $$T_{3}^{6} - T_{3}^{3} + 1$$ acting on $$S_{1}^{\mathrm{new}}(2888, [\chi])$$.

## Hecke characteristic polynomials

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